ACCULINK
3162 DSU/CSU
USER’S GUIDE
Document No. 3162-A2-GB20-40
August 2000
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Important Information
!
Important Safety Instructions
1. Read and follow all warning notices and instructions marked on the product or included in the manual.
2. This product is intended to be used with a 3-wire grounding type plug – a plug which has a grounding pin. This is
a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the
grounding type plug by modifying the plug or using an adapter.
Prior to installation, use an outlet tester or a voltmeter to check the ac receptacle for the presence of earth
ground. If the receptacle is not properly grounded, the installation must not continue until a qualified electrician
has corrected the problem.
If a 3-wire grounding type power source is not available, consult a qualified electrician to determine another
method of grounding the equipment.
3. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product and to
protect it from overheating, these slots and openings must not be blocked or covered.
4. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the
power cord.
5. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous
high voltage points or other risks. Refer all servicing to qualified service personnel.
6. General purpose cables are provided with this product. Special cables, which may be required by the regulatory
inspection authority for the installation site, are the responsibility of the customer.
7. When installed in the final configuration, the product must comply with the applicable Safety Standards and
regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory
agencies and inspection authorities to ensure compliance.
8. A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If
products installed in separate buildings are interconnected, the voltage potential may cause a hazardous
condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists and, if
necessary, implement corrective action prior to interconnecting the products.
9. Input power to the ac voltage configuration of this product must be provided by a UL-listed or CSA-certified power
source with a Class 2 or Limited Power Source (LPS) output.
10. This product contains a coin cell lithium battery that is only to be replaced at the factory. Caution: There is a
danger of explosion if the battery is incorrectly replaced. Replace only with the same type. Dispose of used
batteries according to the battery manufacturer’s instructions. Attention: Il y a danger d’explosion s’il y a
remplacement incorrect de la batterie. Remplacer uniquement avec une batterie du même type. Mettre au rebut
les batteries usagées conformément aux instructions du fabricant.
11. In addition, if the equipment is to be used with telecommunications circuits, take the following precautions:
— Never install telephone wiring during a lightning storm.
— Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
— Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the
network interface.
— Use caution when installing or modifying telephone lines.
— Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of
electric shock from lightning.
— Do not use the telephone to report a gas leak in the vicinity of the leak.
3162-A2-GB20-40
August 2000
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Important Information
!
UNITED STATES – EMI NOTICE:
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
The authority to operate this equipment is conditioned by the requirements that no modifications will be
made to the equipment unless the changes or modifications are expressly approved by Paradyne
Corporation.
!
CANADA – EMI NOTICE:
This Class A digital apparatus meets all requirements of the Canadian interference-causing equipment
regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du règlement sur le matérial
brouilleur du Canada.
August 2000
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Important Information
Government Requirements and Equipment Return
Certain governments require that instructions pertaining to CSU connection to the telephone network be included in
the installation and operation manual. Specific instructions are listed in the following sections.
United States
NOTICE TO USERS OF THE UNITED STATES TELEPHONE NETWORK
1. This equipment complies with Part 68 of the FCC rules. On the bottom of the DSU/CSU is a label that contains,
among other information, the FCC registration number. If requested, this information must be provided to the
telephone company.
2. The T1 network connection should be made using a Universal Service Order Code (USOC) type RJ48C jack. The
Service Order Code 6.0F should be specified to the telephone company when ordering the T1 line. In addition,
the proper Facility Interface Code must be specified to the telephone company. The DSU/CSU can be configured
to support any of the following framing format and line signaling techniques. The DSU/CSU configuration must
correspond to the T1 line’s parameters.
DSU/CSU Facility Interface Codes
Code
Description
04DU9-BN
04DU9-DN
04DU9-1KN
04DU-1SN
1.544 Mbps superframe format (SF) without line power
1.544 Mbps SF and B8ZS without line power
1.544 Mbps ANSI ESF without line power
1.544 Mbps ANSI ESF and B8ZS without line power
3. An FCC compliant telephone cord and modular plug is provided with this equipment. This equipment is designed
to be connected to the telephone network or premises wiring using a compatible modular jack which is Part 68
compliant. See the installation instructions for details.
4. If the DSU/CSU causes harm to the telephone network, the telephone company will notify you in advance that
temporary discontinuance of service may be required. But if advance notice is not practical, the telephone
company will notify the customer as soon as possible. Also, you will be advised of your right to file a complaint
with the FCC if you believe it is necessary.
5. The telephone company may make changes in its facilities, equipment, operations, or procedures that could affect
the operation of the equipment. If this happens, the telephone company will provide advance notice in order for
you to make the necessary modifications in order to maintain uninterrupted service.
6. If you experience trouble with this equipment, please contact your sales or service representative (as appropriate)
for repair or warranty information. If the product needs to be returned to the company service center for repair,
contact them directly for return instructions using one of the following methods:
H Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com
H Telephone: Call our automated call system to receive current information or to speak with a company
representative.
— Within the U.S.A., call 1-800-870-2221
— Outside the U.S.A., call 727-530-2340
If the trouble is causing harm to the telephone network, the telephone company may request that you remove the
equipment from the network until the problem is resolved.
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Important Information
7. If your DSU/CSU is in need of repair, refer to the Warranty, Sales and Service Information section on page A.
8. No repairs may be made by the customer.
Canada
NOTICE TO USERS OF THE CANADIAN TELEPHONE NETWORK
The Industry Canada label identifies certified equipment. This certification means that the equipment meets
telecommunications network protective, operational, and safety requirements as prescribed in the appropriate
Terminal Equipment Technical Requirements document(s). The Department does not guarantee the equipment will
operate to the user’s satisfaction.
Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local
telecommunications company. The equipment must also be installed using an acceptable method of connection. The
customer should be aware that compliance with the above conditions may not prevent degradation of service in some
situations.
Repairs to certified equipment should be coordinated by a representative designated by the supplier. Any repairs or
alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications
company cause to request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical ground connections of the power utility, telephone
lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly
important in rural areas.
CAUTION:
Users should not attempt to make such connections themselves, but should contact the appropriate
electric inspection authority, or electrician, as appropriate.
The Ringer Equivalence Number (REN) assigned to each terminal device provides an indication of the maximum
number of terminals allowed to be connected to a telephone interface. The termination on an interface may consist of
any combination of devices subject only to the requirement that the sum of the Ringer Equivalence Numbers of all the
devices does not exceed 5.
If your equipment is in need of repair, refer to the procedure on page A of this document.
August 2000
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Contents
About This Guide
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Document Purpose and Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . vii
Document Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Product-Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
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Introduction
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
DTE Drop/Insert (DSX-1) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Asynchronous Terminal Interface Support . . . . . . . . . . . . . . . . . . . . . . 1-2
Alarm Message Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Telnet Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
SNMP Management Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
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Installation
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Application Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
SNMP or Telnet Connection Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Important Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Cabling Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Power-On Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
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Contents
3
Operation
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Front Panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Initiating an Asynchronous Terminal Session . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Ending an Asynchronous Terminal Session . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Recovering Asynchronous Terminal Operation . . . . . . . . . . . . . . . . . . . . . . 3-6
Menu Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Using Asynchronous Terminal Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Entering a Password to Gain Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Displaying LED Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Changing Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Displaying or Editing Configuration Options . . . . . . . . . . . . . . . . . . . . . 3-13
Saving Edit Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
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Configuration
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Setting Customer Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Configuring the 10BaseT Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Configuring the COM Port for SNMP or Telnet Access . . . . . . . . . . . . . . . 4-4
Configuring the COM Port for Management . . . . . . . . . . . . . . . . . . . . . 4-5
Setting the IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Selecting the Link Layer Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Configuring DS0 Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Displaying DS0 Channel Assignments . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
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Allocating DS0 Channels from the DTE Drop/Insert Interface to the
Network Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Configuring DS0 Channels for Robbed Bit Signaling . . . . . . . . . . . . . 4-15
Allocating Data Ports Using the Block or ACAMI Assignment
Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Allocating Data Ports Using the Individual Channel Assignment
Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Clearing DS0 Channel Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Establishing Access Security on the COM Port . . . . . . . . . . . . . . . . . . . . . . 4-18
Setting a Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Selecting the Timing Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Providing Backup Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
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Contents
5
Monitoring and Testing
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Self-Test Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Device Health and Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Performance Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Ethernet Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
IP Routing Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
SNMP Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Test Jacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
Test Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
Remote Loopback Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Sending a Line Loopback Up or Down . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Sending a V.54 or ANSI FT1 Activation/Deactivation Sequence . . . . 5-20
Local Loopback Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
Starting a Line Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
Starting a Payload Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Starting a DTE Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Starting a Repeater Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
Starting a Data Channel Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Starting a Data Terminal Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
Aborting Loopbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
Test Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Sending Network QRSS or Network 1-in-8 Test Patterns . . . . . . . . . . 5-26
Sending Port QRSS or Port 511 Test Patterns . . . . . . . . . . . . . . . . . . . 5-27
Monitoring Network QRSS Test Patterns . . . . . . . . . . . . . . . . . . . . . . . 5-27
Monitoring Port QRSS or Port 511 Test Patterns . . . . . . . . . . . . . . . . . 5-27
Aborting Test Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
Lamp Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
Starting a Lamp Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
Aborting a Lamp Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
Displaying DSU/CSU Test Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
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A Asynchronous Terminal Menu
B Technical Specifications
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
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Contents
C Configuration Options
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Network Interface Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
DTE Interface Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
Sync Data Port Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
Cross Connect Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-11
DTE-to-Network Assignment Options . . . . . . . . . . . . . . . . . . . . . . . . . . C-11
Sync Data Port Assignment Options . . . . . . . . . . . . . . . . . . . . . . . . . . . C-12
General Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-15
User Interface Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-17
Communication Port Configuration Options . . . . . . . . . . . . . . . . . . . . . C-17
External Device Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . C-19
Telnet Sessions Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . C-22
Ethernet (10BaseT) Port Configuration Options . . . . . . . . . . . . . . . . . . C-23
Alarm and Trap Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-24
Management and Communication Configuration Options . . . . . . . . . . . . . C-26
Communication Protocol Configuration Options . . . . . . . . . . . . . . . . . C-26
General SNMP Management Configuration Options . . . . . . . . . . . . . . C-28
SNMP NMS Security Configuration Options . . . . . . . . . . . . . . . . . . . . . C-29
SNMP Traps Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-30
Configuration Worksheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-33
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
T1 Network Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
DTE Drop/Insert Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3
10BaseT Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4
COM Port Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-5
Serial Crossover Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-7
EIA-530-A Port Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-8
EIA-530-A-to-RS-449 Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-9
EIA-530-A-to-V.35 Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-11
EIA-530-A-to-X.21 Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-13
External Clock Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-14
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Contents
E SNMP MIB Objects
H
H
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
MIB II (RFC 1213) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
System Group, MIB II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2
Interface Group, MIB II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3
IP Group, MIB II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-7
ICMP Group, MIB II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-10
TCP Group, MIB II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-10
UDP Group, MIB II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-10
Transmission Group, MIB II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-11
SNMP Group, MIB II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-11
DS1/E1 MIB (RFC 1406) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-11
Near End Group, DS1/E1 MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-12
Far End Group, DS1/E1 MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-16
DS1 Fractional Group, DS1/E1 MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-16
RS-232-like MIB (RFC 1317) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-17
General Port Table, RS-232-like MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . E-17
Asynchronous Port Table, RS-232-like MIB . . . . . . . . . . . . . . . . . . . . . E-19
Synchronous Port Table, RS-232-like MIB . . . . . . . . . . . . . . . . . . . . . . E-20
Input Signal Table, RS-232-like MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-20
Output Signal Table, RS-232-like MIB . . . . . . . . . . . . . . . . . . . . . . . . . . E-21
Generic-Interface MIB Extensions (RFC 1229) . . . . . . . . . . . . . . . . . . . . . . E-21
Generic Interface Test Table, Generic Interface MIB . . . . . . . . . . . . . . E-22
Enterprise MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-24
H
H
H
H
F IP Network Addressing Scenario
H
H
H
H
H
H
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1
Standalone at the Central Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2
Local Carrier with Remote Standalone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3
Local and Remote Carriers — Different Subnets . . . . . . . . . . . . . . . . . . . . F-4
Local and Remote Carriers — Same Subnet . . . . . . . . . . . . . . . . . . . . . . . . F-5
Multiple NMSs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-6
G Equipment List
Glossary
Index
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Contents
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About This Guide
Document Purpose and Intended Audience
This user’s guide contains installation, operation, and maintenance information
for the ACCULINK 3162 Data Service Unit (DSU)/Channel Service Unit (CSU).
It is assumed that you are familiar with the operation of digital data
communication equipment. You should also be familiar with Simple Network
Management Protocol (SNMP) if you want your DSU/CSU to be managed by an
SNMP manager.
Document Summary
Section
Description
Chapter 1
Chapter 2
Chapter 3
Introduction. Describes the 3162 DSU/CSU and its
features.
Installation. Describes how to install the DSU/CSU and
make connections.
Operation. Provides information about the front panel
LEDs, and instructions for using an asynchronous
terminal to control and configure the DSU/CSU.
Chapter 4
Configuration. Contains procedures for configuring the
Ethernet port, the COM port, DS0 channels, and
access security.
Chapter 5
Monitoring and Testing. Contains procedures for
monitoring, testing, and troubleshooting.
Appendix A
Appendix B
Appendix C
Appendix D
Asynchronous Terminal Menu. Contains a menu tree
showing all the main front panel functions.
Technical Specifications. Contains technical
specifications for the 3162 DSU/CSU.
Configuration Options. Contains all the configuration
options and default settings.
Pin Assignments. Shows the pin assignments for
connectors and cables.
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About This Guide
Section
Description
Appendix E
SNMP MIB Objects. Describes the MIB objects
supported by the DSU/CSU.
Appendix F
Appendix G
Glossary
Index
IP Network Addressing Scenario. Provides sample IP
addressing scheme.
Equipment List. Contains order numbers for cables and
other related parts.
Defines abbreviations and terms used in this
document.
Lists key terms, concepts, and sections in alphabetical
order.
Product-Related Documents
Document Number
Document Title
3160-A2-GB24
ACCULINK DSU/CSU, Models 3160-A4, 3161,
3164-A2, and 3165-A4, Operator’s Guide
3162-A2-GL11
ACCULINK 3162 DSU/CSU Quick Reference
Contact your sales or service representative to order additional product
documentation.
Paradyne documents are also available on the World Wide Web at:
www.paradyne.com
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About This Guide
Reference Documents
AT&T Technical Reference 54016
AT&T Technical Reference 62411
ANSI T1.403-1989
Industry Canada CS-03
CSA-22.2 No. 950
Industry Canada (ICES)-003
FCC Part 15
FCC Part 68
UL 1950
Management Information Base for Network Management of TCP/IP- Based
Internets: MIBII. RFC 1213, March 1991
Definitions of Managed Objects for the DS1 and E1 Interface Types. RFC 1406,
January 1993
Definitions of Managed Objects for RS-232-like Hardware Devices. RFC 1317,
April 1992
Extensions to the Generic-Interface MIB. RFC 1229, May 1991
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Introduction
1
Overview
The ACCULINKr DSU/CSU acts as an interface between the T1 digital network
and the customer premises equipment, converting signals received from the DTE
(Data Terminal Equipment) to bipolar signals that can be transmitted over T1
lines. Typical applications include shared access to network-based services,
Local Area Network (LAN)/Wide Area Network (WAN) interconnection, and
fractional T1 network applications.
In addition to the T1 network interface and the DTE Drop/Insert (DSX-1)
interface, the Model 3162 provides two synchronous data ports.
Features
The DSU/CSU optimizes network performance with a wide range of features such
as the following:
H
H
H
H
H
H
H
Local or remote configuration and operation flexibility.
Several loopback capabilities and test pattern generators.
DTE Drop/Insert (DSX-1) capability.
Asynchronous terminal interface support.
Alarm message display/print capability.
Telnet access for remote asynchronous terminal operations.
Network management provided through industry-standard Simple Network
Management Protocol (SNMP).
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Introduction
DTE Drop/Insert (DSX-1) Interface
The DTE Drop/Insert interface allows DTEs/PBXs that support the DS1 signal
format to share the T1 network with other high-speed equipment.
Asynchronous Terminal Interface Support
The DSU/CSU can be configured and managed from an asynchronous (async)
terminal. The asynchronous terminal’s full screen display uses a menu hierarchy
to perform device-control operations.
Chapter 3, Operation, provides operational examples to help you become familiar
with the use of the asynchronous terminal for DSU/CSU control.
Alarm Message Capability
The DSU/CSU can be attached, either locally or remotely, to an ASCII terminal or
printer to display or print alarm messages. Alarms can also be displayed on a PC
that is using a terminal emulation package.
Chapter 5, Monitoring and Testing, provides a list of alarm messages.
Telnet Access
Remote async terminal operations can be performed using Telnet access. Telnet
is a Transmission Control Protocol/Internet Protocol (TCP/IP) service that
supports a virtual terminal interface.
SNMP Management Support
SNMP is a network management protocol that is used to monitor network
performance and status, and to report alarms (i.e., traps). To function, SNMP
requires a manager consisting of a software program housed within a workstation
or PC; an agent consisting of a software program housed within a device (e.g.,
the DSU/CSU); and a Management Information Base (MIB) consisting of a
database of managed objects. The DSU/CSU can be managed by any
industry-standard SNMP manager.
Two link layer protocols, Point-to-Point Protocol (PPP) and Serial Line Internet
Protocol (SLIP), are supported for connection to an external SNMP manager or
network device (e.g., a router).
The SNMP manager or network device can be directly connected to the
communications (COM) port or can be accessed via Ethernet using the 10BaseT
port.
The SNMP management system can communicate to the DSU/CSU remotely
through the Facility Data Link (FDL) or the synchronous data port’s Embedded
Data Link (EDL).
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Introduction
Physical Description
The DSU/CSU front panel (Figure 1-1) contains twelve light-emitting diodes
(LEDs) and six test jacks.
The LEDs are described in Front Panel LEDs in Chapter 3, Operation.
The test jacks are described in Test Jacks in Chapter 5, Monitoring and Testing.
The DSU/CSU rear panel (Figure 1-2) contains the connectors required for the
operation of the DSU/CSU. The connectors and their functions are listed in
Table 1-1.
ACCULINK
MON EQPT
NET
In
In
In
OK FAIL TEST SIG OOF ALRM EER SIG OOF ALRM PDV BPV
NETWORK DTR TXD RXD CTS RTS
3162
Out
Out
Out
496-15001
Figure 1-1. 3162 DSU/CSU Front Panel
10 BASE-T
PORT 2
EXT CLK
POWER
PORT 1
COM
MODEM
DSX-1
NETWORK
00-16852
Figure 1-2. 3162 DSU/CSU Rear Panel
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Introduction
Table 1-1. DSU/CSU Rear Panel Connectors
Name
Function
POWER
Supplies power to the DSU/CSU by providing an attachment for the
AC power module.
Supports connection to an Ethernet LAN.
10 BASE-T PORT
COM PORT
Provides access to a locally connected PC, ASCII terminal or
printer, SNMP management link, or asynchronous terminal
interface.
NETWORK
DTE
Provides access to the T1 network.
Provides access to the DTE Drop/Insert (DSX-1) interface.
Used to attach an external clock to the DSU/CSU.
CLOCK IN
PORTs 1–2
Used to connect the customer’s synchronous data DTE to the
DSU/CSU.
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Installation
2
Overview
This chapter contains information for installing your DSU/CSU. It includes
application examples, cabling, and power-on information.
Application Examples
The DSU/CSU acts as an interface between the T1 digital network and the
customer’s equipment.
The DSU/CSU is connected to the customer’s equipment through one of the
synchronous data ports (PORTs 1– 2) or the DTE Drop/Insert (DSX-1) interface. It
is connected to the T1 digital network through the network interface.
Some common applications for the DSU/CSU are:
H
H
H
Point-to-Point LAN interconnection (Figure 2-1).
Shared access to network-based services (Figure 2-2).
Fractional T1 network applications (Figure 2-3).
LAN
ROUTER
LAN
ROUTER
NETWORK
DSU/CSU
DSU/CSU
496-15218
Figure 2-1. Point-to-Point Application Example
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Installation
PBX
NETWORK
SERVICES
DSU/CSU
LAN
ROUTER
496-15219
Figure 2-2. Shared Access Application Example
LAN
ROUTER
LAN
ROUTER
DSU/CSU
FRACTIONAL
NETWORK
DSU/CSU
LAN
ROUTER
LAN
ROUTER
DSU/CSU
496-15220
Figure 2-3. Fractional T1 Application Example
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Installation
SNMP or Telnet Connection Examples
The DSU/CSU can be connected to an SNMP or Telnet system in a number of
ways. Some examples include:
H
H
H
H
Directly connecting the COM port to the SNMP or Telnet device (Figure 2-4).
Connecting the COM port to a network device (e.g., a router) (Figure 2-5).
Connecting to an Ethernet LAN through the 10BaseT port (Figure 2-6).
Remotely accessing the DSU/CSU through the Facility Data Link (FDL) or the
synchronous data port’s Embedded Data Link (EDL) (Figure 2-7).
ETHERNET
DSU/CSU
LAN
ROUTER
NETWORK
PPP/SLIP
496-15221
Figure 2-4. Direct Connection
ETHERNET
DSU/CSU
LAN
ROUTER
NETWORK
PPP/SLIP
496-15222
Figure 2-5. Connection through a Router
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Installation
LAN
ROUTER
DSU/CSU
ETHERNET
NETWORK
99-15008-02
Figure 2-6. Connection through the 10BaseT Port
DSU/CSU
DSU/CSU
ETHERNET
LAN
ROUTER
NETWORK
FDL/EDL
PPP
LAN
ADAPTER
496-15225
Figure 2-7. Remote Access through FDL/EDL
Important Instructions
Read and follow all warning notices and instructions marked on the DSU/CSU or
included in this guide.
For a complete listing of the safety instructions, see the Important Safety
Instructions at the beginning of this guide.
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Installation
Cabling Example
The DSU/CSU is supplied with an AC power module, a T1 network cable, and a
COM port cable.
Optional cables are described in Appendix D, Pin Assignments.
Figure 2-8 illustrates typical cabling.
COM
PORT
10BaseT
PORT
NETWORK
PORT
10Base-T
3162
DSU/CSU
PORT
PORT
2
1
EXT CLK
DSX-1
POWER
COM
MODEM
NET
3162 DSU/CSU
T1 NETWORK
POWER
NETWORK
PORT
SERIAL
PORT
10BaseT
SNMP
MANAGER
00-16826
Figure 2-8. Cabling Example
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Installation
Power-On Self-Test
After you connect the DSU/CSU to a power source, the unit performs the
power-on self-test to ensure that it is in good working order. The DSU/CSU
performs this test on itself upon power-on or after a device reset, unless it has
been disabled by the Self-Test configuration option (see Appendix C,
Configuration Options).
The self-test includes a basic processor test, a limited memory test, a code
checksum test, and basic verification tests of the internal components.
" Procedure
The power-on self-test consists of the following steps:
1. Once the DSU/CSU is plugged in, the Fail LED blinks ON and Off
continuously.
2. All the LEDs then start to flash simultaneously in the pattern twice ON, then
Off.
3. If the self-test is successful, the Fail LED turns Off and the OK LED lights.
If the self-test fails, the Fail LED lights. The DSU/CSU continues to try to
operate. If you are in doubt about the results of the self-test, use the System
and Test Status screen to display the results of this test (see Self-Test
Results in Chapter 5, Monitoring and Testing).
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Operation
3
Overview
This chapter contains information for operating your DSU/CSU. It includes a
description of the front panel LEDs and sample procedures to help you become
familiar with the use of the asynchronous terminal for DSU/CSU control.
Front Panel LEDs
There are twelve LEDs on the DSU/CSU front panel. The five LEDs on the right
(Figure 3-1) are shared between the DTE Drop/Insert (DSX-1) interface and the
data ports. Use the Control branch of the asynchronous terminal menu tree to
choose which port’s status the LEDs display (see Menu Organization on
page 3-7).
Figure 3-1. DSU/CSU LEDs
A green LED indicates normal operation. A yellow LED indicates a warning (for
the DTE Drop/Insert interface) or activity (for the data ports). Conditions are
sampled every tenth of a second.
The twelve front panel LEDs are grouped into four sections to indicate the status
of the:
H
H
H
H
System (Table 3-1)
Network Interface (Table 3-2)
DTE Drop/Insert (DSX-1) Interface (Table 3-3)
Data Ports (Table 3-4)
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Operation
Table 3-1. System LEDs
Name
Color
Meaning
OK
Green
Indicates the current operational state of the DSU/CSU.
ON:
The DSU/CSU is operational and has power.
OFF:
The DSU/CSU is performing a power-on self-test
or a system failure has occurred.
BLINKING: A software download is in progress.
FAIL
Yellow
Yellow
Indicates a system failure or a self-test.
ON:
A device error/fault is detected or a reset has just
occurred.
OFF:
No system failures are detected.
BLINKING: A self-test is in progress.
TEST
A system test is in progress.
ON:
A loopback or pattern test has been initiated
either locally, by the network, or externally.
OFF:
No tests are active.
Table 3-2. Network Interface LEDs
Name Color Meaning
SIG
Green Monitors the signal being received from the network.
ON:
A recoverable signal is being received from the
network.
OFF:
The signal cannot be recovered from the network
(a Loss of Signal condition exists).
OOF
Yellow Monitors Out Of Frame (OOF) conditions on the received network
signal.
ON:
At least one OOF was detected on the signal during the
sampling period.
OFF:
No OOFs were detected on the signal during the
sampling period.
ALRM Yellow Indicates whether an alarm condition exists on the received network
signal.
ON:
An alarm condition (LOS, LOF, EER, Yellow, AIS)
exists on the received network signal. Use the System
and Test Status screen to determine the alarm type.
OFF:
No alarm condition exists on the network interface
signal.
EER
Yellow Indicates the Excessive Error Rate (EER) has been exceeded on the
network interface.
NOTE: This LED is only valid when ESF framing is being used.
ON:
The EER has been exceeded on the network
interface.
OFF:
The EER has not been exceeded on the network
interface.
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Operation
Table 3-3. DTE Drop/Insert (DSX-1) Interface LEDs
Name
Color
Meaning
SIG
Green
Monitors the signal being received from the DTE Drop/Insert
(DSX-1) interface.
ON:
A recoverable signal is being received from the
DTE Drop/Insert (DSX-1) interface.
OFF:
The signal cannot be recovered from the DTE
Drop/Insert (DSX-1) interface (a Loss of Signal
condition exists).
OOF
Yellow
Yellow
Monitors Out Of Frame (OOF) conditions on the received DTE
Drop/Insert (DSX-1) signal.
ON:
At least one OOF was detected on the signal
during the sampling period.
OFF:
No OOFs were detected on the signal during the
sampling period.
ALRM
Indicates whether an alarm condition exists on the received DTE
Drop/Insert (DSX-1) signal.
ON:
An alarm condition (LOS, LOF, EER, Yellow, AIS)
exists on the received DTE Drop/Insert (DSX-1)
signal. Use the Device Health and Status
command to determine the alarm type.
OFF:
No alarm condition exists on the DTE Drop/Insert
(DSX-1) interface signal.
PDV
Yellow
Monitors Pulse Density Violations (PDV) on the received DTE
Drop/Insert (DSX-1) signal.
ON:
At least one PDV was detected (and corrected)
on the received DTE Drop/Insert (DSX-1) signal
during the sampling period.
OFF:
No PDVs were detected on the received DTE
Drop/Insert (DSX-1) signal during the sampling
period.
BPV
Yellow
Monitors Bipolar Violations (BPV) on the received DTE
Drop/Insert (DSX-1) signal.
ON:
At least one BPV was detected (and corrected)
on the received DTE Drop/Insert (DSX-1) signal
during the sampling period.
OFF:
No BPVs were detected on the received DTE
Drop/Insert (DSX-1) signal during the sampling
period.
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Operation
Table 3-4. Data Port LEDs
Name
Color
Meaning
DTR
Green
Monitors the state of interchange circuit CD (CCITT 108/1, /2) –
Data Terminal Ready received from the synchronous data DTE.
ON:
DTR is being asserted by the synchronous data
DTE.
OFF:
DTR is not being asserted.
TXD
Yellow
Monitors activity on interchange circuit BA (CCITT 103) –
Transmitted Data. This is the data sent from the synchronous
data DTE to the data port on the DSU/CSU.
ON:
Ones are being received from the synchronous
data DTE.
OFF:
Zeros are being received from the synchronous
data DTE.
CYCLING: Both ones and zeros are being received from the
synchronous data DTE.
RXD
Yellow
Monitors activity on interchange circuit BB (CCITT 104) –
Received Data. This is data sent to the synchronous data DTE
from the data port on the DSU/CSU.
ON:
Ones are being sent to the synchronous data
DTE.
OFF:
Zeros are being sent to the synchronous data
DTE.
CYCLING: Both ones and zeros are being sent to the
synchronous data DTE.
CTS
RTS
Yellow
Yellow
Monitors the state of interchange circuit CB (CCITT 106) –
Clear-to-Send sent to the synchronous data DTE.
ON:
CTS is being asserted by the DSU/CSU.
CTS is not being asserted.
OFF:
Monitors the state of interchange circuit CA (CCITT 105) –
Request-to-Send received from the synchronous data DTE.
ON:
RTS is being asserted by the synchronous data
DTE.
OFF:
RTS is not being asserted.
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Operation
Initiating an Asynchronous Terminal Session
You can configure and manage the DSU/CSU from an asynchronous terminal
that is configured for 9.6 kbps, 8 characters, no parity, and 1 stop bit.
You can connect the asynchronous terminal directly to the COM port of the
DSU/CSU, or you can establish a remote connection using dial-in or Telnet
access.
Once the appropriate access is established, the Main Menu screen (Figure 3-2)
appears (unless a password is required).
If a password is required, the Login screen displays the prompt for password
input. (Refer to Entering a Password to Gain Access on page 3-10.)
To move between the Screen area and the Screen Function Keys area
(Figure 3-2), press Ctrl-a (Control key and a).
From the Screen area, you may select the Status, Test, Configuration, or
Control branches.
Ending an Asynchronous Terminal Session
To end the asynchronous terminal session from any screen, press Ctrl-a to move
from the Screen area to the Screen Function Keys area (Figure 3-2), and then
select Exit.
main
Customer ID: Node A
Slot: xx
Model: 3162
MAIN MENU
Status
Test
Configuration
Control
Screen
Area
Screen
Function
Keys
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions
Exit
Area
Figure 3-2. Main Menu Screen
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Operation
Recovering Asynchronous Terminal Operation
If the DSU/CSU is misconfigured, leaving it in a state that does not support
asynchronous terminal operation, use the following recovery procedure.
" Procedure
1. Power cycle the DSU/CSU, waiting for the completion of the power-on
self-test.
2. Press the asynchronous terminal’s Return key five times in succession.
(Begin pressing the Return key within two seconds after the completion of
power-on self-test, and do not wait longer than one second between each
successive key press.)
3. The System Paused screen appears. Use it to reset the COM port
configuration options or to reload all factory default configuration options.
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Operation
Menu Organization
Figure 3-3 shows the organization of the asynchronous terminal menu tree.
Main
Status
Test
Configuration
Control
Call
Directories
Call
Setup
Select
Monitor Jack
Administer
Password
Reset
Device
Cross Connect
Status
Display
LEDs
Performance
Statistics
Identity
Customer
ID
Select
LEDs
System and
Test Status
Start
Download
DTE Channel
Display
Device
Tests
Sync Data
Port Tests
Network &
DTE Tests
Network
Channel
Display
Port
Assignment
Display
Abort
Tests
Configuration
Edit/Display
Sync Data
Port
Network
Clear
Statistics
Network
DTE
Sync Data
Ports
Copy
Ports
Cross
General
User
Alarms Management
Connect Options Interface & Traps
and
Communication
DTE to
Network
Sync Data
Port
Clear
Assignments
Assignments Assignments
Telnet
Sessions
Ethernet
Port
Communication External
Port
Device
Communication General SNMP
Protocol Management
SNMP NMS
Security
SNMP
Traps
00-16827
Figure 3-3. Menu Organization
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Operation
Using Asynchronous Terminal Screens
There are three types of asynchronous terminal screens.
H
H
Menu screens list selections available through the menu system.
Input screens allow you to edit or change information on a screen using
screen function keys (Table 3-5) or keyboard keys (Table 3-6).
H
Display screens show the results from a data collection operation or they
display device-specific information.
The asynchronous terminal supports character matching for entering values in
fields. For example, if the values for a field can be DTE, NET, or PORT and you
enter a D and press Return (Enter), then the field automatically populates with
the value DTE.
Once an operation is initiated, status messages appear in the last row of the
screen. These include Please Wait(when a command takes longer than five
seconds) and Command Complete.
Table 3-5. Screen Function Keys
Screen Function Key
M (MainMenu)
E (Exit)
Usage
Returns to the Main Menu screen.
Terminates the asynchronous terminal session.
Updates the screen with the current information.
Pages up to the previously displayed page of information.
R (Refresh)
U (PgUp)
D (PgDn)
Pages down to the previously displayed page of
information.
S (Save)
Stores changes in nonvolatile memory.
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Operation
Table 3-6. Keyboard Keys
Keyboard Key
Ctrl-a
Usage
Moves the cursor between the Screen area and the
Screen Function Keys area.
Esc
Returns to the previous screen.
Moves the cursor to the next field.
Moves the cursor to the previous field.
Tab
Back (Shift) Tab or Ctrl-k
Backspace
Moves the cursor one position to the left or to the last
character of the previous field.
Spacebar
Selects the next valid value for the field.
Deletes the character that the cursor is on.
Delete
Up Arrow key or Ctrl-u
Moves the cursor up one field within a column on the
same screen.
Down Arrow key or Ctrl-d
Moves the cursor down one field within a column on the
same screen.
Right Arrow key or Ctrl-f
Left Arrow key or Ctrl-b
Ctrl-l
Moves the cursor back one character to the right.
Moves the cursor back one character to the left.
Redraws the screen display.
Return (Enter)
Accepts entry.
NOTE:
Some Telnet applications may require the use of Ctrl-u, Ctrl-d, Ctrl-f, and
Ctrl-b as an alternative to the use of the Up, Down, Right, and Left Arrow
keys.
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Operation
Entering a Password to Gain Access
When access security is required, the Login screen (Figure 3-4) appears before
you can access the Main Menu screen. The password must be entered.
H
H
If the password is valid, the DSU/CSU’s top-level menu appears.
If the password is invalid, an invalid password message appears and the
screen reappears and waits for password entry.
H
If an invalid password is entered three consecutive times, the message User
Interface Idleappears, Telnet sessions are closed, dial-in connections
are disconnected, and an SNMP trap is generated.
login
Customer ID: Node A
Slot: xx
Model: 3162
Enter
Password
LOGIN
Enter Password
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions Exit
Figure 3-4. Entering a Password
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Operation
Displaying LED Conditions
The same conditions monitored by the front panel LEDs can also be monitored
by the Display LEDs screen. This screen is most useful when the DSU/CSU is
being accessed remotely.
" Procedure
To display LED conditions:
1. From the Main Menu screen, select Status.
2. From the Status screen, select Display LEDs.
The Display LEDs screen appears (Figure 3-5).
The screen shows a snapshot of the LEDs every 5 seconds. LEDs that are
illuminated are displayed by inverse video.
Select Refresh to update the screen.
main/status/leds
Customer ID: Node A
Slot: xx
Model: 3162
DISPLAY LEDs
GENERAL
NETWORK
DTE
PORT 1 PORT 2
OK
Fail
Test
Sig
OOF
Alm
EER
Sig
OOF
Alm
PDV
BPV
DTR
TXD
RXD
CTS
RTS
DTR
TXD
RXD
CTS
RTS
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
Refresh
MainMenu
Exit
Figure 3-5. Example of Display LEDs Screen
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Operation
Changing Configuration Options
The DSU/CSU is an intelligent device that displays only valid options for the
current configuration. Therefore, you are only presented with menu choices that
are consistent with the current configuration and operational state of the
DSU/CSU; invalid combinations of configuration options do not appear. For
example, if the DTE Drop/Insert (DSX-1) interface selection is disabled, many of
the menu choices do not appear.
The DSU/CSU offers configuration options located in the following memory areas:
H
Current. This is the configuration option set currently active for the DSU/CSU
is stored here. Before a configuration option set becomes active for the
DSU/CSU, you must save the set to the Current area. When the DSU/CSU is
shipped from the factory, the Current configuration option set is identical to
the Default Factory set. This area can be written to and controls the current
operation of the device.
H
H
H
Customer 1. This is the first of two sets of customer-defined configuration
options. This area can be written to.
Customer 2. This is the second of two sets of customer-defined configuration
options. This area can be written to.
Default Factory 1. This is a set of configuration options preset at the factory.
This set is determined by what is considered to be the most common
configuration used in the DSU/CSU market. Default Factory 1 options are
read-only.
H
Default Factory 2. This is a set of configuration options preset at the factory.
This set is determined by what is considered to be the second most common
configuration used in the DSU/CSU market. Default Factory 2 options are
read-only.
The configuration options are divided into functional groups. Appendix C,
Configuration Options, contains a list of the configuration options and defaults.
The DSU/CSU arrives with two preset factory default configuration settings.
These settings are based on the following:
H
Default Factory 1 – ESF framing format with B8ZS line coding format for
both the network and the DTE Drop/Insert (DSX-1) interfaces. Data ports are
unassigned.
H
Default Factory 2 – D4 framing format with AMI line coding format for both
the network and the DTE Drop/Insert (DSX-1) interfaces. Data ports are
unassigned.
If neither of the factory default settings support your network’s configuration, you
can customize the configuration options to better suit your application.
Use the Configuration branch of the menu tree to display or change DSU/CSU
configuration options (see Appendix C, Configuration Options).
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Operation
Displaying or Editing Configuration Options
" Procedure
To display or edit configuration options:
1. From the Main Menu screen, select Configuration.
The Load Configuration From screen appears (Figure 3-6).
2. From the Load Configuration From screen, select a configuration option set
to load (Current, Customer 1, Customer 2, Default Factory 1, or Default
Factory 2). You cannot edit the Default Factory configuration options, but you
can display them.
After selecting the set of configuration options to load, the Configuration
Edit/Display screen appears (Figure 3-7).
3. Select a functional group to display or edit.
NOTE:
Screen displays may vary depending on the configuration of the
DSU/CSU.
main/config
Customer ID: Node A
Slot: xx
Model: 3162
LOAD CONFIGURATION FROM:
Current Configuration
Customer Configuration 1
Customer Configuration 2
Default Factory Configuration 1
Default Factory Configuration 2
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
MainMenu
Exit
Figure 3-6. Configuration Load Screen
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Operation
main/config/edit
Customer ID: Node A
Slot: xx
Model: 3162
CONFIGURATION EDIT/DISPLAY
Network
DTE
Sync Data Ports
Copy Ports
Cross Connect
General Options
User Interface
Alarms & Traps
Management and Communication
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
Save
MainMenu
Exit
Figure 3-7. Configuration Edit/Display Screen
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Operation
Saving Edit Changes
" Procedure
To save edit changes:
1. From the last edit screen, select Save.
The Save Configuration To screen appears (Figure 3-8).
2. From the Save Configuration To screen, select a configuration option set
(Current, Customer 1, or Customer 2).
Save edit changes to the Current area when you want those changes to take
effect immediately. Save edit changes to the Customer area when you want to
overwrite the existing Customer configuration options and store these changes
for future use.
To protect you from accidentally exiting an edit session before saving your
changes, the system displays the Save Changes?prompt if you select either
MainMenu or Exit from an edit screen. If you respond No, the system exits
without saving the changes. If you respond Yes, you are prompted to specify
where the changes should be saved.
main/config/save
Customer ID: Node A
Slot: xx
Model: 3162
SAVE CONFIGURATION TO:
Current Configuration
Customer Configuration 1
Customer Configuration 2
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
MainMenu
Exit
Figure 3-8. Configuration Save Screen
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Operation
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Configuration
4
Overview
Configuring the DSU/CSU may include:
H
H
H
H
H
H
H
H
H
Setting Customer Identification
Configuring the 10BaseT Port
Configuring the COM Port for SNMP or Telnet Access
Configuring DS0 Channels
Establishing Access Security on the COM Port
Setting a Password
Entering a Password to Gain Access
Selecting the Timing Source
Providing Backup Capability
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Configuration
Setting Customer Identification
The customer identification is used to uniquely identify the DSU/CSU.
" Procedure
To change the customer identification (Customer ID):
1. From the Main Menu screen, select Control.
2. From the Control screen, select Customer ID.
The Customer ID screen appears (Figure 4-1).
3. Use the Customer ID field to set the customer identification.
The customer identification may be up to 8 characters long.
Select Clear to remove all the characters in the associated field.
4. Select Save to store the information in nonvolatile memory.
In addition to the customer identification, you may also enter a system name,
system location, and system contact. Although only 40 characters are displayed
for these fields, you may enter up to 255 characters. The fields scroll as the
additional characters are added.
main/control/customer id
Customer ID: Node A
Slot: xx
Customer
Identification
Field
Model: 3162
CUSTOMER ID
Customer ID:
System Name:
System Location:
System Contact:
Clear
Clear
Clear
Clear
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
Save
MainMenu
Exit
Figure 4-1. Customer Identification Screen
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Configuration
Configuring the 10BaseT Port
To configure the 10BaseT port for SNMP access:
H
H
H
Set the Port Use configuration option to your network protocol.
Set the 10BaseT port’s IP address and subnet mask.
Set the default gateway address.
" Procedure
To configure the 10BaseT port:
1. From the Main Menu screen, select Configuration.
2. From the Load Configuration From screen, select Current.
3. From the Configuration Edit/Display screen, select User Interface.
4. From the User Interface screen, select Ethernet Port.
The Ethernet Port Options screen appears.
5. In the Port Use field, select 802.3 or Version 2.
6. Enter the IP Address, Subnet Mask, and Default Gateway Address.
7. When you are through making configuration option changes, select Save to
store these changes in nonvolatile memory. If you want to return to the User
Interface screen, press your Esc key and then save your changes from that
screen.
main/config/user/ethernet
Customer ID: Node A
Model: 3162
ETHERNET PORT OPTIONS
Port Use:
Version 2
IP Address:
Subnet Mask:
000.000.000.000
000.000.000.000
Clear
Clear
Default Gateway Address:
000.000.000.000
Clear
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
Save
MainMenu
Exit
Figure 4-2. Ethernet Port Options Screen
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Configuration
Configuring the COM Port for SNMP or Telnet
Access
To configure the DSU/CSU for SNMP or Telnet access,
H
Enable the SNMP agent or Telnet server within the DSU/CSU (see
Appendix C, Configuration Options).
H
H
Configure the COM port.
Set the Internet Protocol (IP) address and subnet mask needed to access
the DSU/CSU (see Appendix F, IP Network Addressing Scenario).
H
H
Select the link layer protocol (PPP or SLIP) for the port that provides the link
to the SNMP or Telnet system.
For SNMP links, specify the two community names (and their access levels)
that are allowed to access the device’s Management Information Base (MIB)
(see Appendix C, Configuration Options).
H
H
For SNMP links, configure the device to send traps to the SNMP manager, if
desired (see Appendix C, Configuration Options, and SNMP Traps in
Chapter 5, Monitoring and Testing).
Specify the Telnet password or SNMP validation options, if desired (see
Appendix C, Configuration Options).
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Configuration
Configuring the COM Port for Management
The SNMP manager, Telnet device, or network device (e.g., a router) can be
directly connected to the COM port. The COM port can support either
synchronous or asynchronous PPP, or asynchronous SLIP at data rates of up to
38,400 bps.
" Procedure
To configure the COM port as an SNMP or Telnet link:
1. From the Main Menu screen, select Configuration.
2. From the Load Configuration From screen, select Current.
3. From the Configuration Edit/Display screen, select User Interface.
4. From the User Interface screen, select Communication Port.
5. In the Port Use field, enter Mgmt (Figure 4-3).
6. When you are through making configuration option changes, select Save to
store these changes in nonvolatile memory. If you want to return to the User
Interface screen, press your Esc key and then save your changes from that
screen.
main/config/user/com
Customer ID: Node A
Slot: xx
Model: 3162
Port Use
Field
COMMUNICATION PORT OPTIONS
Port Use:
Mgmt
Port Type:
Clock:
Data Rate (Kbps):
Synchronous
Internal
9.6
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
Save
MainMenu
Exit
Figure 4-3. Communication Port Options Screen
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Configuration
Setting the IP Address
The IP address is the address used by the SNMP or Telnet system to access the
DSU/CSU (see Appendix F, IP Network Addressing Scenario). For DSU/CSUs
using PPP, the IP address can be negotiated if the network device (e.g., router or
SNMP manager) supports such negotiation. The IP address is composed of four
fields with three digits per field (xxx.xxx.xxx.xxx).
The example below assumes that an IP address of 010.155.111.222 is being set
for the COM port. You can use the same principles to assign any value (between
000 and 255 for each digit field).
" Procedure
To assign an IP address to the COM port:
1. From the Main Menu screen, select Configuration.
2. From the Load Configuration From screen, select Current.
3. From the Configuration Edit/Display screen, select Management and
Communication.
4. From the Management and Communication screen, select Communication
Protocol.
5. In the Communication Port’s IP Address field, enter the IP address for the
COM port. Enter the subnet mask under this.
6. When you are through making configuration option changes, select Save to
store these changes in nonvolatile memory. If you want to return to the User
Interface screen, press your Esc key and then save your changes from that
screen.
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Configuration
Selecting the Link Layer Protocol
Two link layer protocols, Point-to-Point Protocol (PPP) and Serial Line Internet
Protocol (SLIP), are supported for connection to an external SNMP manager,
Telnet device, or network device (e.g., a router). PPP can be used for
synchronous or asynchronous operation. SLIP can be used for asynchronous
operation only.
The DSU/CSU implementation of PPP supports the following:
H
H
H
Full negotiation of PPP’s Link Control Protocol (LCP).
Active negotiation of LCP when the connection is established.
Maximum Request Unit (MRU) sizes up to 1500 bytes, but the DSU/CSU will
attempt to negotiate down to 500 bytes.
H
H
The DSU/CSU provides a unique LCP magic number derived from the unit
serial number and the elapsed time.
Full negotiation of escape characters.
The DSU/CSU implementation of PPP does not support Link Quality Reports
(LQR), compression, encryption, Password Authentication Protocol (PAP) or
Challenge Handshake Authentication Protocol (CHAP).
The DSU/CSU implementation of SLIP supports a fixed MRU size of 1006 bytes.
" Procedure
To select the link layer protocol:
1. Select the Communication Protocol Options screen using the procedure
described in the previous section, Setting the IP Address.
2. In the Communication Port’s Com Link Protocol field, enter PPP or SLIP.
3. When you are through making configuration option changes, select Save to
store these changes in nonvolatile memory. If you want to return to the User
Interface screen, press your Esc key and then save your changes from that
screen.
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Configuration
Configuring DS0 Channels
The DSU/CSU provides Cross Connect configuration options that allow you to do
the following:
H
H
H
Display the DS0 assignments for the network, DTE Drop/Insert (DSX-1), and
data port interfaces.
Allocate DS0 channels on the DTE Drop/Insert (DSX-1) interface to the
network interface.
Allocate DS0 channels on the network or DTE Drop/Insert (DSX-1) interface
to particular data ports.
H
H
Map data from one port to another.
Clear (deallocate) all DS0 channels from the network, DTE Drop/Insert
(DSX-1), or data port interface.
To allocate DS0 channels, begin by defining the logical channel configuration for
the network interface, and then the DTE Drop/Insert (DSX-1) interface, and then
any ports, if desired. See Figure 4-4 for an example of a conceptual diagram of a
channel configuration.
Blank configuration worksheets are provided at the back of Appendix C,
Configuration Options. These worksheets will help you prepare to perform the
procedures in this section. Figure 4-5 and Figure 4-6 are provided as an example
only. See Appendix C for other useful worksheets.
NOTE:
The procedures in this section are examples only. Screen displays may vary
depending on the configuration of the DSU/CSU. For example, the DTE
Drop/Insert (DSX-1) interface is not displayed if this interface is disabled.
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Configuration
DTE DROP/INSERT
(DSX-1) INTERFACE
D1
D2
NETWORK
INTERFACE
D3
N1
D4
N2
D5
N3
D6
N4
D7
N5
D8
N6
D9
N7
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
N8
N9
N10
N11
N12
N13
N14
N15
N16
N17
N18
N19
N20
N21
N22
N23
N24
PORTS
PRT 1
PRT 2
496-15016
Figure 4-4. Example of Channel Allocation
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Configuration
Network Interface
Network Channel
Allocation
N1
D1
D2
D3
D4
D5
N2
N3
N4
N5
N6
N7
N8
N9
D9
N10
N11
N12
N13
N14
N15
N16
N17
N18
N19
N20
N21
N22
N23
N24
Allocations
D10
D11
D12
D15
Prt1
Prt1
Prt1
Prt2
Prt2
Prt2
Prt2
Prt2
Prt2
D1 – D24 indicates allocation to DTE Drop/Insert (DSX-1) channels.
Prt1 – Prt2 indicates allocation to synchronous data ports.
Figure 4-5. Example of Network Interface Worksheet
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Configuration
DTE Drop/Insert (DSX-1) Interface
DTE (DSX-1) Channel Allocation
D1
N1
N2
N3
N4
N5
D2
D3
D4
D5
D6
D7
D8
D9
N9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
Allocations
N10
N11
N12
N13
N1 – N24 indicates allocation to network channels.
Figure 4-6. Example of DTE Drop/Insert Interface Worksheet
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Configuration
Displaying DS0 Channel Assignments
Use the DTE to Network Assignments screen (in the Cross Connect branch) to
view how the DS0 channels are currently allocated. DS0 designations used on
this screen are shown in Table 4-1.
Table 4-1. DTE to Network DS0 Designations
Designation
Available
Assigned
Nnn
Meaning
The DS0 channel is not allocated.
The DS0 channel is allocated to one of the data ports.
The DS0 channel is allocated to the network interface DS0
channel nn, where nn can be any number from 01 through
24.
DTEnn
The DS0 channel is allocated to the DTE Drop/Insert
(DSX-1) interface DS0 channel nn, where nn can be any
number from 01 through 24.
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Configuration
" Procedure
To display the DS0 channel allocation:
1. From the Main Menu screen, select Configuration.
2. From the Load Configuration From screen, select Current.
3. From the Configuration Edit/Display screen, select Cross Connect.
4. From the Cross Connect screen, select DTE To Network Assignments.
The DTE to Network Assignments screen appears (Figure 4-7).
5. To view specific port assignments on the Network Channel Display screen,
select NetChan at the bottom of the DTE to Network Assignments screen.
main/config/cross_connect/dte
Customer ID: Node A
Slot: xx
Model: 3162
DTE (DSX-1) TO NETWORK ASSIGNMENTS
N01
N02
N03
N04
N05
N06
N07
N08
DTE01
DTE02
DTE03
DTE04
DTE05
Available Available Available
N09
N10
N11
N12
N13
N14
N15
N16
DTE09
DTE10
DTE11
DTE12
DTE15
Assigned Assigned Assigned
N17
N18
N19
N20
N21
N22
N23
N24
Available Assigned Assigned Assigned Assigned Assigned Assigned Available
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
Save NetChan DTEChan PtAssign
MainMenu
Exit
NetChan
Selection
Figure 4-7. Example of DTE Drop/Insert Interface Worksheet
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Configuration
Allocating DS0 Channels from the DTE Drop/Insert Interface to the
Network Interface
" Procedure
To allocate DS0 channels from the DTE Drop/Insert (DSX-1) interface to the
network interface:
1. From the Main Menu screen, select Configuration.
The Load Configuration From screen appears.
2. From the Load Configuration From screen, select Current.
The Configuration Edit/Display screen appears.
3. From the Configuration Edit/Display screen, select Cross Connect.
The Cross Connect screen appears.
4. From the Cross Connect screen, select DTE To Network Assignments.
The DTE to Network Assignments screen appears (Figure 4-8).
5. Assign the DS0 channels from the DTE Drop/Insert (DSX-1) interface to the
network interface. In the example shown in Figure 4-7, the DTE Drop/Insert
(DSX-1) DS0 channel 01 is assigned to the network DS0 channel 01.
6. Select Save to store these settings in nonvolatile memory.
main/config/cross_connect/dte
Customer ID: Node A
Slot: xx
Model: 3162
DTE to
Network
Assignment
DTE (DSX-1) TO NETWORK ASSIGNMENTS
N01
N02
N03
N04
N05
N06
N07
N08
DTE01
Available Available Available Available Available Available Available
N09
N10
N11
N12
N13
N14
N15
N16
Available Available Available Available Available Assigned Assigned Assigned
N17 N18 N19 N20 N21 N22 N23 N24
Available Assigned Assigned Assigned Assigned Assigned Assigned Available
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
Save NetChan DTEChan PtAssign
MainMenu
Exit
Figure 4-8. Making DTE to Network Assignments
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Configuration
Configuring DS0 Channels for Robbed Bit Signaling
By using the DTE configuration options, you can specify which DS0 channels
carry Robbed Bit Signaling (RBS) information for voice channels.
" Procedure
To specify DTE Drop/Insert (DSX-1) channels used to carry voice information:
1. From the Main Menu screen, select Configuration.
The Load Configuration From screen appears.
2. From the Load Configuration From screen, select Current.
The Configuration Edit/Display screen appears.
3. From the Configuration Edit/Display screen, select DTE.
The DTE Interface Options screen appears (Figure 4-9).
4. Enter RBS for each DS0 channel that you want to configure for voice
applications.
The designation None indicates the absence of RBS information. These
channels (known as Clear Channels) are used for data applications.
5. Select Save to store these settings in nonvolatile memory.
main/config/dte
Customer ID: Node A
Slot: xx
Model: 3162
DTE INTERFACE OPTIONS
Interface Status:
Enable
ESF
Line Framing Format:
Line Coding Format:
B8ZS
Line Equalization:
DTE LB on External Contact:
Send all Ones on DTE Failure:
0-133
Disable
Enable
DTE
Signaling:D01
D02
None
D03
None
D04
None
D05
None
D06
None
D07
None
D08
None
Configured
for RBS
None
D09
RBS
D10
None
D11
None
D12
None
D13
None
D14
None
D15
None
D16
None
D17
D18
D19
D20
D21
D22
D23
D24
None
None
None
None
None
None
None
None
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
Save
MainMenu
Exit
Figure 4-9. DTE to Interface Options Screen
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Configuration
Allocating Data Ports Using the Block or ACAMI Assignment Method
By using the block or ACAMI (Alternate Channel Alternate Block Inversion)
assignment method, you can assign a data port to a block of contiguous DS0
channels on either the network interface or the DTE Drop/Insert (DSX-1)
interface.
The block assignment method allows a block of contiguous channels to be
assigned by specifying a data port rate and an initial DS0 channel (the first DS0
channel in a block of DS0 channels). The number of channels assigned is
determined by the port rate. These channels are automatically assigned to the
destination T1 interface (Network or DTE Drop/Insert) when the initial DS0
channel is selected.
The ACAMI assignment method also allows a block of contiguous channels to be
assigned, however, with ACAMI, the number of channels assigned is twice the
number needed for the port rate. This is because with ACAMI, every alternate
DS0 channel (starting with the n+1 DS0 channel), does not carry data from the
port, but instead always transmits and receives all ones.
" Procedure
To assign data ports by the block or ACAMI method:
1. From the Main Menu screen, select Configuration.
2. From the Load Configuration From screen, select Current.
3. From the Configuration Edit/Display screen, select Cross Connect.
4. From the Cross Connect screen, select Sync Data Port Assignments.
5. Use the Assign To field to specify the destination T1 interface (Network or
DTE).
6. Use the Assign By field to specify the assignment method (Block or ACAMI).
7. After filling in the Port Rate field, specify a port assignment for the initial DS0
channel in a block of contiguous, available DS0 channels.
8. Select Save or, if you want to return to the Cross Connect screen, press your
Esc key and then save your changes from that screen.
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Configuration
Allocating Data Ports Using the Individual Channel Assignment
Method
By using the individual channel assignment method, you can assign a data port
to individual DS0 channels on either the network interface or the DTE Drop/Insert
(DSX-1) interface.
This method individually selects the DS0 channels to allocate to the data port.
The data port rate is automatically determined based on the number of channels
selected.
" Procedure
To assign data ports by the individual channel method:
1. From the Main Menu screen, select Configuration.
2. From the Load Configuration From screen, select Current.
3. From the Configuration Edit/Display screen, select Cross Connect.
4. From the Cross Connect screen, select Sync Data Port Assignments.
5. Use the Assign To field to specify the destination T1 interface (Network or
DTE).
6. Use the Assign By field to specify the assignment method (Channel).
7. Specify the port assignments for the individual DS0 channels. The DS0
channels do not need to be contiguous.
The port rate increases as the port is assigned to additional DS0 channel.
For two DS0 channels (at 64 kbps each), a port rate of 128 kbps is required.
8. Select Save or, if you want to return to the Cross Connect screen, press your
Esc key and then save your changes from that screen.
Clearing DS0 Channel Allocation
You can clear (deallocate) all the DS0 channels currently allocated to either the
network interface, the DTE Drop/Insert (DSX-1) interface, or the synchronous
data ports.
" Procedure
To clear DS0 channel allocation:
1. From the Main Menu screen, select Configuration.
2. From the Load Configuration From screen, select Current.
3. From the Configuration Edit/Display screen, select Cross Connect.
4. From the Cross Connect screen, select Clear Assignments.
5. To clear all DS0 channel allocations, select Clear All. Otherwise, select the
appropriate DS0 channel group to clear (DTE, Network, or Sync Data Ports).
A message will appear, Are You Sure?.
6. Enter Yes to clear the specified DS0 channels.
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Configuration
Establishing Access Security on the COM Port
Although the password feature is available, it is not required. If used, it ensures
access security before control is passed to a device connected to a port. The
following procedure is an example only. It shows how to enable the password for
the communication port. Passwords can also be enabled for Telnet sessions.
" Procedure
To establish access security on the communication port:
1. From the Main Menu screen, select Configuration.
2. From the Load Configuration From screen, select Current.
3. From the Configuration Edit/Display screen, select User Interface.
4. From the User Interface Options screen, select Communication Port.
5. In the Password Required field, enter Enable.
6. Select Save to store this setting in nonvolatile memory.
7. From the Save Configuration To screen, select Current.
The password itself is set separately. Refer to the following section, Setting a
Password.
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Configuration
Setting a Password
In addition to establishing access security on a port (refer to the previous section,
Establishing Access Security on the COM Port), the password itself is set.
Unless you specify otherwise, the password is null.
" Procedure
To set a password:
1. From the Main Menu screen, select Control.
2. From the Control screen, select Administer Password.
The Password Entry screen (Figure 4-10) is used to add a new password or
modify an existing password.
3. Enter a new password in the Password field.
The password may be 1 to 8 characters long and may contain the characters
0 through 9, a through z, and/or A through Z.
4. Use the Re-Enter Password field to verify the new password.
5. Select Save.
Once a password is saved, the Login Records Savedmessage appears in
the last row of the screen.
main/control/admin_password
Customer ID: Node A
Slot: xx
Model: 3162
Enter New
Password
PASSWORD ENTRY
Password:
Re-Enter Password:
Re-Enter
Password
Save
Password
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu
Save
MainMenu
Exit
Figure 4-10. Setting a Password
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Configuration
Selecting the Timing Source
The DSU/CSU provides the ability to select a master clock (timing) source that is
used to synchronize all of the T1 and data port interfaces on the DSU/CSU. The
clock for each interface is at the appropriate rate for that interface (e.g.,
1.544 Mbps for the T1 interfaces, the configured port rate for the data ports), and
it is independent of the master clock rate. This means that the master clock rate
and the DSU/CSU interface rates may be different.
The clock source configuration options enable you to select either the network
interface, a synchronous data port, the internal clock, the DTE Drop/Insert
(DSX-1) interface, or an external clock. If external clocking is selected, you must
use the clock rate configuration option to specify the clock rate. Figure 4-11
shows some common clocking configurations. For more information on
configuration options, refer to Appendix C.
NETWORK
CLOCK: NETWORK
CLOCK: NETWORK
CLOCK: INTERNAL
CLOCK: NETWORK
CLOCK: EXTERNAL
CLOCK: NETWORK
CLOCK: NETWORK
CLOCK: NETWORK
PBX
CLOCK: DTE DROP/INSERT (DSX-1) CONNECTOR
TERMINAL
EQUIPMENT
CLOCK: PORT 1
496-15012-01
Figure 4-11. Common Clocking Configurations
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Configuration
Providing Backup Capability
If the T1 network fails, the DSU/CSU provides the ability to reconfigure the unit
and restore (at least partially) priority data circuits through an external backup
device.
You can store backup configuration options in the Customer 2 set of
customer-defined configuration options. The Enterprise MIB variable
devConfigAreaCopy allows the entire contents of one configuration area to be
copied into another configuration area via SNMP.
By cross-connecting two synchronous data ports to each other, one port can
provide a backup path for the other. As soon as the ports are configured to be
mapped to each other, Data Set Ready (DSR) for the ports is turned on. The
external backup device can be configured to initiate dialing when it detects the
off-to-on transition of DSR.
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Configuration
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blank.
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Monitoring and Testing
5
Overview
The DSU/CSU can detect and report faults, and perform diagnostic tests. These
features ensure that your DSU/CSU is giving you optimum performance in your
network.
Self-Test Results
Use the System and Test Status screen to display the results of the power-on
self-test. Possible messages are listed in Table 5-1.
See Chapter 2, Installation, for more information about power-on self-test.
" Procedure
To display power-on self-test results:
1. From the Main Menu screen, select Status.
2. From the Status screen, select System and Test Status.
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Monitoring and Testing
Table 5-1. Self-Test Results
Message
Description
Alarm Fail
The unit failed to transmit AIS or to detect an Yellow alarm.
B8ZS/LOS Fail
The unit failed to encode data properly or to detect Loss Of
Signal.
CPU Fail
The central processing unit failed internal testing.
Device Fail
One or more of the unit’s integrated circuit chips failed to pass
internal device level testing.
DSU Fail
The unit failed to internally loop data on the DSU.
DSU Port n Fail
DTE T1 Fail
Port’s integrated circuitry failed to pass device internal testing.
The unit failed to internally loop data on the DTE T1 (DSX-1)
circuit.
Failure xxxxxxxx
An 8-digit hexadecimal failure code is provided for service
personnel.
Memory Fail
Modem fail
The unit failed program checksum verification.
Unit failed to internally loop data through the modem circuit.
The unit failed to internally loop data on the network T1 circuit.
No problems were found during power-on.
Network T1 Fail
Passed
Unknown Exp Dev
The unit is not able to recognize the expansion device connected
to the main circuit card.
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Monitoring and Testing
Device Health and Status
Use the System and Test Status screen to display the current health and status
messages for the DSU/CSU. Table 5-2 lists these messages in priority order.
" Procedure
To display health and status messages:
1. From the Main Menu screen, select Status.
2. From the Status screen, select System and Test Status.
Table 5-2. Health and Status Messages (1 of 2)
Message
Description
AIS at DTE
An Alarm Indication Signal is being received by the DTE
Drop/Insert (DSX-1) interface.
AIS at Network
An Alarm Indication Signal (unframed all ones signal) is being
received by the network interface.
Device Fail
xxxxxxxx
An internal error has been detected by the operating software. An
8-digit code appears for use by service personnel. The condition
is cleared by resetting the device.
Download Failed
EER at Network
A download attempt was interrupted and failed to complete. The
condition is cleared by resetting the device.
An Excessive Error Rate condition has been detected on the
network interface. The condition is cleared when the error rate
falls below the threshold value.
EER at Port n
The error rate of the received signal has exceeded the configured
threshold for data port Port n (where n is the port number). This
condition only occurs if the synchronous data port’s Embedded
Data Link (EDL) is enabled. The condition is cleared when the
error rate falls below the synchronous data port’s configured
threshold value.
Ethernet Down
LOS at DTE
There is no electrical activity on the 10BaseT port.
A Loss Of Signal condition (175 consecutive zeros) has been
detected on the DTE Drop/Insert (DSX-1) interface. The condition
is cleared when the density of ones to zeros received is 12.5%.
LOS at Network
A Loss Of Signal condition (175 consecutive zeros) has been
detected on the network interface. The condition is cleared when
the density of ones to zeros received is 12.5%.
Modem Connected
The integral modem is currently connected. This message is only
displayed for standalone DSU/CSUs.
Network Com Link
Down
The network communication link is in a down state. This condition
only occurs if the COM port is configured for Mgmt, and
communication between the management system and the
DSU/CSU is not currently possible for this port.
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Monitoring and Testing
Table 5-2. Health and Status Messages (2 of 2)
Message
Description
OOF at DTE
An Out Of Frame condition has been detected on the DTE
Drop/Insert (DSX-1) interface. The condition is cleared when a
reframe occurs.
OOF at Network
An Out Of Frame condition (2 out of 4 frame synchronization bits
in error) has been detected on the network interface. The
condition is cleared when a reframe occurs.
OOF at Port n
An Out Of Frame condition has been detected on data port Port n
(where n is the port number). This condition only occurs if the
synchronous data port’s Embedded Data Link (EDL) is enabled.
Primary Clock
Failed
The primary clock has failed. Timing for the DSU/CSU is provided
by the internal clock.
System Operational This message only appears if there are no valid alarm or status
messages.
Yellow at DTE
A Yellow Alarm signal is being received by the DTE Drop/Insert
(DSX-1) interface.
Yellow at Network
A Yellow Alarm signal is being received by the network interface.
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Monitoring and Testing
Performance Reports
Use the Performance Statistics screen to access performance reports for the
DSU/CSU.
When the network interface is configured for ESF operation, network
performance is continuously monitored and maintained in two sets of aggregate
registers: Carrier Network Interface Registers (Telco) and User Network Interface
Registers (User). The User registers contain an extra status register (Status).
Registers are listed in Table 5-3. These registers are status registers that collect
performance data for the previous 24-hour period. Performance data is updated
in 15-minute intervals. After 15 minutes, the current interval is rolled over into a
set of accumulator registers that represent the previous 96 15-minute intervals for
the register. An interval total of how many of the 96 registers contain valid data is
also kept, as well as a 24-hour total for each accumulator register.
Port performance is continuously monitored and maintained in memory registers
when the port is configured to use EDL. The DSU/CSU maintains two sets of port
registers for each synchronous data port: far-end port registers and near-end port
registers. These registers are status registers that collect performance data for
the previous 8-hour period. Port data is updated in 15-minute intervals. After
15 minutes, the current interval is rolled over into a set of accumulator registers
that represent the previous 32 15-minute intervals for the register. An interval
total of how many of the 32 registers contain valid data is also kept, as well as a
8-hour total for each accumulator register.
You can reset the performance registers via the Clear Statistics selection on the
Performance Statistics screen.
" Procedure
To display performance reports:
1. From the Main Menu screen, select Status.
2. From the Status screen, select Performance Statistics.
3. From the Performance Statistics screen, select either Network or Sync Data
Ports depending on the type of statistics that you want to view.
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Monitoring and Testing
Table 5-3. Performance Registers (1 of 2)
Register
Interval Description
Totals Description
Current
Interval
Timer
This register records the number N/A
of seconds in the current
15-minute interval. The
maximum is 900 seconds. This
register is valid for the current
interval only.
ESF Error
Events
An error event is an ESF frame
with either a Cyclic Redundancy
Check (CRC) error or an Out Of
Frame (OOF) event. The
N/A
maximum count is 65,535. This
register is only reset as a result
of a reset command from the
network. This register is valid for
the current interval only.
Valid Interval
Total
N/A
Records the number of valid
15-minute intervals in the
previous x hours, where x is
24 hours for aggregate
performance and 8 hours for
port performance. This register
is not valid for the current
interval.
ES
The number of errored seconds The total number of errored
for the current interval. An
errored second is any second
with one or more ESF error
events. The maximum is
900 seconds.
seconds for the previous x
hours, where x is 24 hours for
aggregate performance and
8 hours for port performance.
UAS
The number of unavailable
seconds for the current interval. seconds for the previous
The total number of unavailable
An unavailable second is any
one second interval when
service is unavailable.
(Detection occurs with
10 consecutive unavailable
seconds.) The maximum is
900 seconds.
x hours, where x is 24 hours for
aggregate performance and
8 hours for port performance.
SES
BES
The number of severely errored The total number of severely
seconds for the current interval. errored seconds for the previous
A severely errored second is
any second with 320 or more
x hours, where x is 24 hours for
aggregate performance and
CRC errors, or any second with 8 hours for port performance.
one or more OOF events. The
maximum is 900 seconds.
The number of bursty errored
seconds for the current interval. errored seconds for the previous
A bursty errored second is any x hours, where x is 24 hours for
second with more than one, but aggregate performance and
The total number of bursty
less than 320, CRC errors. The
8 hours for port performance.
maximum is 900 seconds.
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Monitoring and Testing
Table 5-3. Performance Registers (2 of 2)
Register
Interval Description
Totals Description
CSS
(Not valid for
The number of controlled slip
seconds for the current interval. slip seconds for the previous
The total number of controlled
Port registers.)
x hours, where x is 24 hours for
aggregate performance and
8 hours for port performance.
LOFC
The loss of frame count for the
current interval. This is a count
of the number of times that an
The total loss of frame count for
the previous x hours, where x is
24 hours for aggregate
LOF is declared. The maximum performance and 8 hours for
count is 255.
port performance.
Status
(Only valid for
User registers.)
The status events register
records whether one or more of
the following events have
occurred at least once during
the interval. The event is
N/A
identified by a letter as follows:
H Y – A Yellow Alarm signal has
been received on the network
interface.
H L – Loss Of Signal has
occurred on the DTE
Drop/Insert (DSX-1) interface.
H E – The Excessive Error Rate
threshold has been
exceeded.
H F – A Frame Synchronization
Bit Error has been detected.
H V – A Bipolar Violation has
been detected.
H If none of these events
occurred during the interval,
none will be displayed.
Complete
Bad line conditions or loopback
tests may prevent far-end port
statistics from reaching the
DSU/CSU. This field indicates
whether the 15-minute interval
contains 900 seconds of
N/A
(Only valid for
far-end port
registers.)
statistics. If one or more
seconds of far-end statistics are
missing, this field will display no,
otherwise it will display yes.
This field is only displayed when
Far is selected from the Prtn
screen.
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Monitoring and Testing
Ethernet Statistics
You can obtain information about the 10BaseT port with the Ethernet Port Status
screen of the Status branch.
" Procedure
To display Ethernet statistics:
1. From the Main Menu screen, select Status.
2. From the Status screen, select Ethernet Port Status.
The Ethernet Port Status screen appears, displaying 10BaseT port settings
and statistics.
main/status/ethernet
Customer ID: Node A
Model: 3162
ETHERNET PORT STATUS
Port Use:
Version 2
IP Address:
135.18.40.2
Subnet Mask:
Default Gateway Address:
Ethernet MAC Address:
255.255.255.000
135.18.2.0
00:60:94:EF:56:5D
Frames Transmitted:
Frames Received:
Errored Frames:
Excessive Collisions:
Carrier Sense Errors:
0000000000
0000000000
0000000000
0000000000
0000000000
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
ESC for previous menu MainMenu Exit
Refresh
Clrstats
Select Refreshto update the statistics. Select Clrstatsto set all the statistics
to zero.
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Monitoring and Testing
Table 5-4. Ethernet Port Status
Field
Description
Port Use
Shows whether the port is enabled. The field contains one of:
H Disabled – The port is disabled.
H 802.3 – The port uses IEEE 802.3 protocol.
H Version 2 – The port uses Ethernet Version 2 protocol.
IP Address
Displays the IP address of the port.
Subnet Mask
Displays the subnet mask for the IP address.
Displays the IP address used for IP datagrams not on this subnet.
Default Gateway
Address
Ethernet MAC
Address
Displays the Media Access Control address of the port.
Frames
Transmitted
Displays the number of frames successfully transmitted since the
unit was last powered up, or this field was reset.
Frames Received Displays the number of frames successfully received since the unit
was last powered up, or this field was reset.
Errored Frames
Displays the number of frames that were in error since the unit was
last powered up, or this field was reset.
Excessive
Collisions
Displays the number of frames for which transmission failed due to
excessive collisions since the unit was last powered up, or this field
was reset.
Carrier Sense
Errors
Displays the number of times the carrier sense condition was lost
or never asserted since the unit was last powered up, or this field
was reset.
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Monitoring and Testing
IP Routing Table
You can obtain information about IP addresses set in the DSU/CSU by using the
IP Routing Table screen of the Status branch.
" Procedure
To display the IP routing table:
1. From the Main Menu screen, select Status.
2. From the Status screen, select IP Routing Table.
The IP Routing Table screen appears.
main/status/ip_route
Customer ID: Node A
Model: 3162
IP ROUTING TABLE
Destination
Mask
Gateway
Tbl Hop Proto Intf TTL
000.000.000.000 000.000.000.000 135.026.021.254 D
135.026.021.000 255.255.255.000 000.000.000.000 R
135.026.021.105 255.255.255.255 135.026.021.105 L
1
0
0
Local Ether 999
Other Ether 999
Local NA
999
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
ESC for previous menu MainMenu Exit
Refresh
Select Refreshto update the fields.
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Monitoring and Testing
Table 5-5. IP Routing Table
Field
Description
Destination
Mask
Displays the destination IP address for the route.
Displays the subnet mask for the Destination IP address.
Displays the gateway IP address for the route.
Gateway
Tbl
Displays a code for the routing table the route resides in. Tbl is one
of:
H D – Default Table. The route is added based on the Default
Gateway Address set in the Ethernet Port Options screen, or the
Default Network Destination set in the Communication Protocol
Options screen.
H L – Local Table. The Local Table has an entry for each interface
that can have an IP address.
H R – Remote Table. This is the primary routing table, which holds
routes to other devices.
Hop
Displays the number of hops in the route to the destination.
Proto
Displays the protocol used to add the route to the routing table.
Proto is one of:
H RIP – The route was discovered using Routing Information
Protocol.
H Local – The route was added based the DSU/CSU’s local
configuration.
H NMS – The route was added by a Network Management System
using SNMP.
H ICMP – The route was added because an Internet Control
Management Protocol redirect message was received from a
router, indicating a better route to the destination.
H Other – None of the above methods was used. This would be
shown for a temporary route added to respond to an IP packet.
Intf
Displays the interface used to reach the destination. Intf is one of:
H COM – The communications port.
H Ether – The 10BaseT port.
H FDL – The Facility Data Link.
H EDL1 – The Embedded Data Link (EDL) for Port 1.
H EDL2 – The EDL for Port 2.
H NA – Not Applicable
TTL
Displays the Time To Live set for the route. 1–998 denotes a
number of seconds; 999 denotes infinity (the route never expires).
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Monitoring and Testing
Alarms
To display or print alarm messages, you can attach the DSU/CSU, either locally
or remotely, to an ASCII terminal or printer. Alarms can also be displayed on a PC
that is using a terminal emulation package.
You can route these alarms to the COM port or dial them out using an external
device.
Each alarm message contains a customer identification to indicate which remote
DSU/CSU is reporting an alarm. For information about customer identification,
refer to Setting Customer Identification in Chapter 4, Configuration.
Possible alarm messages are as follows:
H Continuous Loss Of Signal detected at the x Interface
(where x is either Network or DTE).
H Alarm Cleared. Loss Of Signal condition at the x
Interface(where x is either Network or DTE).
H Continuous Out Of Frame condition detected at the x
Interface(where x is either Network or DTE).
H Alarm Cleared. Out Of Frame condition at the x Interface
(where x is either Network or DTE).
H Alarm Indication Signal received at the x Interface(where
x is either Network or DTE).
H Alarm Cleared. Alarm Indication Signal at the x Interface
(where x is either Network or DTE).
H An Excessive Error Rate has been detected at the Network
Interface.
H Alarm Cleared. An Excessive Error Rate at the Network
Interface.
H Yellow Alarm signal received at the x Interface(where x is
either Network or DTE).
H Alarm Cleared. Yellow Alarm signal at the x Interface
(where x is either Network or DTE).
H Continuous Out Of Frame condition detected at synchronous
data port n(where n is the port number).
H Alarm Cleared. Out Of Frame condition at synchronous data
port n (where n is the port number).
H An Excessive Error Rate has been detected at synchronous
data port n (where n is the port number).
H Alarm Cleared. An Excessive Error Rate at synchronous
data port n (where n is the port number).
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Monitoring and Testing
If two alarm conditions are detected at once, the higher priority alarm is reported.
However, if an even higher priority alarm is detected before the first alarm is
cleared, the later alarm is not reported. (The alarms listed above are in priority
order with the highest priority listed first.)
Alarms remain active until the alarm condition is cleared. Also, an alarm clear
message is only sent when there are no other alarms active.
For information about alarm configuration options, refer to Alarm and Trap
Configuration Options in Appendix C, Configuration Options.
For troubleshooting information, refer to Troubleshooting on page 5-15.
SNMP Traps
SNMP traps are unsolicited messages that are sent from the DSU/CSU to an
SNMP manager when the DSU/CSU detects certain pre-specified conditions.
These traps enable the SNMP manager to monitor the state of the network.
The SNMP Trap configuration option must be enabled for trap messages to be
sent over the communications link. You must specify the number of SNMP
managers that are to receive traps from this DSU/CSU, an IP address for each
SNMP manager specified, and the type of traps to be sent from this DSU/CSU.
For more information, refer to Appendix C, Configuration Options.
Trap types consist of the following:
H
General traps – Include warmStart and authenticationFailure. The DSU/CSU
sends a warmStart trap after it has been reset to indicate that it has just
reinitialized itself. The DSU/CSU sends an authenticationFailure trap when it
has received an SNMP protocol message that has not been properly
authenticated. These traps are enabled by the General Traps configuration
option.
H
H
Enterprise Specific traps – Signify that the DSU/CSU has recognized an
enterprise-specific event. See Table 5-6 for enterprise-specific traps. These
traps are enabled by the Enterprise Specific Traps configuration option.
Link Traps – Identify the condition of the communications interface, either
linkDown (one of the communications interfaces has failed) or linkUp (one of
the communications interfaces has just come up). These traps are enabled
by the Link Traps configuration option. The communications interfaces for
which these traps can be generated are specified by the Link Trap Interfaces
configuration option. Table 5-7 defines traps for each interface.
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Monitoring and Testing
Table 5-6. Enterprise-Specific Trap Definitions
Trap Value
Event
enterpriseClockFail(1)
enterpriseSelfTestFail(2)
The currently configured primary clock source has failed.
A DSU/CSU hardware failure is detected at self-test. This
trap is generated after DSU/CSU initialization.
enterpriseDeviceFail(3)
enterpriseTestStart(5)
An internal DSU/CSU failure is detected by the operating
software.
A test is initiated.
enterpriseConfigChange(6) A configuration option is changed.
enterpriseTestClear(105) A test is concluded.
Table 5-7. SNMP Trap per Interface
Interface
Trap Meaning
T1 Network
Up = No alarm or test conditions.
Down = Alarm or test conditions.
DTE Drop/Insert (DSX-1)
Synchronous Data Ports
Up = No alarm or test conditions, and the interface is
enabled.
Down = Alarm or test conditions, or the interface is
disabled.
Up = No test conditions, the port is assigned to a network
interface, and both CTS and DSR are ON.
Down = Test conditions, the port is unassigned, or either
CTS or DSR is off.
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Monitoring and Testing
Troubleshooting
The DSU/CSU is designed to provide you with trouble-free service. However,
Table 5-8 gives you some direction if a problem occurs.
For problems other than those listed in the table, please contact your service
representative.
Table 5-8. Troubleshooting (1 of 2)
Symptom
Possible Cause
Solutions
No power
1. The power module is not 1. Check the power module
securely attached.
attachment.
2. The wall receptacle has
no power.
2. Check the wall
receptacle power by
plugging in some
equipment that is known
to be working.
Power-On Self-Test fails
The DSU/CSU has
detected an internal
hardware failure.
Contact your service
representative.
Message LOS at
Network appears
1. Network cable problem.
1. Check that the network
cable is securely
attached at both ends.
2. No signal is being
transmitted at the far
end.
2. Check the far-end status.
3. Facility problem.
3. Contact your facility
provider.
Message LOS at DTE
appears
1. 1.DTE Drop/Insert
1. Check that the DTE
Drop/Insert (DSX-1)
cable is securely
(DSX-1) cable problem.
attached at both ends.
2. No signal being
transmitted from the
DTE.
2. Check the DTE status.
Message OOF at
Networkappears
1. Incompatible framing
format between the
network and the
DSU/CSU.
1. Check that the framing
format for the network
interface is correct.
2. Network cabling
problem.
2. Check that the network
cable is securely
attached at both ends.
3. Facility problem.
3. Contact your facility
provider.
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Monitoring and Testing
Table 5-8. Troubleshooting (2 of 2)
Symptom
Possible Cause
Solutions
Message OOF at DTE
appears
1. Incompatible framing
format between the
Drop/Insert port on the
customer premises
equipment and the
DSU/CSU.
1. Check that the framing
format for the DTE
Drop/Insert (DSX-1)
interface is correct.
2. DTE Drop/Insert (DSX-1) 2. Check that the DTE
cabling problem.
Drop/Insert (DSX-1)
cable is securely
attached at both ends.
Message
Yellow at Network
1. Network cable problem.
1. Check that your network
cable is securely
appears
attached at both ends.
2. Far-end device has lost
framing sync on the line.
2. Check the status of the
far-end device.
3. Facility problem.
3. Contact your facility
provider.
Message
Yellow at DTEappears
DTE has detected an LOS
or LOF condition.
1. Check the status of the
DTE.
2. Check that the DTE
Drop/Insert (DSX-1)
cable is securely
attached at both ends.
Message
AIS at Network
1. Upstream device is
transmitting an AIS.
1. Check the status of the
upstream device(s).
appears
2. The network is
2. Contact your facility
provider.
transmitting an AIS.
Message
DTE is sending an AIS.
Check the DTE.
AIS at DTE
appears
Message EER at
Network appears
Facility problem.
Contact your facility
provider.
BPV LED is ON
1. Incompatible line coding 1. Check that the line
format between the DTE
and the DSU/CSU.
coding format for the
DTE Drop/Insert (DSX-1)
interface is correct.
2. DTE Drop/Insert (DSX-1) 2. Check that the DTE
cable problem.
cable is securely
attached at both ends.
A failure message appears Internal DSU/CSU problem. Record the 8-digit code,
followed by an 8-digit code
(x x x x x x x x )
then contact your service
representative.
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Monitoring and Testing
Test Jacks
Six test jacks (Figure 5-1) are located on the front panel. The DSU/CSU test jack
functions are shown in Figure 5-2 and described in Table 5-9. The Selectable
Test Jack branch of the asynchronous terminal menu tree (see Appendix A)
allows you to select either Equipment (EQPT) or Network (NET) functionality for
the Monitor test jack.
" Procedure
To select either Equipment or Network for the Monitor test jack:
1. From the Main Menu screen, select Control.
2. From the Control screen, select Select Monitor Jack.
3. Select either EQPT (Equipment) or NET (Network) depending on the type of
Monitor test jack that you want to implement.
NET MON EQPT
In
In
In
Out
Out
Out
496-14808
Figure 5-1. Test Jacks
EQPT NET
MON
In
In
Out
Mon Jack: EQPT
Mon Jack: NET
(Selectable)
TERMINAL
EQUIPMENT
(DTE)
INTERNAL
CIRCUITRY
LINE
RECEIVER
LINE
RECEIVER
NETWORK
(Selectable)
Mon Jack: EQPT
Mon Jack: NET
EQPT NET
MON
Out
Out
In
496-14875
Figure 5-2. Test Jack Block Diagram
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Table 5-9. Test Jack Functions
Test Jack Name Function
NET In
(Network In)
A break-in test jack that allows a signal to be inserted toward the
network by external test equipment.
NET Out
(Network Out)
A break-in test jack that interrupts the signal coming from the
network and allows it to be terminated by the external test
equipment.
EQPT In
(Equipment In)
A break-in test jack that allows a signal to be inserted toward the
terminal equipment (DTE) by external test equipment.
EQPT Out
(Equipment Out)
A break-in test jack that interrupts the signal coming from the
terminal equipment (DTE) and allows it to be terminated by the
external test equipment.
MON In
(Monitor In)
A monitor jack that is controlled by the Selectable Test Jack branch
of the menu tree. If it is set to Equipment (the default), this jack
monitors the signal going into the terminal equipment (DTE). If it is
set to Network, this jack monitors the signal going into the network.
MON Out
(Monitor Out)
A monitor jack that is controlled by the Selectable Test Jack branch
of the menu tree. If it is set to Equipment (the default), this jack
monitors the signal coming from the terminal equipment (DTE). If it
is set to Network, this jack monitors the signal coming from the
network.
Test Commands
The test commands enable you to run loopbacks and test patterns on the
DSU/CSU, and to test the front panel LEDs. These tests can help you isolate
areas of trouble if you are having problems with your DSU/CSU.
Use the Test branch of the asynchronous terminal menu tree (see Appendix A) to
access all test commands.
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Monitoring and Testing
Remote Loopback Tests
The Remote Loopback tests enable you to troubleshoot your circuit by sending
the following to a far-end device:
For Networks
H
H
Line loopback up activation sequence for 10 seconds (Line Loopback Up)
Line loopback down activation sequence for 10 seconds (Line Loopback
Down)
For Channels
H
H
V.54 activation sequence to initiate a V.54 Loop 2 (V.54 Loopback Up)
V.54 deactivation sequence to terminate a V.54 Loop 2 (V.54 Loopback
Down)
H
H
ANSI T1.403 (Annex B) activation sequence to initiate a DCLB on the remote
device (FT1 Loopback Up)
ANSI T1.403 (Annex B) deactivation sequence to terminate a DCLB on the
remote device (FT1 Loopback Down)
You cannot perform remote loopbacks if any of the local loopbacks are active. If
you attempt to do so, the error message Invalid Test Combination
appears.
Sending a Line Loopback Up or Down
" Procedure
To send a Line Loopback Up or Down sequence on the network to a far-end
DSU/CSU:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Network & DTE Tests.
3. In the Send Line Loopback field (under Remote Loopbacks), enter either Up
or Down depending on the type of sequence that you want to send.
4. For the Send Line Loopback command, select Send.
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Monitoring and Testing
Sending a V.54 or ANSI FT1 Activation/Deactivation Sequence
" Procedure
To send a V.54 or ANSI FT1 activation or deactivation loopback sequence to the
far-end DSU/CSU:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Sync Data Port Tests.
3. In the Port field (near the top of the screen), enter either 1 or 2 depending on
the synchronous data port that you want to test.
4. In the Send V.54 Loopback field or the Send FT1 Loopback field (under
Remote Loopbacks), enter either Up or Down depending on the type of
sequence that you want to send.
5. For the appropriate command (Send V.54 Loopback or Send FT1 Loopback),
select Send.
Local Loopback Tests
The Local Loopback tests enable you to conduct circuit testing and fault isolation
for the digital line. The supported local loopback tests are:
H
H
H
H
H
H
Line Loopback (LLB)
Payload Loopback (PLB)
DTE Loopback (DLB)
Repeater Loopback (RLB)
Data Channel Loopback (DCLB)
Data Terminal Loopback (DTLB)
NOTE:
DLB is not available when the DTE Drop/Insert (DSX-1) interface is disabled.
The Line Loopback test can be activated and deactivated in response to
commands received over the network interface. The Network Initiated LLB
configuration option controls whether the DSU/CSU responds to the commands
transmitted on the network interface to initiate LLBs (see Appendix C,
Configuration Options).
The Network Initiated DCLB configuration option controls whether the DSU/CSU
responds to inband V.54 commands to initiate DCLB for that port (see
Appendix C, Configuration Options).
Local loopback tests can be aborted (Abort Command) at any time.
No more than two local loopbacks can be active at any one time. An additional
restriction prohibits certain loopbacks from running at the same time. Valid
loopback combinations are identified by YES in Table 5-10.
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Monitoring and Testing
Table 5-10. Valid Loopback Combinations
LLB
N/A
NO
PLB
NO
DLB
YES
YES
N/A
RLB
YES
NO
DCLB
NO
DTLB
YES
LLB
PLB
N/A
YES
NO
NO
YES
YES
YES
NO
NO
YES
NO
YES
DLB
RLB
DCLB
NO
N/A
NO
YES
NO
YES
YES
(on
YES
(on
separate
ports)
separate
ports)
YES
YES
YES
YES
YES
(on
YES
(on
DTLB
separate
ports)
separate
ports)
Starting a Line Loopback
The Line Loopback command (LLB) loops the received signal on the network
interface back to the network without change.
DSU
CSU
NETWORK
INTERFACE
DTE
(DSX-1)
ALL
1s
LLB
ALL 1s
ALL 1s
496-14319-02
PORT 2 PORT 1
" Procedure
To perform a Line loopback:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Network & DTE Tests.
3. For the Line Loopback command (under Local Loopbacks), select Start.
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Monitoring and Testing
Starting a Payload Loopback
The Payload Loopback command (PLB) loops the received signal on the network
interface back to the network. The signal is looped back as close to the DTE
Drop/Insert (DSX-1) port as possible (after it has passed through the framing
circuitry of the DSU/CSU). Framing CRCs and BPVs are corrected.
DSU
CSU
NETWORK
INTERFACE
DTE
(DSX-1)
ALL
1s
PLB
ALL 1s
ALL 1s
496-14316-02
PORT 2 PORT 1
" Procedure
To perform a Payload loopback:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Network & DTE Tests.
3. For the Payload Loopback command (under Local Loopbacks), select Start.
Starting a DTE Loopback
The DTE Loopback command (DLB) loops the received signal on the DTE
Drop/Insert (DSX-1) port back to the DTE without change.
DSU
CSU
NETWORK
INTERFACE
DTE
(DSX-1)
DLB
ALL 1s
496-14317-02
PORT 2
PORT 1
" Procedure
To perform a DTE loopback:
1. From the Main Menu screen, select Test.
2. From the Test screen, select DTE Tests.
3. For the DTE Loopback command (under Local Loopbacks), select Start.
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Monitoring and Testing
Starting a Repeater Loopback
The Repeater Loopback command (RLB) loops the signal being sent to the
network back to the DTE Drop/Insert (DSX-1) and data ports. The signal is
looped back as close to the network interface as possible (after it has passed
through the framing circuitry of the DSU/CSU). Framing CRCs and BPVs are
corrected.
DSU
CSU
NETWORK
INTERFACE
DTE
(DSX-1)
RLB
ALL 1s
496-14318-02
PORT 1
PORT 2
" Procedure
To perform a Repeater loopback:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Network & DTE Tests.
3. For the Repeater Loopback command (under Local Loopbacks), select Start.
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Monitoring and Testing
Starting a Data Channel Loopback
The Data Channel Loopback command (DCLB) loops the data received from the
network interface, for all DS0 channels allocated to the selected port, back to the
network. The loopback occurs after the data passes through the port circuitry but
before it is sent out the data port.
DSU
CSU
NETWORK
INTERFACE
DTE
(DSX-1)
DCLB
DCLB
ALL 1s
ALL 1s
496-14315-02
PORT 2 PORT 1
" Procedure
To perform a Data Channel loopback:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Sync Data Port Tests.
3. In the Port field (near the top of the screen), enter either 1 or 2 depending on
the synchronous data port that you want to test.
4. For the Data Channel Loopback command (under Local Loopbacks), select
Start.
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Starting a Data Terminal Loopback
The Data Terminal Loopback command (DTLB) loops the data received from the
selected port, for all DS0 channels allocated to the port, back out of the port. This
loopback occurs after the data passes through the port circuitry but before it
reaches the T1 framer.
DSU
CSU
ALL 1s
NETWORK
INTERFACE
DTE
(DSX-1)
DTLB
PORT 2
DTLB
PORT 1
496-14314-02
" Procedure
To perform a Data Terminal loopback:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Sync Data Port Tests.
3. In the Port field (near the top of the screen), enter either 1 or 2 depending on
the synchronous data port that you want to test.
4. For the Data Terminal Loopback command (under Local Loopbacks), select
Start.
Aborting Loopbacks
Use the Abort Tests command to stop all loopback tests or any selected loopback
test currently active on the DSU/CSU.
" Procedure
To abort one or more loopback tests:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Abort Tests.
NOTE:
To verify the abort procedure, use the System and Test Status screen in the
Status branch.
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Monitoring and Testing
Test Patterns
Use test pattern commands to send, monitor, and abort test patterns. Available
test patterns are:
H
H
H
QRSS – A quasi-random signal source approximating live data that can be
monitored for logic errors (on the network and the data ports).
1-in-8 – A test pattern consisting of a one (1) followed by seven zeros (on the
network only).
511 – A pseudo-random bit sequence (PRBS) that is 511 bits long (on the
9
data ports only). This is a PRBS 2 –1 test.
Use a monitor command to monitor a QRSS test pattern over all the channels on
the network interface, or to monitor QRSS or 511 test patterns on the channels
allocated to an individual port. A monitor command provides the number of errors
detected in the test pattern (5 digits, maximum 99999).
Only one test pattern can be active at a time on one port. Valid combinations are
identified by YES in Table 5-11.
Table 5-11. Valid Send Test Pattern Combinations
QRSS
(Network)
1-in-8
(Network)
QRSS (Port)
511 (Port)
N/A
NO
NO
NO
QRSS
(Network)
NO
NO
YES (on
separate ports)
N/A
N/A
YES (on
separate ports)
QRSS (Port)
NO
NO
1-in-8
(Network)
NO
N/A
N/A
YES (on
separate ports)
511 (Port)
Sending Network QRSS or Network 1-in-8 Test Patterns
" Procedure
To send a Network QRSS or Network 1-in-8 test pattern:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Network & DTE Tests.
3. In the Send field (under Pattern Tests), enter either QRSS or 1in8 depending
on the type of test pattern that you want to send.
4. For the Send command (under Pattern Tests), select Start.
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Monitoring and Testing
Sending Port QRSS or Port 511 Test Patterns
" Procedure
To send a Port QRSS or Port 511 test pattern:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Sync Data Port Tests.
3. In the Port field (near the top of the screen), enter either 1 or 2 depending on
the synchronous data port that you want to test.
4. In the Send field (under Pattern Tests), enter either QRSS or 511 depending
on the type of test pattern that you want to send.
5. For the Send command (under Pattern Tests), select Start.
Monitoring Network QRSS Test Patterns
" Procedure
To monitor a Network QRSS test pattern:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Network & DTE Tests.
3. For the Monitor QRSS command (under Pattern Tests), select Start.
Monitoring Port QRSS or Port 511 Test Patterns
" Procedure
To monitor a Port QRSS or Port 511 test pattern:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Sync Data Port Tests.
3. In the Port field (near the top of the screen), enter either 1 or 2 depending on
the synchronous data port that you want to test.
4. In the Monitor field (under Pattern Tests), enter either QRSS or 511
depending on the type of test pattern that you want to monitor.
5. For the Monitor command (under Pattern Tests), select Start.
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Monitoring and Testing
Aborting Test Patterns
Use the Abort Tests command to stop all test patterns or any selected test pattern
active on the DSU/CSU.
" Procedure
To abort test patterns:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Abort Tests.
Lamp Test
Use the Lamp Test command to start or stop a test of the DSU/CSU front panel
LEDs.
Starting a Lamp Test
" Procedure
To start a Lamp test:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Device Tests.
3. For the Lamp Test command, select Start.
Aborting a Lamp Test
" Procedure
To abort the Lamp test:
1. From the Main Menu screen, select Test.
2. From the Test screen, select Device Tests.
3. For the Lamp Test command, select Stop.
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Monitoring and Testing
Displaying DSU/CSU Test Status
Use the System and Test Status screen to display the active tests for the
DSU/CSU. Table 5-12 lists these messages.
" Procedure
To display test status:
1. From the Main Menu screen, select Status.
2. From the Status screen, select System and Test Status.
Table 5-12. Test Status Messages
Message
Description
No Test Active
LLB Test Active
PLB Test Active
DLB Test Active
RLB Test Active
No tests are currently active.
The network interface is in Line loopback.
The network interface is in Payload loopback.
The DTE Drop/Insert (DSX-1) port is in DTE loopback.
The DTE Drop/Insert (DSX-1) port is in Repeater
loopback.
DCLB Test Active, Port n
DTLB Test Active, Port n
QRSS Test Active, Network
Port n is in a Data Channel loopback.
Port n is in a Data Terminal loopback.
A QRSS test pattern is being sent on the network
interface.
1–8 Test Active, Network
A 1-in-8 test pattern is being sent on the network
interface.
Mon QRSS Test Active,
Network
A QRSS test pattern is being monitored on the network
interface.
QRSS Test Active, Port n
A QRSS test pattern is being sent to the network on the
channels allocated to port n.
511 Test Active, Port n
A 511 test pattern is being sent to the network on the
channels allocated to port n.
Mon QRSS Test Active,
Port n
A QRSS test pattern is being monitored on the channels
allocated to port n.
Mon 511 Test Active, Port n
DLB Test, External Contact
Lamp Test Active
A 511 test pattern is being monitored on the channels
allocated to port n.
The DTE Drop/Insert (DSX-1) port is being held in DTE
loopback by the external contact.
The Lamp test is currently active.
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Monitoring and Testing
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Asynchronous Terminal Menu
A
The menu tree on the next page shows the structure and relationship of the user
interface screens.
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Asynchronous Terminal Menu
Main
Status
Test
Configuration
Control
Call
Directories
Call
Setup
Select
Monitor Jack
Administer
Password
Reset
Device
Cross Connect
Status
Display
LEDs
Performance
Statistics
Identity
Customer
ID
Select
LEDs
System and
Test Status
Start
Download
DTE Channel
Display
Device
Tests
Sync Data
Port Tests
Network &
DTE Tests
Network
Channel
Display
Port
Assignment
Display
Abort
Tests
Configuration
Edit/Display
Sync Data
Port
Network
Clear
Statistics
Network
DTE
Sync Data
Ports
Copy
Ports
Cross
General
User
Alarms Management
Connect Options Interface & Traps
and
Communication
DTE to
Network
Sync Data
Port
Clear
Assignments
Assignments Assignments
Telnet
Sessions
Ethernet
Port
Communication External
Port
Device
Communication General SNMP
Protocol Management
SNMP NMS
Security
SNMP
Traps
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Technical Specifications
B
Overview
The technical specifications for the standalone DSU/CSUs are listed in Table B-1.
Table B-1. Model 3162 DSU/CSU Technical Specifications (1 of 2)
Specifications
Criteria
POWER REQUIREMENTS
AC Power Module
Refer to the labeling on the AC power module for input
requirements
POWER CONSUMPTION
AND DISSIPATION
16.0 watts, 55.0 Btu per hour at 115 volts (AC power)
DTE DROP/INSERT
(DSX-1) INTERFACE
Physical Interface
Framing Format
Coding Format
DB15 socket
D4, ESF
AMI, B8ZS
DTE Line Equalization
5 selectable ranges from 0 to 655 feet
(0 to 196.5 meters)
Selectable
Send AIS
NETWORK T1 INTERFACE
Physical Interface (USA)
Physical Interface (Canada)
Framing Format
RJ48C
CA81A using adapter cable
D4, ESF
AMI, B8ZS
Coding Format
Line Build-Out (LBO)
ANSI PRM
Bit Stuffing
0.0 dB, –7.5 dB, –15 dB, –22.5 dB
Selectable
AT&T TR 62411
Selectable
Yellow Alarm Generation
LOOPBACKS
Standard
Additional
AT&T TR 54016, AT&T TR 62411, ANSI T1.403.1989
RLB (Repeater Loopback), DLB (DTE Loopback),
V.54 Loop 2 and Loop 3, ANSI T1.403 Annex B
Fractional T1 Loopback
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Technical Specifications
Table B-1. Model 3162 DSU/CSU Technical Specifications (2 of 2)
Specifications
Criteria
PORT INTERFACE
Standards
Rates
EIA 530-A, V.35, RS-449, X.21
Nx64 – 64K-1.536 Mb
Nx56 – 56K-1.344 Mb
APPROVALS
Refer to the product labeling
CLOCKING SOURCES
T1 network interface, Port 1, internal clock, DTE
Drop/Insert (DSX-1) interface or external clock
PHYSICAL DIMENSIONS
Height
Width
Depth
2.13 inches (5.4 cm)
7.63 inches (19.4 cm)
12.13 inches (30.8 cm)
WEIGHT
2.4 pounds (1.1 kg)
ENVIRONMENT
Operating Temperature
Storage Temperature
Relative Humidity Shock and
Vibration
32°F to 122°F (0°C to 50°C)
–4°F to 158°F (–20°C to 70°C)
5%—95% (noncondensing)
Withstands normal shipping and handling
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Configuration Options
C
Overview
The DSU/CSU configuration option tables contain a list of all configuration
options and their available selections. In the tables, the top line of each
configuration option entry indicates the factory default setting.
The configuration options are arranged into functional groups:
H
H
H
H
Network Interface Configuration Options (Table C-1)
DTE Interface Configuration Options (Table C-2)
Sync Data Port Configuration Options (Table C-3)
Cross Connect Configuration Options
— DTE-to-Network Assignment Options (Table C-4)
— Sync Data Port Assignment Options (Table C-5)
General Configuration Options (Table C-6)
H
H
User Interface Configuration Options
— Communication Port Configuration Options (Table C-7)
— External Device Configuration Options (Table C-8)
— Telnet Sessions Configuration Options (Table C-9)
— Ethernet Port Configuration Options (Table C-10)
Alarm and Trap Configuration Options (Table C-11)
Management and Communication Configuration Options
— Communication Protocol Configuration Options (Table C-12)
— General SNMP Management Configuration Options (Table C-13)
— SNMP NMS Security Configuration Options (Table C-14)
— SNMP Traps Configuration Options (Table C-15)
H
H
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Configuration Options
Network Interface Configuration Options
Table C-1. Network Interface Configuration Options (1 of 2)
Line Framing Format: ESF (Factory 1) D4 (Factory 2)
D4 ESF
The framing format to be used on the network interface.
D4 – Configures for the D4 framing format.
ESF – Configures for the Extended Superframe format.
Line Coding Format: B8ZS (Factory 1) AMI (Factory 2)
AMI B8ZS
The line coding format to be used on the network interface.
AMI – Configures for the Alternate Mark Inversion coding format.
B8ZS – Configures for the Bipolar 8 Zero Suppression coding format.
Bit Stuffing: 62411
62411 Disable
Determines when bit stuffing is performed to meet the ones density requirements for
data transmission on the network.
62411 – Specifies that a one be inserted in the data stream after 15 consecutive zeros
or when the density of ones falls below 12.5% (complies with AT&T TR 62411).
Disable – Disables bit stuffing so that ones density is not enforced.
NOTES: – To comply with Canadian DOC CS-03 regulations, equipment installed
in Canada must be configured to select 62411.
– This configuration option is only available if the network interface line
coding format is set to AMI.
Line Build Out (LBO): 0.0
0.0 –7.5 –15 –22.5
The line build out (LBO), in decibels, for the signal transmitted to the network.
Management Link: Disable
Enable Disable
Specifies whether Facility Data Link (FDL) is enabled. Selecting Enable allows SNMP or
Telnet traffic to flow over the
4 kbps data link provided by FDL. Running SNMP or Telnet over FDL requires an
end-to-end FDL connection and cannot be terminated within the network.
Enable – Enables the FDL management link for SNMP or Telnet.
Disable – Disables the FDL management link.
NOTES: – This configuration option is only available if the framing format is set to
ESF.
– This configuration option is not available if EDL is enabled.
– If the local DSU/CSU’s FDL is enabled, the remote DSU/CSU’s FDL
must also be enabled.
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Configuration Options
Table C-1. Network Interface Configuration Options (2 of 2)
ANSI Performance Report Messages: Disable
Enable Disable
Specifies whether ANSI T1.403 compliant performance report messages (PRMs) are
generated.
Enable – Generates and sends ANSI PRMs over the FDL every second.
Disable – Prevents the DSU/CSU from generating ANSI PRMs.
NOTE: This configuration option is only available if the framing format is set to
ESF.
Network Initiated LLB: Enable
Enable Disable
Allows initiation and termination of the LLB to be controlled by the receipt of
LLB-Actuate and LLB-Release commands from the network (or remote DSU/CSU).
Enable – Causes the DSU/CSU to enter an LLB (if the DSU/CSU can perform an LLB
in its current state) and to cause an LLB-Release command to terminate the LLB.
Disable – Causes the DSU/CSU to ignore LLB-Actuate and LLB-Release commands
(the DSU/CSU is not in compliance with ANSI T1.403 and AT&T TR 62411).
NOTE: If this configuration option is enabled, the DSU/CSU recognizes the in-band
LLB-Actuate and LLB-Release codes specified by AT&T as well as the
bit-oriented FDL messages specified by ANSI (for ESF only).
Network Initiated PLB: Enable
Enable Disable
Allows initiation and termination of the PLB to be controlled by the receipt of
PLB-Actuate and PLB-Release commands from the network (or remote DSU/CSU).
Enable – Causes the DSU/CSU to enter a PLB (if the DSU/CSU can perform a PLB in
its current state) and to cause a PLB-Release command to terminate the PLB.
Disable – Causes the DSU/CSU to ignore PLB-Actuate and PLB-Release commands
(the DSU/CSU is not in compliance with ANSI T1.403 and AT&T TR 54016).
NOTES: – If this configuration option is enabled, the DSU/CSU recognizes the
in-band PLB-Actuate and PLB-Release codes specified by AT&T as well
as the bit-oriented FDL messages specified by ANSI.
– This configuration option is only available if the network interface
framing is set to ESF.
Circuit Identifier: Text Field
Text Field Clear
Specifies the transmission vendor’s circuit identifier for the purpose of facilitating
troubleshooting. The network circuit identifier is an ASCII text string that may be up to
255 characters in length.
Text Field – Allows you to edit or display the network circuit identifier.
Clear – Allows you to clear the network circuit identifier. The network circuit identifier is
set to a null string.
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Configuration Options
DTE Interface Configuration Options
Table C-2. DTE Interface Configuration Options (1 of 2)
Interface Status: Enable
Enable Disable
Enables the use of the DTE Drop/Insert (DSX-1) port.
Enable – Allows the use of the DTE Drop/Insert (DSX-1) interface.
Disable – Prohibits the use of the DTE Drop/Insert (DSX-1) interface.
NOTE: When this configuration option is disabled, you cannot display or configure
any other DTE Interface configuration options. If the clock source
configuration option is set to DTE, it is changed to NET.
Line Framing Format: ESF (Factory 1) D4 (Factory 2)
D4 ESF
Designates the framing format for the DTE Drop/Insert (DSX-1) interface.
D4 – Configures for the D4 framing format.
ESF – Configures for the Extended Superframe framing format.
Line Coding Format: B8ZS (Factory 1) AMI (Factory 2)
AMI B8ZS
Designates the line coding format to be used on the DTE Drop/Insert (DSX-1) interface.
AMI – Uses the Alternate Mark Inversion coding format.
B8ZS – Uses the Bipolar 8 Zero Suppression coding format.
Line Equalization: 0—133
0—133 133—266 266—399 399—533 533—655
Specifies the DTE line equalization compensation parameters that permit a standard
DTE Drop/Insert (DSX-1) signal to be delivered over a distance of up to 655 feet.
DTE LB on External Contact: Disable
Next Enable Disable
Allows the control of a DTE Loopback (DLB) by an external contact on the DTE
Drop/Insert (DSX-1) interface.
Enable – Allows the DSU/CSU to begin a DLB when the external contact is closed. The
DSU/CSU remains in DLB as long as the contact remains closed.
Disable – Prevents the state of the external contact from affecting the operation of DLB.
Send All Ones on DTE Failure: Enable
Enable Disable
Specifies the action to take on the signal transmitted to the network when a valid signal
cannot be recovered from the DTE Drop/Insert (DSX-1) interface (due to an LOS, OOF,
or AIS condition).
Enable – Sends all ones on the DS0 channels allocated to the network interface when
an LOS, AIS, or OOF condition occurs on the DTE Drop/Insert (DSX-1) interface.
Disable – Passes the data unchanged to the network interface channels.
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Configuration Options
Table C-2. DTE Interface Configuration Options (2 of 2)
DTE Signaling
D01 D02 D03 D04 D05 D06 D07 D08 D09 D10 D11 D12 D24
RBS RBS RBS RBS RBS RBS RBS RBS RBS RBS RBS RBS RBS
Specifies which DS0 channels from the DTE Drop/Insert (DSX-1) interface are voice
channels and should pass Robbed Bit Signaling information to the network interface.
Line 1 displays the 24 channels for the DTE Drop/Insert (DSX-1) interface. Line 2
displays whether the DS0 channel indicated in Line 1 is a voice or data channel.
Possible values for Line 2 are:
Value Meaning
RBS
This DS0 channel is a voice channel carrying RBS information. When this DS0
channel is assigned to a network DS0 channel, RBS information is preserved across
the connection.
None
This DS0 channel is a data channel that does not contain RBS information.
Signaling is not preserved across the connection.
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Configuration Options
Sync Data Port Configuration Options
Table C-3. Sync Data Port Configuration Options (1 of 5)
Port Type: E530 (Factory 1) V.35 (Factory 2)
E530 V.35 RS449 X.21
Allows selection of the data port interface type.
E530 – Configures the port as an EIA-530-A compatible interface. EIA-530-A DTEs can
be directly connected to a port connector on the back of the DSU/CSU.
V.35 – Configures the port as a V.35 compatible interface. V.35 DTEs can be connected
to a port connector using an EIA-530A-to-V.35 adapter cable.
RS449 – Configures the port as an RS-449 compatible interface. RS-449 DTEs can be
connected to a port connector using an EIA-530-A-to-RS-449 adapter cable.
X.21 – Configures the port as an X.21 compatible interface. X.21 DTEs can be
connected to a port connector using an EIA-530-A-to-X.21 adapter cable.
NOTE: If this configuration option is set to X.21, set the Send All Ones
configuration option to RTS or Disable.
Port Base Rate: Nx64
Nx64 Nx56
Allows selection of the base rate for the data port. The data rate for the port is a multiple
(from 1 to 24) of the base rate specified with this configuration option.
Nx64 – Sets the base rate for this port to 64 kbps. The data rate is Nx64 kbps, where N
is a number from 1 to 24.
Nx56 – Sets the base rate for this port to 56 kbps. The data rate is Nx56 kbps, where N
is a number from 1 to 24.
Transmit Clock Source: Internal
Internal External
Specifies whether the transmitted data for the port is clocked using an internal clock
provided by the DSU/CSU (synchronized to the clock source specified by the clock
source configuration option) or an external clock provided by the DTE connected to the
port. If an external clock is used, it must be synchronized to the same clock source as
the DSU/CSU.
Internal – Indicates the clock is provided internally by the DSU/CSU on the TXC
interchange circuit DB (CCITT 114).
External – Indicates the clock is provided externally by the DTE on the XTXC
interchange circuit DA (CCITT 113). Use this selection if the clock source is set to this
data port.
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Configuration Options
Table C-3. Sync Data Port Configuration Options (2 of 5)
Embedded Data Link: Disable
Enable Disable
Specifies whether Embedded Data Link (EDL) is enabled for a particular port. If EDL is
enabled, then 8 kbps of the total bandwidth allocated for this port is not available to the
synchronous data port. For example, if the port rate is 256 kbps (4 DS0 channels
allocated) and EDL is enabled, then only 248 kbps is available to the port. EDL provides
the following: detection of frame synchronization, CRC of the data stream (excluding the
8 kbps EDL), and an in-band data link (4 kbps) between the local and remote units. The
4 kbps in-band data link can be used for performance report messages and as an IP
link for SNMP or Telnet sessions.
Enable – Indicates the port’s EDL is enabled.
Disable – Indicates the port’s EDL is disabled.
NOTES: – If the local DSU/CSU’s EDL is enabled, then the remote DSU/CSU’s
EDL must also be enabled.
– EDL is not recommended for networks in which data is examined for
routing purposes (e.g., frame relay, x.25).
EDL Management Link: Disable
Enable Disable
Specifies whether the EDL management link is enabled for a particular port. Selecting
Enable allows SNMP or Telnet traffic to flow over the 4 kbps in-band data link provided
by EDL.
Enable – Enables the port’s EDL management link.
Disable – Disables the port’s EDL management link.
NOTES: – This configuration option is not available if EDL is disabled or FDL is
enabled.
– If the local DSU/CSU’s EDL is enabled, then the remote device’s EDL
must also be enabled.
Invert Transmit Clock: Disable
Enable Disable
Specifies whether the clock supplied by the DSU/CSU on the TXC interchange circuit
DB (CCITT 114) is phase inverted with respect to the Transmitted Data interchange
circuit BA (CCITT 103). This configuration option is useful when long cable lengths
between the DSU/CSU and the DTE are causing data errors.
Enable – Indicates TXC supplied by the DSU/CSU on this port is phase inverted.
Disable – Indicates TXC supplied by the DSU/CSU on this port is not phase inverted.
Invert Transmit and Received Data: Disable
Enable Disable
Specifies whether the port’s transmitted data and received data are logically inverted
before being transmitted or received. This configuration option is useful for applications
where HDLC data is being transported. Inverting the data ensures that the density
requirements for the network interface are met.
Enable – Indicates the transmitted data and received data for this port are inverted.
Disable – Indicates the transmitted data and received data for this port are not inverted.
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Configuration Options
Table C-3. Sync Data Port Configuration Options (3 of 5)
Send All Ones on Data Port Not Ready: Both
Disable DTR RTS Both
Specifies the conditions on the data port that determine when valid data is not being
sent from the DTE. When this condition is detected, all ones are sent to the network on
the DS0 channels allocated to the port.
Disable – Disables the monitoring of interchange circuits from the DTE connected to
this port.
DTR – Monitors the DTE Ready interchange circuit CD (CCITT 108/1/2). When DTR is
interrupted, all ones are sent to the network.
RTS – Monitors the Request-to-Send interchange circuit CA (CCITT 105). When RTS is
interrupted, all ones are sent to the network.
Both – Monitors both DTR and RTS. If either is interrupted, all ones are sent to the
network.
NOTE: If the Port Type configuration option is set to X.21, set this configuration
option to RTS or Disable.
Action on Network Yellow Alarm: Halt
None Halt
Specifies the action taken on this port when a Yellow Alarm is received on the network
interface.
None – Makes the data port unaffected by Yellow Alarms received on the network
interface.
Halt – Stops the transmission of data on the port and disables the data port when
Yellow Alarms are received on the network interface. When Yellow Alarms are received,
all ones are sent on the Received Data interchange circuit BB (CCITT 104). The
Clear-to-Send interchange circuit CB (CCITT 106) is interrupted.
Network Init. Data Channel Loopback: Disable (Factory 1) Both (Factory 2)
Disable V.54 FT1 Both
Allows the initiation and termination of a Data Channel Loopback (V.54 loop 2) by the
receipt of a V.54 DCLB-actuate sequence or DCLB-release sequence from the network
or far-end device. The sequences may be either V.54 or FT1 (ANSI) compliant
sequences.
Disable – Ignores the DCLB-actuate and DCLB-release sequences for this port.
V.54 – Enables DCLB-actuate and DCLB-release sequences that comply with the V.54
standard for ‘‘Inter-DCE signaling for point to point circuits.”
FT1 – Enables DCLB-actuate and DCLB-release sequences that comply with the ANSI
T1.403, Annex B standard for ‘‘In-band signaling for fractional-T1 (FT1) channel
loopbacks.”
Both – Enables DCLB-actuate and DCLB-release sequences that comply with either
the ANSI or V.54 standard. The type of actuate and release sequences do not have to
match.
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Configuration Options
Table C-3. Sync Data Port Configuration Options (4 of 5)
Port (DTE) Initiated Loopbacks: Disable (Factory 1) Both (Factory 2)
Disable DTLB DCLB Both
Allows the initiation and termination of a local Data Terminal Loopback (DTLB) or
remote Data Channel Loopback (DCLB) by the DTE connected to this port. (DTLB is
equivalent to a V.54 loop 3, and DCLB is equivalent to a V.54 loop 2.) Control of these
loopbacks is through the DTE interchange circuits as specified by the V.54 standard.
Disable – Disables control of local DTLBs and remote DCLBs by the DTE connected to
this port.
DTLB – Gives control of the local DTLBs for this port to the DTE attached to this port.
This loopback is controlled by the Local Loopback interchange circuit LL (CCITT 141).
DCLB – Gives control of the remote DCLBs for the far-end port connected to this port to
the DTE attached to this port. This loopback is controlled by the Remote Loopback
interchange circuit RL (CCITT 140). The far-end equipment must support in-band V.54
loopbacks.
Both – Gives control of local DTLBs and remote DCLBs to the DTE connected to this
port.
Near-End Performance Statistics: Disable
Disable Maintain Send Both
Specifies whether the DSU/CSU maintains near-end performance statistics and sends
performance report messages (PRMs) for a particular port.
Disable – Disables near-end performance statistics and does not send PRMs.
Maintain – Maintains near-end performance statistics for this port.
Send – Sends PRMs over the port’s EDL every second. Each PRM contains the
performance statistics for the previous 4 seconds.
Both – Maintains near-end performance statistics and sends PRMs over the port’s EDL.
NOTES: – This configuration option is not available if EDL is disabled.
– If the local DSU/CSU is configured to send near-end performance
statistics, then the remote device must be configured to maintain
far-end performance statistics.
Far-End Performance Statistics: Disable
Disable Maintain
Specifies whether to monitor for far-end performance report messages (PRMs) and
maintain far-end performance registers for a particular port.
Disable – Disables far-end performance statistics.
Maintain – Monitors the port’s EDL for PRMs and maintains far-end performance
statistics.
NOTES: – This configuration option is not available if EDL is disabled.
– If the local DSU/CSU is configured to maintain far-end performance
statistics, then the remote device must be configured to send near-end
performance statistics.
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Configuration Options
Table C-3. Sync Data Port Configuration Options (5 of 5)
Excessive Error Rate Threshold: 10E-4
10E-4 10E-5 10E-6 10E-7 10E-8 10E-9
Sets the error rate threshold that determines when an Excessive Error Rate (EER)
condition is declared for a particular port. The error rate selected by this configuration
option is determined by the ratio of the number of CRC5 errors to the total number of
bits received over a set period of time.
10E-4 – 10E-4 Threshold. For example, at 1536 kbps, EER is declared if more than
1,535 CRC5 errors are detected in a 10-second period. It is cleared with less than
1,536 errors in ten seconds.
10E-5 – 10E-5 Threshold. For example, at 1536 kbps, EER is declared if more than
921 CRC5 errors are detected in a 60-second period. It is cleared with less than
922 errors in sixty seconds.
10E-6 – 10E-6 Threshold. For example, at 1536 kbps, EER is declared if more than
92 CRC5 errors are detected in a 60-second period. It is cleared with less than 93 errors
in sixty seconds.
10E-7 – 10E-7 Threshold. For example, at 1536 kbps, EER is declared if more than
9 CRC5 errors are detected in a 60-second period. It is cleared with less than 10 errors
in sixty seconds.
10E-8 – 10E-8 Threshold. For example, at 1536 kbps, EER is declared if more than
41 CRC5 errors are detected in three 15-minute intervals. It is cleared with less than
42 errors in three 15-minute intervals.
10E-9 – 10E-9 Threshold. For example, at 1536 kbps, EER is declared if more than
4 CRC5 errors are detected in three 15-minute intervals. It is cleared with less than
5 errors in three 15-minute intervals.
NOTE: This configuration option is not available if EDL is disabled.
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Configuration Options
Cross Connect Configuration Options
The Cross Connect configuration options are divided into two tables as follows:
H
H
DTE-to-Network Assignment Options (Table C-4)
Sync Data Port Assignment Options (Table C-5)
DTE-to-Network Assignment Options
Table C-4. DTE-to-Network Assignment Options
DTE to Network Assignments
N01 N02 N03 N04 N05 N06 N07 N08 N24
DTE01 DTE02 DTE03 DTE04 DTE05 DTE06 DTE07 DTE08 DTE24
Assigns DS0 channels from the DTE Drop/Insert (DSX-1) interface to the network
interface.
Line 1 displays the 24 channels for the network interface. Line 2 displays what is
allocated to the DS0 channel indicated in Line 1. Possible values for Line 2 are:
Value
Meaning
Available This DS0 channel is not allocated. You can modify this value on this
screen.
Assigned This DS0 channel is allocated to a synchronous data port. You
cannot modify this value on this screen.
DTEnn
This DS0 channel is allocated to the DTE Drop/Insert (DSX-1)
interface DS0 channel nn, where nn is a number from 01 to 24. You
can modify this value on this screen.
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Configuration Options
Sync Data Port Assignment Options
Table C-5. Sync Data Port Assignment Options (1 of 3)
Sync Data Port Assignments
Assign To: Network
Network DTE Port
Allows you to assign a synchronous data port to DS0 channels on either the network
interface, the DTE Drop/Insert (DSX-1) interface, or another port.
Network – Assigns this port to DS0 channels on the network interface.
DTE – Assigns this port to DS0 channels on the DTE Drop/Insert (DSX-1) interface. If
the DTE Drop/Insert (DSX-1) interface is disabled, this selection does not appear.
Port – Assigns this port to another port. Use this feature to designate a port as a
backup port. You can attach an external backup device to a backup port and manually
assign the selected port to the backup port (i.e., route data from the selected port to the
backup port). When a port is assigned to another port, DSR is turned on. EDL does not
operate when a synchronous data port is assigned to another synchronous data port.
Therefore, if EDL is enabled, it is ignored.
NOTE: Changing this configuration option from one T1 interface to the other
(Network or DTE) deallocates all DS0 channels assigned to the previous
interface.
Sync Data Port Assignments
Assign By: Block
Block ACAMI Channel
If you select NET or DTE using the Assign To configuration option, this configuration
option designates the method for assigning DS0 channels to the destination T1
interface.
Block – Allocates DS0 channels to this port by the block method.
ACAMI – Allocates DS0 channels to this port by the Alternate Channel Alternate Mark
Inversion method. The difference between block and ACAMI is that the number of
channels allocated with ACAMI is double the number needed for the port rate. With
ACAMI, every alternate DS0 channel does not carry data from the port but always
transmits and receives all ones.
Channel – Allocates DS0 channels to this port by the individual channel method.
NOTE: Changing this configuration option from one method to another (Block,
ACAMI, or Channel) deallocates all DS0 channels assigned to either the
network interface or the DTE Drop/Insert (DSX-1) interface.
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Configuration Options
Table C-5. Sync Data Port Assignment Options (2 of 3)
Sync Data Port Assignments
Port Data Rate: 384
64 128 192 256 320 384 448 512 576 640 704 768 832
896 960 1024 1088 1152 1216 1280 1344 1408 1472 1536
OR
56 112 168 224 280 336 392 448 504 560 616 672 728
784 840 896 952 1008 1064 1120 1176 1232 1288 1344 Prev
Designates the data rate for the port. Available selections depend on the current base
rate configured for the port. The factory default for Nx64 is 384 kbps, and Nx56 is
336 kbps.
NOTES: – This selection is not available if the individual channel allocation method
(Channel) is selected using the Assign By field.
– Changing this selection from one rate to another deallocates all DS0
channels assigned to either the network interface or the DTE
Drop/Insert (DSX-1) interface.
– When you enable EDL, 8 kbps of the total bandwidth allocated for this
port is not available to the synchronous data port. For example, if you
select 256 kbps and EDL is enabled, only 248 kbps are available.
– When you enable EDL on a synchronous data port and the clock source
is set to that synchronous data port, the external device must provide a
clock of 8 kbps less than the expected data port rate. For example, if
you select 64 kbps, the external clock source must supply a 56 kbps
clock signal.
Sync Data Port Assignments
Assign To: Port
Portn: Pn
Allows you to assign this port to another port.
Possible values are:
Value Meaning
Available This DS0 channel is not allocated. You can modify this value on this screen.
Assigned This DS0 channel is allocated to the network interface or the DTE
Drop/Insert (DSX-1) interface. You cannot modify this value on this screen.
Pn
This DS0 channel is allocated to Port n, where n is 1 or 2. You can modify this
value on this screen.
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Configuration Options
Table C-5. Sync Data Port Assignment Options (3 of 3)
Sync Data Port Assignments
N01 N02 N03 N04 N05 N06 N07 N08 N24
Pn Pn Pn Pn Pn Pn Pn Pn Pn
OR
D01 D02 D03 D04 D05 D06 D07 D08 D24
Pn Pn Pn Pn Pn Pn Pn Pn Pn
Designates the DS0 channel to allocate to this port, N01–N24 for the network interface
and D01–D24 for the DTE Drop/Insert (DSX-1) interface.
Line 1 displays the 24 channels for the network interface or the DTE Drop/Insert
(DSX-1) interface. Line 2 displays what is allocated to the DS0 channel indicated in
Line 1. Possible values are:
Value Meaning
Nnn
This DS0 channel is allocated to the network interface DS0 channel n, where n
is a number from 1 to 24. You cannot modify this value on this screen.
Dnn
This DS0 channel is allocated to the DTE Drop/Insert (DSX-1) interface DS0
channel n, where n is a number from 1 to 24. You can modify this value on this
screen.
Pn
This DS0 channel is allocated to port n, where n is 1 or 2. You can modify this
value on this screen for this port only.
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Configuration Options
General Configuration Options
Table C-6. General Configuration Options (1 of 2)
Generate Yellow Alarm Signals: Enable
Enable Disable
Determines whether the DSU/CSU generates Yellow Alarm signals on the network and
DTE Drop/Insert (DSX-1) interfaces.
NOTE: This configuration option is not available if the DTE Drop/Insert (DSX-1)
Interface is disabled. If the DTE Drop/Insert (DSX-1) interface is disabled,
the DSU/CSU always generates the Yellow Alarm signal on the network
interface.
Enable – Generates the Yellow Alarm signal for both the network and DTE Drop/Insert
(DSX-1) interfaces.
Disable – Disables the Yellow Alarm signal. When this configuration option is disabled,
Yellow Alarm conditions on the network interface cause an AIS signal to be transmitted
on the DTE Drop/Insert (DSX-1) interface.
NOTE: When this configuration option is disabled, the DTE equipment connected
to the DTE Drop/Insert (DSX-1) interface is responsible for generation of
the Yellow Alarm signal on the network interface. In this case, the interface
port marked DTE must only be connected to an FCC Part 68 Registered
(for USA) and Canadian DOC Certified (for Canada) Digital Service Unit or
System, such as PBX, with a DTE Drop/Insert (DSX-1) interface. Failure to
do so is a violation of FCC Rules or DOC Regulations.
Self Test: Enable
Enable Disable
Specifies whether the DSU/CSU performs a device self-test at power-up and after a
device reset.
Enable – Enables a self-test.
Disable – Disables the self-test.
Test Timeout: Enable
Enable Disable
Specifies whether user-initiated loopback and pattern tests have durations that are
specified by the Test Duration configuration option.
Enable – Loopback and pattern tests initiated on the DSU/CSU have specified
durations.
Disable – Disables test timeout. The tests are terminated manually.
NOTE: For DSU/CSUs that are remotely managed through an inband data stream
such as EDL or FDL, the recommended setting is Enable. If tests are
inadvertently left in the active state, the Enable setting will allow the test to
timeout (terminate) after a specified time.
Test Duration: 10
1 to 120 minutes
Specifies the duration (1 to 120 minutes) of user-initiated loopback and pattern tests.
(The Test Timeout configuration option must be set to Enable.)
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Configuration Options
Table C-6. General Configuration Options (2 of 2)
Primary Clock Source: Network
Network DTE Internal External Port 1
Specifies the master clock source for the DSU/CSU. This selection synchronizes all
internal timing and external interface clocks. The clock rate(s) for the external timing
interfaces are independent of the input rate for the master clock. Failure of the clock
specified by the clock source selection results in automatic fallback to internal clock.
Network – Configures the network interface as the master clock source.
DTE – Configures the DTE Drop/Insert (DSX-1) interface as the master clock source.
This selection is not available if the DTE Drop/Insert (DSX-1) interface is disabled. If the
DTE Drop/Insert (DSX-1) interface is disabled after making this selection, the master
clock source is changed to Network.
Internal – Configures the internal clock as the master clock source.
External – Configures an external clock (provided through the Clock In connector) as
the master clock source.
Port 1 – Configures Port 1 as the master clock source. This is the only synchronous
data port you can use for the master clock. If you enable EDL if for Port 1 and the
DSU/CSU Clock Source is set to Port 1, the external device must provide clocking of 8
kbps less than the expected data port rate. For example, if you select 64 kbps, the
external clock must supply a 56 kbps clock signal.
External Clock Rate (KHz): 1544
2048 1544
8
Specifies the clock rate when the master clock source is configured for external clock.
This configuration option does not appear when the clock source is not an external
clock.
2048 – Sets the input rate of the external clock to 2,048 kHz.
1544 – Sets the input rate of the external clock to 1,544 kHz.
8 – Sets the input rate of the external clock to 8 kHz.
NOTE: External clock rate 2,048 kHz does not imply E1 compatibility.
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Configuration Options
User Interface Configuration Options
The User Interface configuration options are divided into four tables as follows:
H
H
H
H
Communication Port Configuration Options (Table C-7)
External Device Configuration Options (Table C-8)
Telnet Sessions Configuration Options (Table C-9)
Ethernet Port Configuration Options (Table C-10)
Communication Port Configuration Options
Table C-7. Communication Port Configuration Options (1 of 3)
Port Use: Terminal
Mgmt ASCII Terminal
Specifies how the communication port is used.
Mgmt – Configures the communication port as the link to an SNMP or Telnet system.
ASCII – Configures the communication port as an ASCII port supporting ASCII alarm
messages.
Terminal – Configures the communication port as the interface to an async terminal.
Port Type: Asynchronous
Asynchronous Synchronous
Specifies whether the communication port uses synchronous or asynchronous
operation when it is configured as the SNMP or Telnet management link.
Asynchronous – Configures the communication port for asynchronous operation.
Synchronous – Configures the communication port for synchronous operation.
NOTE: This configuration option is not available if the Port Use configuration option
is set to ASCII or Term. In these cases, the communication port is always
asynchronous.
Clock Source: Internal
Internal External
Specifies whether the communication port uses internal or external clocking when it is
configured for synchronous operation.
Internal – Configures the communication port for internal clocking.
External – Configures the communication port for external clocking.
NOTE: This configuration option is not available if the Port Type configuration
option is set to Asynchronous.
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Configuration Options
Table C-7. Communication Port Configuration Options (2 of 3)
Data Rate: 9.6
1.2 2.4 4.8 9.6 14.4 19.2 38.4
Configures the bit rate for the communication port.
1.2 – Sets the bit rate to 1200 bps (for asynchronous operation only).
2.4 – Sets the bit rate to 2400 bps.
4.8 – Sets the bit rate to 4800 bps.
9.6 – Sets the bit rate to 9600 bps.
14.4 – Sets the bit rate to 14,400 bps.
19.2 – Sets the bit rate to 19,200 bps.
38.4 – Sets the bit rate to 38,400 bps.
NOTE: This configuration option is not available if the communication port is
configured for synchronous operation and the clock source is external.
Character Length:
8
7
8
Configures the character length (7 or 8 bits) for the communication port.
NOTES: – This configuration option must be set to 8 if the communication port is
used as the network communication link.
– This configuration option is not available if the communication port is
configured for synchronous operation.
Parity: None
None Even Odd
Configures the parity (none, even, or odd) for the communication port.
NOTE: This configuration option is not available if the communication port is
configured for synchronous operation.
Stop Bits:
1.5
1
1
2
Configures the number of stop bits (1, 1.5, or 2) for the communication port.
NOTE: This configuration option is not available if the communication port is
configured for synchronous operation.
Ignore Control Leads: Disable
Disable DTR
Specifies whether the DSU/CSU ignores the state of the Data Terminal Ready (DTR)
input to the communication port.
Disable – The control leads are treated in the standard manner.
DTR – DTR is ignored.
NOTE: This configuration option is not available if the communication port is
configured for synchronous operation.
Password Required: Disable
Enable Disable
Activates a password prompt that prevents access until a password is entered.
Enable – Prompts the communications port user to enter a password.
Disable – Does not require a password.
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Configuration Options
Table C-7. Communication Port Configuration Options (3 of 3)
Inactivity Timeout: Disable
Enable Disable
Specifies whether the communication port disconnects after a period of inactivity
specified by the Disconnect Time configuration option.
Enable – The communication port disconnects after the period of inactivity specified by
the Disconnect Time configuration option.
Disable – The communication port does not disconnect due to inactivity.
Disconnect Time:
1 to 60 minutes
5
Specifies the period of time (1 to 60 minutes) before the communication port
disconnects due to inactivity. (The Inactivity Timeout configuration option must be set to
Enable.)
External Device Configuration Options
Table C-8. External Device Configuration Options (1 of 3)
External Device Commands: Disable
Disable AT Other
Specifies the communication port’s external device commands. If this configuration
option is disabled, no commands are sent out the communication port. Select AT to
have standard attention (AT) commands sent out the communication port to control the
external device. Select Other to configure the connect prefix, the connect indication
string, the escape sequence, the escape sequence delay, and the disconnect string.
Disable – Allows no commands to be sent out the communication port.
AT – Allows standard AT commands to be sent out the communication port.
Other – Allows user-configurable commands to be sent out the communication port.
NOTES: – This configuration option is not available if the communications port is
disabled.
– Carrier Detect (CD) is used to detect that the external device’s
connection is lost. Therefore, do not allow the CD lead to be forced on
by the external device.
– The external device should be strapped to ignore Data Terminal Ready
(DTR).
Dial-In Access: Disable
Enable Disable
Allows dial-in access to the DSU/CSU through an external device that is connected to
the communication port.
Enable – Allows dial-in access to the DSU/CSU.
Disable – Prevents dial-in access. Incoming calls to the DSU/CSU are not answered.
NOTE: To enable Dial-In, the external device must be configured for automatic
answer and the External Device Commands configuration option must be
enabled.
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Configuration Options
Table C-8. External Device Configuration Options (2 of 3)
Connect Prefix: Text Field
Text Field Clear
Specifies the connect prefix to the dial directory phone number. When you make a
connection or the DSU/CSU automatically makes a connection (dial-out alarms or traps)
through the communication port, the connect prefix and the dial directory phone number
are used to establish the connection. The connect prefix is an ASCII text string and may
be up to 20 characters in length. If the connect prefix is NULL, then no connect prefix is
used.
Text Field – Allows you to edit or display the connect prefix.
Clear – Allows you to clear the connect prefix. The connect prefix is set to a null string.
NOTE: This configuration option is not available if the External Device Commands
configuration option is set to AT.
Connect Indication String: Text Field
Text Field Clear
Specifies the communication port’s connect indication string. When you make a
connection or the DSU/CSU automatically makes a connection (dial-out alarms or traps)
through the communication port, this string determines that the connection has been
established. The connect indication string is an ASCII text string and may be up to 20
characters in length. If the connect indication string is not received within 1 minute, it will
time-out the connection. If the connect indication string is NULL, the communication
port’s receive data stream is not searched and a transition in the Carrier Detect (CD)
lead is used to determine that a connection has been established.
Text Field – Allows you to edit or display the case-sensitive connect indication string.
Clear – Allows you to clear the connect indication string. The connect indication string is
set to a null string.
NOTE: This configuration option is not available if the External Device Commands
configuration option is set to AT.
Escape Sequence: Text Field
Text Field Clear
Specifies the communication port’s escape sequence. Once the external device
connection has been established, either you or the DSU/CSU can command the
external device to disconnect. Before doing so, you may need to send the escape
sequence out to switch the external device into command mode. The escape sequence
is an ASCII text string and may be up to 20 characters in length. If the escape sequence
is NULL, no escape sequence is sent out.
Text Field – Allows you to edit or display the escape sequence.
Clear – Allows you to clear the escape sequence. The escape sequence is set to a null
string.
NOTE: This configuration option is not available if the External Device Commands
configuration option is set to AT.
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Configuration Options
Table C-8. External Device Configuration Options (3 of 3)
Escape Sequence Delay (sec): None
None 0.2 0.4 0.6 0.8 1.0
Specifies the delay used while sending the communication port escape sequence. Use
the communication port escape delay to specify the delay before sending the first
character of the escape sequence and the delay after the last character of the escape
sequence. During the delay, no data is sent out the communication port.
None – No communication port escape sequence delay.
X.Xs – The delay used during the communication port escape sequence (where X.X is
0.2, 0.4, 0.6, 0.8, or 1.0 seconds).
NOTES: – This configuration option is not available if the External Device
Commands configuration option is set to AT.
– Escape Sequence Delay must be configured for a delay greater than or
equal to the escape guard time required by the external device.
Disconnect String: Text Field
Text Field Clear
Specifies the communication port’s disconnect string. The communication port’s
disconnect string is sent to the external device if either you or the DSU/CSU wants to
command the external device to disconnect. The external device must be in command
mode before this command can be sent, so the escape sequence will always be sent
before the disconnect string. The disconnect string is an ASCII text string and may be
up to 20 characters in length. If the disconnect string is NULL, then no disconnect string
is sent out.
Text Field – Allows you to edit or display the disconnect string.
Clear – Allows you to clear the disconnect string. The disconnect string is set to a null
string.
NOTE: This configuration option is not available if the External Device Commands
configuration option is set to AT.
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Configuration Options
Telnet Sessions Configuration Options
Table C-9. Telnet Sessions Configuration Options
Telnet Session: Disable
Enable Disable
Specifies whether the DSU/CSU responds as a server to Telnet session requests.
Enable – The DSU/CSU responds to Telnet session requests.
Disable – The DSU/CSU does not respond to Telnet session requests.
Password Required: Disable
Enable Disable
Specifies whether a password is required for Telnet access.
Enable – A password is required for Telnet access.
Disable – A password is not required for Telnet access.
Inactivity Timeout: Disable
Enable Disable
Specifies whether the Telnet session disconnects after a period of inactivity specified by
the Disconnect Time configuration option.
Enable – The Telnet session disconnects after the period of inactivity specified by the
Disconnect Time configuration option.
Disable – The Telnet session does not disconnect due to inactivity.
Disconnect Time:
1 to 60 minutes
5
Specifies the period of time (1 to 60 minutes) before the Telnet session disconnects due
to inactivity. (The Inactivity Timeout configuration option must be set to Enable.)
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Configuration Options
Ethernet (10BaseT) Port Configuration Options
Table C-10. Ethernet Port Configuration Options
Port Use: Version 2
Next 802.3 Version 2 Disable Prev
Ethernet Port Use. Specifies the protocol for the 10BaseT port.
802.3 – IEEE 802.3 protocol is used for the 10BaseT port.
Version 2 – Ethernet Version 2 protocol is used for the 10BaseT port.
Disable – The 10BaseT port is disabled.
IP Address: 000.000.000.000
Next Edit Clear Prev
Ethernet Port IP Address. Specifies the IP address for the 10BaseT port.
Edit – Allows you to edit or display the IP address for the 10BaseT port.
Clear – Allows you to clear the IP address for the 10BaseT port. The IP address is set
to 000.000.000.000.
NOTE: This configuration option is not displayed if 10BaseT port use (ENET Use)
is disabled.
Subnet Mask: 000.000.000.000
Next Edit Clear Prev
Subnet Mask. Specifies the subnet mask for the 10BaseT port’s IP Address.
Edit – Allows you to edit and/or display the subnet mask for the 10BaseT port.
Clear – Allows you to clear the subnet mask for the 10BaseT port. The subnet mask is
set to 000.000.000.000. If the subnet mask is 000.000.000.000, the IP protocol creates
a default subnet mask based on the class of the IP address (Class A: 255.000.000.000,
Class B: 255.255.000.000, or Class C: 255.255.255.000).
NOTE: This configuration option is not displayed if 10BaseT port use (ENET Use)
is disabled.
Default Gateway Address: 000.000.000.000
Next Edit Clear Prev
Default Gateway Address. Specifies the address where messages for other subnets are
sent.
Edit – Allows you to edit and/or display the default gateway address.
Clear – Allows you to clear the default gateway address. The address is set to
000.000.000.000.
NOTE: This configuration option is not displayed if 10BaseT port use (ENET Use)
is disabled.
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Configuration Options
Alarm and Trap Configuration Options
Table C-11. Alarm and Trap Configuration Options (1 of 2)
ASCII Alarm Messages: Disable
Disable Com Port
Controls the generation of alarm messages, which are routed to an ASCII terminal or
printer attached to the communication port.
Disable – Prevents an alarm message for any alarm conditions.
Com Port – Enables alarm messages routed to the communication port.
NOTE: Alarm messages are only sent to the communication port if the Port Use
configuration option is set to ASCII, otherwise the alarm messages are
discarded.
Alarm & Trap Dial-Out: Disable
Enable Disable
Controls whether generated alarm or trap messages initiate a call if the external
communication port device connection has not already been established. When
enabled, a call is placed to the phone number contained in the alarm directory (directory
A). If the call cannot be completed and the retry option is enabled, the alarm or trap
message is held until the call is completed or the call has been retried. If more than one
alarm message is received while waiting for a call retry, only the highest priority alarm
message received is held; all previous messages are discarded.
Enable – Enables automatic call initiation (dial out) if an alarm or trap message needs
to be sent.
Disable – Disables automatic call initiation. Trap messages sent to the external
communication port device are queued (held) if an external communication port device
connection has not been previously established. Alarm messages are not queued.
NOTE: This configuration option is only available if the External Device Commands
option is enabled.
Trap Disconnect: Enable
Enable Disable
Specifies whether the external communication port device connection is disconnected
after sending a trap message. This configuration option applies only to external
communication port device connections initiated as a result of the trap message being
sent.
Enable – Specifies that the external communication port device call is disconnected
after a trap message is sent.
Disable – Specifies that the external communication port device call is not disconnected
after a trap message is sent. The line is held until it is manually disconnected or
disconnected by the device.
NOTE: This configuration option is only available if SNMP traps are enabled and
the external communication port device is enabled and configured as an
SNMP management link.
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Configuration Options
Table C-11. Alarm and Trap Configuration Options (2 of 2)
Call Retry: Disable
Enable Disable
Determines whether a call that cannot complete (busy, no answer, etc.) is retried. This
affects calls that are initiated in attempting to send an alarm or trap message to the
external communication port device. If call retry is specified, the DSU/CSU attempts to
complete the call after a configurable delay.
Enable – Enables call retry. If enabled, the call is retried once per alarm or trap
message. A delay as specified by the dial-out delay time is imposed between call
attempts. If an alternate dial-out directory is specified, both the alarm directory as well
as the alternate directory are retried up to five times.
Disable – Disables call retry. If a call setup cannot be completed it is not retried.
NOTE: This configuration option is only available if the communication port is
enabled for an external device.
Dial Out Delay Time (min):
5
8
1
2
3
4
5
6
7
9
10
Specifies the number of minutes to wait between successive dial-out alarms or traps
and between retry attempts after failed alarm dial-outs.
NOTE: This configuration option is only available if the communication port is
enabled for an external device.
Alternate Dial-Out Directory: None
None
1
2
3
4
5
Specifies whether a call that cannot be completed (busy, no answer, etc.) is retried
using an alternate phone number. This affects calls that are initiated in an attempt to
send an alarm or trap message to the external communication port device. The
alternate phone number to try is contained in one of the five call directories. If call retry
is enabled, the initial call is retried at the original number once before a call attempt to
the alternate number is tried. If the call is not completed at the alternate number, it is
also retried once. The alternate dial-out option applies to each alarm/trap event. Once a
call for an alarm/trap message either completes or fails all retry attempts, the next
alarm/trap attempts to establish a call to the phone number contained in the alarm
directory.
None – Specifies that alternate alarm dial-out is not attempted.
1–5 – Specifies the call directory that contains the phone number to call if a call cannot
be completed to the telephone number contained in the alarm directory.
NOTE: This configuration option is only available if the communication port is
enabled for an external device.
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Configuration Options
Management and Communication Configuration
Options
The Management configuration options are divided into four tables as follows:
H
H
Communication Protocol Configuration Options (Table C-12)
General SNMP Management Configuration Options (Table C-13)
H
H
SNMP NMS Security Configuration Options (Table C-14)
SNMP Traps Configuration Options (Table C-15)
Communication Protocol Configuration Options
Table C-12. Communication Protocol Configuration Options (1 of 2)
Node IP Address: Text Field
Text Field Clear
Specifies the IP address needed to access the DSU/CSU. Since this IP Address is not
bound to a particular port, it can be used for remote access via the FDL or EDL
management link.
Text Field – Allows you to edit or display the IP address for the DSU/CSU.
Clear – Allows you to clear the IP address for the DSU/CSU. The IP address is set to
000.000.000.000.
Node Subnet Mask: Text Field
Text Field Clear
Specifies the subnet mask needed to access the DSU/CSU. Since this subnet mask is
not bound to a particular port, it can be used for remote access via the FDL or EDL
management link.
Text Field – Allows you to edit or display the subnet mask for the DSU/CSU.
Clear – Allows you to clear the subnet mask for the DSU/CSU. The subnet mask is set
to 000.000.000.000. If the subnet mask is 000.000.000.000, the IP protocol creates a
default subnet mask based on the class of the IP address (Class A: 255.000.000.000,
Class B: 255.255.000.000, or Class C: 255.255.255.000).
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Configuration Options
Table C-12. Communication Protocol Configuration Options (2 of 2)
Default Net Destination: None
None Com FDL EDL1 EDL2
Specifies where the default network is connected. For example, if the default network is
connected to the communication port, you select Com. If the default network is
connected to the far-end 31xx Series device over the FDL, you select FDL. The routing
protocol uses the default network destination to route data that does not have a specific
route.
None – No default network destination. Data that cannot be routed is discarded.
Com – The default network destination is the communication port. This selection only
appears if the Port Use configuration option is set to Mgmt.
FDL – The default network destination is FDL. This selection only appears if the FDL
management link is enabled.
EDLn – The default network destination is the EDLn port (where n is 1 or 2). This
selection only appears if the synchronous data port’s EDL management link is enabled.
NOTE: If the chosen default network link is disabled or down, data is discarded.
Choose another default network.
Communication Port IP Address: Text Field
Text Field Clear
Specifies the IP address for the communication port if the Port Use configuration option
is set to Mgmt.
Text Field – Allows you to edit or display the IP address for the communication port.
Clear – Allows you to clear the IP address for the communication port. The IP address
is set to 000.000.000.000.
Communication Port Subnet Mask: Text Field
Text Field Clear
Specifies the subnet mask for the communication port if the Port Use configuration
option is set to Mgmt.
Text Field – Allows you to edit or display the subnet mask for the communication port.
Clear – Allows you to clear the subnet mask for the communication port. The subnet
mask is set to 000.000.000.000. If the subnet mask is 000.000.000.000, the IP protocol
creates a default subnet mask based on the class of the IP address (Class A:
255.000.000.000, Class B: 255.255.000.000, or Class C: 255.255.255.000).
Com Link Protocol: PPP
PPP SLIP
Specifies the link layer protocol for the communication port if the Port Use configuration
option is set to Mgmt.
PPP – Specifies PPP as the link layer protocol for the IP management link on the
communication port.
SLIP – Specifies SLIP as the link layer protocol for the IP management link on the
communication port. The communication port must be configured for asynchronous
operation to support SLIP.
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Configuration Options
General SNMP Management Configuration Options
Table C-13. General SNMP Management Configuration Options
SNMP Management: Disable
Enable Disable
Specifies whether the DSU/CSU responds to SNMP session requests.
Enable – The DSU/CSU responds to SNMP session requests.
Disable – The DSU/CSU does not respond to SNMP session requests.
Community Name 1: Text Field
Text Field Clear
Specifies the first of two community names that are allowed to access this unit’s
Management Information Base (MIB). External SNMP managers must supply this name
to access an object in the MIB.
Text Field – Allows you to edit or display the first community name.
Clear – Allows you to clear the first community name.
Name 1 Access: Read
Read Read/Write
Specifies the type of access allowed for Community Name 1. This is the type of access
allowed for external SNMP managers accessing objects in the MIB using Community
Name 1.
Read – Allows read-only access (SNMP Get) to the accessible objects in the MIB for
this device if community name 1 is used. This includes all objects specified as either
read-only or read/write in the MIB RFCs.
Read/Write – Allows read and write access (SNMP Get and Set) to the objects in the
MIB for this device if community name 1 is used. Write access is allowed for all objects
specified as read/write in the MIB RFCs. Read access is allowed for all objects
specified as either read-only or read/write.
Community Name 2: Text Field
Text Field Clear
Specifies the second of two community names that are allowed to access this unit’s
Management Information Base (MIB). External SNMP managers must supply this name
to access an object in the MIB.
Text Field – Allows you to edit or display the second community name.
Clear – Allows you to clear the second community name.
Name 2 Access: Read
Read Read/Write
Specifies the type of access allowed for Community Name 2. This is the type of access
allowed for external SNMP managers accessing objects in the MIB using Community
Name 2.
Read – Allows read-only access (SNMP Get) to the accessible objects in the MIB for
this device if community name 2 is used. This includes all objects specified as either
read-only or read/write in the MIB RFCs.
Read/Write – Allows read and write access (SNMP Get and Set) to the objects in the
MIB for this device if community name 2 is used. Write access is allowed for all objects
specified as read/write in the MIB RFCs. Read access is allowed for all objects
specified as either read-only or read/write.
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Configuration Options
SNMP NMS Security Configuration Options
Table C-14. SNMP NMS Security Configuration Options
NMS IP Validation: Disable
Enable Disable
Specifies whether the DSU/CSU validates (for security reasons) the IP address of an
SNMP manager attempting to access the DSU/CSU. Allowable addresses are specified
using the NMS n IP Adr configuration option.
Enable – The DSU/CSU validates the IP address of SNMP managers attempting to
access the DSU/CSU.
Disable – The DSU/CSU does not validate the IP address of SNMP managers.
Number of Managers:
1
7
1
2
3
4
5
6
8
9
10
Specifies the number of SNMP managers that are allowed to access the DSU/CSU.
NOTE: You must configure an IP address for each SNMP manager that is allowed
access to the DSU/CSU. Allowable addresses are specified using the NMS
n IP Adr configuration option.
NMS n IP Address: Text Field
Text Field Clear
Specifies the allowable IP address of an SNMP manager attempting to access the
DSU/CSU. The manager number (n) is specified by the Number of Managers
configuration option.
Text Field – Allows you to edit or display the allowable IP address for the SNMP
manager.
Clear – Allows you to clear the allowable IP address for the SNMP manager. The IP
address is set to 000.000.000.000.
Access Level: Read
Read Read/Write
Specifies the allowable type of access for an authorized SNMP manager if IP address
validation has occurred.
Read – Allows read-only access (SNMP Get) to the accessible objects in the MIB for
this device. This includes all objects specified as either read-only or read/write in the
MIB RFCs.
Read/Write – Allows read and write access (SNMP Get and Set) to the objects in the
MIB for this device. Write access is allowed for all objects specified as read/write in the
MIB RFCs. Read access is allowed for all objects specified as either read-only or
read/write.
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Configuration Options
SNMP Traps Configuration Options
Table C-15. SNMP Traps Configuration Options (1 of 3)
SNMP Traps: Disable
Enable Disable
Specifies whether SNMP trap messages are sent over the SNMP management link.
Enable – Enables sending SNMP trap messages from this unit over any SNMP
management link.
Disable – Disables sending SNMP trap messages from this unit over any SNMP
management link.
Number of Trap Managers:
1
1
2
3
4
5
6
Specifies the number of SNMP trap managers that are to receive traps for this unit.
NOTE: You must configure an IP address for each trap manager that is to receive
trap messages.
NMS n IP Address: Text Field
Text Field Clear
Specifies the IP address for each trap manager. This configuration option is repeated for
all trap managers supported by the unit.
Text Field – Allows you to edit or display the IP address for Trap Manager n.
Clear – Allows you to clear the IP address for Trap Manager n. The IP address is set to
000.000.000.000.
Destination: None
None Com FDL EDL1 EDL2
Specifies the network destination for Trap Manager n. This configuration option is
displayed for the number of trap managers (n) specified by the Number of Trap
Managers configuration option.
None – No Trap Manager n network destination. Traps are discarded.
Com – The Trap Manager n network destination is the communication port. This
selection only appears if the Port Use configuration option is set to Mgmt.
FDL – The Trap Manager n network destination is the FDL management link. This
selection only appears if the FDL management link is enabled.
EDLn – The Trap Manager n network destination is the EDLn port (where n is 1 or 2).
This selection only appears if the synchronous data port’s EDL management link is
enabled.
NOTE: If the chosen destination link is disabled or down, the traps are discarded.
Choose another destination.
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Configuration Options
Table C-15. SNMP Traps Configuration Options (2 of 3)
General Traps: Both
Disable Warm AuthFail Both
Specifies the general trap types to enable.
Disable – Disables the sending of trap messages for warmStart and
authenticationFailure events.
Warm – Sends trap messages for warmStart events to the currently configured trap
manager(s).
AuthFail – Sends trap messages for authenticationFailure events to the currently
configured trap manager(s).
Both – Sends trap messages for warmStart and authenticationFailure events to the
currently configured trap manager(s).
NOTE: This configuration option is not available if the SNMP Traps configuration
option is disabled.
Enterprise Specific Traps: Enable
Enable Disable
Specifies whether enterpriseSpecific traps are enabled.
Enable – Sends trap messages for enterpriseSpecific events to the currently configured
trap manager(s).
Disable – Disables the sending of trap messages for enterpriseSpecific events.
NOTE: This configuration option is not available if the SNMP Traps configuration
option is disabled.
Link Traps: Both
Disable Up Down Both
Specifies the link trap type to enable. Interfaces monitored for linkUp and linkDown
traps are specified with the Link Trap Interfaces configuration option.
Disable – Disables the sending of trap messages for linkDown or linkUp events.
Up – Sends trap messages for linkUp events to the currently configured trap
manager(s).
Down – Sends trap messages for linkDown events to the currently configured trap
manager(s).
Both – Sends trap messages for linkUp and linkDown events to the currently configured
trap manager(s).
NOTE: This configuration option is not available if the SNMP Traps configuration
option is disabled.
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Configuration Options
Table C-15. SNMP Traps Configuration Options (3 of 3)
Link Trap Interfaces: All
Network DTE T1s Ports All
Specifies which interfaces generate linkUp and linkDown trap messages. These traps
are supported on the T1 interfaces (network and DTE Drop/Insert) and the synchronous
data ports.
Network – Sends trap messages for linkUp and linkDown events occurring on the
network interface.
DTE – Sends trap messages for linkUp and linkDown events occurring on the DTE
Drop/Insert (DSX-1) interface. This selection does not appear if the DTE Drop/Insert
(DSX-1) interface is disabled.
T1s – Sends trap messages for linkUp and linkDown events occurring on the network or
DTE Drop/Insert (DSX-1) interface.
Ports – Sends trap messages for linkUp and linkDown events occurring on the
synchronous data ports.
All – Sends trap messages for linkUp and linkDown events occurring on the network
interface, DTE Drop/Insert (DSX-1) interface, or the synchronous data ports.
NOTE: This configuration option is not available if the Link Traps configuration
option is not configured to generate trap messages for linkUp or linkDown
events.
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Configuration Options
Configuration Worksheets
This section contains one set of blank worksheets to be used when configuring
your DSU/CSU using the async terminal interface. In the tables, default settings
for Factory 1 are indicated by bold type. It is recommended that you copy these
blank worksheets before using them.
Network Interface Options
Line Framing Format
Line Coding Format
Bit Stuffing
Value (Default in Bold)
D4, ESF
AMI, B8ZS
62411, Disable
0.0, –7.5, –15, –22.5
Enable, Disable
Enable, Disable
Line Build Out (LBO)
Management Link
ANSI Performance Report Mes-
sages
Network Initiated LLB
Network Initiated PLB
Circuit Identifier
Enable, Disable
Enable, Disable
Text Field, Clear
DTE Interface Options
Interface Status
Value (Default in Bold)
Enable, Disable
Line Framing Format
Line Coding Format
D4, ESF
AMI, B8ZS
Line Equalization
0–133, 133–266, 266–399, 399–533, 533–655
Enable, Disable
DTE LB on External Contact
Send All Ones on DTE Failure
Enable, Disable
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Configuration Options
Sync Data Port Options (Port 1)
Port Type
Value (Default in Bold)
E530, V.35, RS449, X.21
Nx64, Nx56
Port Base Rate
Transmit Clock Source
Internal, External
Enable, Disable
Invert Transmit Clock
Invert Transmit and Received Data
Send All Ones on Data Port Not Ready
Action on Network Yellow Alarm
Network Init. Data Channel Loopback
Port (DTE) Initiated Loopbacks
Embedded Data Link
Enable, Disable
Disable, DTR, RTS, Both
None, Halt
Disable, V.54, FT1, Both
Disable, DTLB, DCLB, Both
Enable, Disable
EDL Management Link
Enable, Disable
Excessive Error Rate Threshold
10E–4, 10E–5, 10E–6, 10E–7, 10E–8,
10E–9
Near-End Performance Statistics
Far-End Performance Statistics
Disable, Maintain, Send, Both
Disable, Maintain
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Configuration Options
Sync Data Port Options (Port 2)
Port Type
Value (Default in Bold)
E530, V.35, RS449, X.21
Nx64, Nx56
Port Base Rate
Transmit Clock Source
Internal, External
Enable, Disable
Invert Transmit Clock
Invert Transmit and Received Data
Send All Ones on Data Port Not Ready
Action on Network Yellow Alarm
Network Init. Data Channel Loopback
Port (DTE) Initiated Loopbacks
Embedded Data Link
Enable, Disable
Disable, DTR, RTS, Both
None, Halt
Disable, V.54, FT1, Both
Disable, DTLB, DCLB, Both
Enable, Disable
EDL Management Link
Enable, Disable
Excessive Error Rate Threshold
10E–4, 10E–5, 10E–6, 10E–7, 10E–8,
10E–9
Near-End Performance Statistics
Far-End Performance Statistics
Disable, Maintain, Send, Both
Disable, Maintain
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Configuration Options
Network Interface
Network Channel
Allocation
N1
N2
N3
N4
N5
N6
N7
N8
N9
N10
N11
N12
N13
N14
N15
N16
N17
N18
N19
N20
N21
N22
N23
N24
Allocations
N1 – N24 indicates allocation to DTE (Drop/Insert) channels.
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Configuration Options
DTE Drop/Insert (DSX-1) Interface
DTE (DSX-1) Channel
Allocation
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
Allocations
D1 – D24 indicates allocation to network channels.
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Configuration Options
DTE Signaling
D1
Assign: (N1 – 24)
Voice RBS or Data)
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
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Configuration Options
Sync Data Port
Channel
Options
Value (Default in Bold)
Network, DTE, Port 2
Block, ACAMI, Channel
Assign To
Assign By
Port Rate
Nx64: 64, 128, 192, 256, 320, 384, 448, 512, 576,
640, 704, 768, 832, 896, 960, 1024, 1088, 1152,
1216, 1280, 1344, 1408, 1472, 1536
Nx56: 56, 112, 168, 224, 280, 336, 392, 448, 504,
560, 616, 672, 728, 784, 840, 896, 952, 1008, 1064,
1120, 1176, 1232, 1288, 1344
If Assign By Block
Start At
Time Slot (Nx or Dx): 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
(Select One)
Port 1
Port Rate
Nx64: 64, 128, 192, 256, 320, 384, 448, 512, 576,
640, 704, 768
Nx56: 56, 112, 168, 224, 280, 336, 392, 448, 504,
560, 616, 672
If Assign By
ACAMI
Start At
Time Slot (Nx or Dx): 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23
(Select One)
If Assign By
Channel
Time Slot (Nx or Dx): 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
(Select Multiple)
Assign To
Assign By
Network, DTE, Port 1
Block, ACAMI, Channel
Port Rate
Nx64: 64, 128, 192, 256, 320, 384, 448, 512, 576,
640, 704, 768, 832, 896, 960, 1024, 1088, 1152,
1216, 1280, 1344, 1408, 1472, 1536
Nx56: 56, 112, 168, 224, 280, 336, 392, 448, 504,
560, 616, 672, 728, 784, 840, 896, 952, 1008, 1064,
1120, 1176, 1232, 1288, 1344
If Assign By Block
Start At
Time Slot (Nx or Dx): 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
(Select One)
Port 2
Port Rate
Nx64: 64, 128, 192, 256, 320, 384, 448, 512, 576,
640, 704, 768
Nx56: 56, 112, 168, 224, 280, 336, 392, 448, 504,
560, 616, 672
If Assign By
ACAMI
Start At
Time Slot (Nx or Dx): 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23
(Select One)
If Assign By
Channel
Time Slot (Nx or Dx): 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
(Select Multiple)
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Configuration Options
General Options
Value (Default in Bold)
Enable, Disable
Generate Yellow Alarm Signals
Initial Self Test
Enable, Disable
Primary Clock Source
External Clock Rate (KHz)
Test Timeout
Network, DTE, Internal, External, Port 1
2048, 1544, 8
Enable, Disable
Test Duration
1–120 (Default = 10)
User Interface: Communication Port
Options
Value (Default in Bold)
Mgmt, ASCII, Terminal
Asynchronous, Synchronous
Internal, External
1.2, 2.4, 4.8, 9.6, 14.4, 19.2, 38.4
7, 8
Port Use
Port Type
Clock Source
Data Rate
Character Length
Parity
None, Even, Odd
1, 1.5, 2
Stop Bits
Ignore Control Leads
Password Required
Inactivity Timeout
Disconnect Time
Disable, DTR
Enable, Disable
Enable, Disable
1–60 (Default = 5)
User Interface: External Device Options Value (Default in Bold)
External Device Commands
Dial-In Access
Disable, AT, Other
Enable, Disable
Connect Prefix
Text Field, Clear
Text Field, Clear
Text Field, Clear
None, 0.2, 0.4, 0.6, 0.8, 1.0
Text Field, Clear
Connect Indication String
Escape Sequence
Escape Sequence Delay (sec)
Disconnect String
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Configuration Options
User Interface: Telnet Sessions Options Value (Default in Bold)
Telnet Session
Enable, Disable
Enable, Disable
Enable, Disable
1–60 (Default = 5)
Password Required
Inactivity Timeout
Disconnect Time
User Interface: Ethernet Port Options
Port Use
Value (Default in Bold)
Version 2, 802.3
IP Address
000.000.000.000
Subnet Mask
(Default based on class of IP Address)
000.000.000.000
Default Gateway Address
Alarm and Trap Configuration Options Value (Default in Bold)
ASCII Alarm Messages
Alarm & Trap Dial-Out
Trap Disconnect
Disable, Com Port
Enable, Disable
Enable, Disable
Call Retry
Enable,Disable
Dial Out Delay Time (min)
Alternate Dial-Out Directory
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
None, 1, 2, 3, 4, 5
Management and Communication:
Communication Protocol Options
Value (Default in Bold)
Text Field, Clear
Node IP Address
Node Subnet Mask
Text Field, Clear
Default Network Destination
Communication Port IP Address
Communication Port Subnet Mask
Com Link Protocol
None, Com, FDL, EDL1, EDL2
Text Field, Clear
Text Field, Clear
PPP, SLIP
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Configuration Options
Management and Communication:
General SNMP Management Options
Value (Default in Bold)
Enable, Disable
Text Field, Clear
Read, R/W
SNMP Management
Community Name 1
Name 1 Access
Community Name 2
Name 2 Access
Text Field, Clear
Read, R/W
Management and Communication:
SNMP NMS Security Options
Value (Default in Bold)
Enable, Disable
NMS IP Validation
Number of Managers
NMS n IP Address
Access Level
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Text Field, Clear
Read, R/w
Management and Communication:
SNMP Traps Options
Value (Default in Bold)
Enable, Disable
SNMP Traps
Number of Trap Managers
NMS n IP Address
Destination
1, 2, 3, 4, 5, 6
Text Field, Clear
None, Com, FDL, EDL1, EDL2
Disable, Warm, AuthFail, Both
Enable, Disable
General Traps
Enterprise Specific Traps
Link Traps
Disable, Up, Down, Both
Network, DTE, T1s, Ports, All
Link Trap Interfaces
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Pin Assignments
D
Overview
The DSU/CSU is shipped with a power module. Various other interconnecting
cables are available. For cable feature numbers, refer to Appendix G, Equipment
List. This appendix describes connector pin assignments and cables.
T1 Network Interface
The T1 network interface connector is an RJ48C, 8-position, unkeyed modular
jack (Table D-1).
The T1 line interface cable is a 20-foot, 24 AWG solid, 2-twisted-pair cable that is
either RJ48C-to-RJ48C (Figure D-1) or RJ48C-to-DA15P (Figure D-2).
Table D-1. T1 Network Interface Connector
Signal
Pin Number
Receive Ring
Receive Tip
Transmit Ring
Transmit Tip
1
2
4
5
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Pin Assignments
Figure D-1. T1 Line Interface Cable, RJ48C-to-RJ48C
Figure D-2. T1 Line Interface Cable, RJ48C-to-DA15P
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Pin Assignments
DTE Drop/Insert Interface
The DTE Drop/Insert (DSX-1) interface connector is a DB15-type socket
connector (Table D-2). For information about using Relay Contact Sense for
external DTE loopback, refer to the DTE LB on Contact configuration option in
DTE Interface Configuration Options of Appendix C.
The DTE Drop/Insert (DSX-1) cable (Figure D-3) is typically supplied by a DTE
vendor. It is made of shielded twisted-pair wires (22 AWG). The cable connector
is a DB15-type plug connector. Be sure to connect the shield ground only at the
DSU/CSU end to prevent ground loops.
Table D-2. DTE Drop/Insert (DSX-1 Connector)
Signal
Pin Number
Receiver Tip from DTE
Receiver Ring from DTE
Transmitter Tip to DTE
Transmitter Ring to DTE
Relay Contact Sense Return
Relay Contact Sense
Shield Ground
1
9
3
11
12
14
2,4
Figure D-3. DTE Drop/Insert (DSX-1) Cable
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Pin Assignments
10BaseT Connector
Use a standard 10BaseT cable to connect the DSU to an Ethernet LAN. A cable
is provided with the DSU.
The following table defines the pinouts for the 10BaseT port. It is an 8-pin,
unkeyed jack.
Use
Pin #
Transmitted Data +
1
2
3
4
5
6
7
8
Transmitted Data –
Received Data +
NC
NC
Received Data –
NC
NC
NC = Not connected (unused).
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Pin Assignments
COM Port Interface
The COM port connects to a PC for front panel emulation, to an ASCII terminal or
printer for alarms, to an async terminal, or to a network device (e.g., a router) for
SNMP or Telnet applications. The COM port connector is an 8-position keyed
modular connector (Table D-3). The data signals on this port are referenced to a
DTE interface.
The COM port-to-PC cable is shown in Figure D-4 and the COM
port-to-terminal/printer cable is shown in Figure D-5.
Table D-3. COM Port Connector
Signal
Direction
Pin Number
DCE Transmit Clock
DCE Receive Data
Signal Ground
From DSU/CSU
From DSU/CSU
—
1
2
3
4
5
6
7
8
DCE Transmit Data
DCE Data Terminal Ready
DCE Carrier Detect
DCE Request-to-Send
DCE Receive Clock
To DSU/CSU
To DSU/CSU
From DSU/CSU
To DSU/CSU
From DSU/CSU
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Pin Assignments
Figure D-4. COM Port-to-PC Cable
Figure D-5. COM Port-to-Terminal/Printer Cable
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Pin Assignments
Serial Crossover Cable
Use a serial crossover cable like the one shown in Figure D-6 (with an adapter
wired like the cable in Figure D-5) to connect an external modem to the
DSU/CSU’s COM port.
Pin 14
Pin 1
P1
Plug
P2
Plug
Pin 14
Pin 1
Pin 25
Pin 13
Pin 25
Pin 13
P1
Pin
Pin
P2
Chassis Ground
TXD
1
Chassis Ground
TXD
1
2
2
RXD
3
RXD
3
RTS
4
RTS
4
CTS
5
CTS
5
DSR
6
DSR
6
Signal Ground
CD (RLSD)
7
Signal Ground
CD (RLSD)
7
8
8
9
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
10
11
12
13
14
15
16
17
18
19
DTR
DTR 20
21
22
23
24
25
497-15180a
Figure D-6. Serial Crossover Cable
3162-A2-GB20-40
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Pin Assignments
EIA-530-A Port Interface Connector
The EIA-530-A Port interface connector information is shown in Table D-4.
Table D-4. EIA-530-A Port Interface Connector
Circuit CCITT
Signal
Direction
Pin
1
Mnemonic Number
Shield
—
—
—
—
—
Signal Common
Signal Common
Transmitted Data
AB
AC
BA
102A
102B
103
7
23
To DSU/CSU 2 (A)
14 (B)
Received Data
Request-to-Send
Clear-to-Send
BB
CA
CB
CF
CC
104
105
106
109
107
From
DSU/CSU
3 (A)
16 (B)
To DSU/CSU 4 (A)
19 (B)
From
DSU/CSU
5 (A)
13 (B)
Received Line Signal
Detector
From
DSU/CSU
8 (A)
10 (B)
DCE Ready
From
6
DSU/CSU
DTE Ready
CD
DA
108/1, /2
113
To DSU/CSU 20
Transmit Signal Element
Timing (DTE Source)
To DSU/CSU 11 (B)
24 (A)
Transmit Signal Element
Timing (DCE Source)
DB
DD
114
115
From
DSU/CSU
12 (B)
15 (A)
Receiver Signal Element
Timing (DCE Source)
From
DSU/CSU
17 (A)
9 (B)
Local Loopback
Remote Loopback
Test Mode
LL
141
140
142
To DSU/CSU 18
To DSU/CSU 21
RL
TM
From
25
DSU/CSU
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Pin Assignments
EIA-530-A-to-RS-449 Adapter
The EIA-530-A-to-RS-449 adapter (Figure D-7) provides the RS-449 interface
shown in Table D-5.
530
SIGNAL
DB37 449
SOCKET SIGNAL
DB25
PLUG
SHIELD
TD-A
1
1
SHIELD
TD-A
2
4
TD-B
14
3
22
6
TD-B
RD-A
RD-A
RD-B
16
15
12
17
9
24
5
RD-B
TXC-A
TXC-B
RXC-A
RXC-B
RTS-A
RTS-B
CTS-A
CTS-B
DTR
TXC-A
TXC-B
RXC-A
RXC-B
RTS-A
RTS-B
CTS-A
CTS-B
DTR-A
RR-A
23
8
26
7
4
19
5
25
9
13
20
8
27
12
13
31
11
19
14
10
20
17
35
18
RLSD-A
RLSD-B
DSR
10
6
RR-B
DM-A
SIG. COMMON
RL
7
SIG. COMMON
RL
21
18
23
24
11
25
22
LL
LL
RCV. COMMON
TT-A
RCV. COMMON
TT-A
TT-B
TT-B
TM
TM
SIG. COMMON
29
30
DM-B
DTR-B
495-14323-01
Figure D-7. EIA-530-A-to-RS-449 Adapter
3162-A2-GB20-40
August 2000
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Pin Assignments
Table D-5. RS-449 Cable Interface
Circuit
CCITT
Signal
Direction
Pin
1
Mnemonic Number
Shield
—
—
—
Signal Ground
Receive Ground
Send Common
Send Data
SG
RC
SC
SD
102A
102B
—
—
19
20
37
—
—
103
To DSU/CSU
4 (A)
22 (B)
Receive Data
Request-to-Send
Clear-to-Send
Receiver Ready
Data Mode
RD
RS
CS
RR
DM
TR
TT
104
From DSU/CSU
To DSU/CSU
6 (A)
24 (B)
105
7 (A)
25 (B)
106
From DSU/CSU
From DSU/CSU
From DSU/CSU
To DSU/CSU
9 (A)
27 (B)
109
13 (A)
31 (B)
107
11 (A)
29 (B)
Terminal Ready
Terminal Timing
Send Timing
108/1, /2
113
12 (A)
30 (B)
To DSU/CSU
17 (A)
35 (B)
ST
RT
114
From DSU/CSU
From DSU/CSU
5 (A)
23 (B)
Receive Timing
115
8 (A)
26 (B)
Local Loopback
Remote Loopback
Test Mode
LL
141
140
142
To DSU/CSU
To DSU/CSU
From DSU/CSU
10
14
18
RL
TM
August 2000
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Pin Assignments
EIA-530-A-to-V.35 Adapter
The EIA-530-A-to-V.35 adapter (Figure D-8) provides the V.35 interface shown in
Table D-6.
530 DB25
SIGNAL PLUG
V.35
SIGNAL
MS34
SOCKET
SHIELD
TD-A
1
2
A
P
S
R
T
Y
SHIELD
TD-A
TD-B 14
RD-A
TD-B
3
RD-A
RD-B 16
TXC-A 15
TXC-B 12
RXC-A 17
RD-B
TXC-A
AA TXC-B
V
X
C
D
F
RXC-A
RXC-B
RTS
RXC-B
RTS
9
4
5
8
6
7
CTS
CTS
RLSD
RLSD
DSR
DSR
E
B
U
W
H
N
L
SIG. COMMON
SIG. COMMON
TT-A
TT-A 24
TT-B 11
TT-B
DTR 20
DTR
RL 21
RL
LL 18
LL
TM 25
NN TM
SIG. COMMON 23
497-15233
Figure D-8. EIA-530-A-to-V.35 Adapter
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Pin Assignments
Table D-6. V.35 Cable Interface
CCITT
Signal
Direction
Pin
A
Number
Shield
—
—
Signal Common
Transmitted Data
102
—
B
103
To DSU/CSU
P (A)
S (B)
Received Data
104
From DSU/CSU
R (A)
T (B)
Request to Send
Clear to Send
105
106
109
To DSU/CSU
C
D
F
From DSU/CSU
From DSU/CSU
Data Channel Received
Line Signal Detector
Data Set Ready
107
From DSU/CSU
E
H
Data Terminal Ready
108/1, /2 To DSU/CSU
Transmit Signal Element
Timing (DTE Source)
113
114
115
To DSU/CSU
U (A)
W (B)
Transmit Signal Element
Timing (DCE Source)
From DSU/CSU
From DSU/CSU
Y (A)
AA (B)
Receiver Signal Element
Timing (DCE Source)
V (A)
X (B)
Local Loopback
141
140
142
To DSU/CSU
To DSU/CSU
From DSU/CSU
L
Loopback/Maintenance
Test Indicator
N
NN
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Pin Assignments
EIA-530-A-to-X.21 Adapter
The EIA-530-A-to-X.21 adapter (Figure D-9) provides the X.21 interface shown in
Table D-7.
530 DB25
SIGNAL PLUG
X.21
SIGNAL
DB15
SOCKET
TD-A
TD-B
2
14
3
2
9
TD-A
TD-B
RD-A
4
RD-A
RD-B
16
17
9
11
6
RD-B
RXC-A
RXC-A
RXC-B
RTS-A
RTS-B
RLSD-A
RLSD-B
SIG. COMMON
TT-A
RXC-B
13
3
RTS-A
4
RTS-B
19
8
10
5
RLSD-A
RLSD-B
SIG. COMMON
TT-A
10
7
12
8
24
11
7
TT-B
14
TT-B
495-14787
Figure D-9. EIA-530-A-to-X.21 Adapter
Table D-7. X.21 Cable Interface
Signal
CCITT
Number
Direction
Pin
Signal Common
Transmitted Data
102
103
—
8
To DSU/CSU
2 (A)
9 (B)
Received Data
104
105
109
113
115
From DSU/CSU 4 (A)
11 (B)
Request-to-Send
To DSU/CSU
3 (A)
10 (B)
Data Channel Received Line Signal Detector
Transmit Signal Element Timing (DTE Source)
Receiver Signal Element Timing (DCE Source)
From DSU/CSU 5 (A)
12 (B)
To DSU/CSU
7 (A)
14 (B)
From DSU/CSU 6 (A)
13 (B)
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Pin Assignments
External Clock Interface
The External Clock connector pinouts are in Table D-8.
Table D-8. External Clock Connector
Signal
Pin Number
Shield
1
Clock (+) (RS-422 only)
Clock (–) (RS-422 only)
Clock In (RS-423 only)
Signal Common
2
3
9
11
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SNMP MIB Objects
E
Overview
This appendix describes the Management Information Base (MIB) objects that
are supported by the DSU/CSU.
The DSU/CSU supports the following MIBs:
H
MIB II – Defines the general objects for use in Transmission Control
Protocol/Internet Protocol (TCP/IP) internets and provides general
information about the DSU/CSU.
H
H
DS1/E1 MIB – Defines objects for managing DS1 interfaces and supports the
network and DTE Drop/Insert (DSX-1) interfaces on the DSU/CSU.
RS-232-like MIB – Defines objects for managing RS-232-type interfaces and
supports synchronous data ports (PORTs 1– 2) and management
communication (COM) port on the DSU/CSU.
H
Generic-Interface MIB Extension – An extension to MIB II that defines
additional objects for control of generic interfaces in MIB II. It supports control
of tests on the DTE Drop/Insert (DSX-1) and synchronous data interfaces
that are not supported by other MIBs.
H
Enterprise MIB – Defines objects unique to devices like the Model 3162.
MIB II (RFC 1213)
The objects defined by MIB II are organized into 10 different groups. The
DSU/CSU implements only those groups where the semantics of the group are
applicable to the implementation of a DSU/CSU. The MIB II object groups
supported or not supported by the 3100 Series devices are as follows:
System
Group
Supported.
Interface
Group
Supported for the network interface, the DTE Drop/Insert
(DSX-1) interface, the synchronous data ports, and the COM
port. Interface statistics (counters) apply to the COM port
when it is defined as the SNMP management link.
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SNMP MIB Objects
Address
Translation
Group
Not supported since this group is not supported in MIB II.
Supported.
IP Group
ICMP Group Supported.
TCP Group
UDP Group
EGP Group
Supported.
Supported.
Not supported since the EGP protocol is not supported by
the DSU/CSU.
Transmissio Supported on the T1 interfaces using the DS1/E1 MIB.
n Group
Supported on the synchronous data ports using the
RS-232-like MIB. Supported on the COM port using the
RS-232-like MIB.
SNMP Group Supported.
System Group, MIB II
The System Group objects are fully supported by the DSU/CSU. The following
sections provide clarification for objects contained in the System Group where it
is not otherwise clear how the object definition in MIB II is related to the
DSU/CSU. Objects not mentioned are supported as stated in the MIB.
System Group – “sysDescr” Object (system 1)
This object provides the full name and version identification for the system
hardware and software. This object displays the following string:
[Company Name] T1 DSU/CSU; model xxxx-xx-xxx; S/W Release: yy.yy.yy; H/W
CCA: zzzz-zzz; Serial number: ssssssss.
Where:
xxxx-xx-xxx represents the full model number of the unit.
yy.yy.yy represents the software revision number of the unit.
zzzz-zzz represents the hardware revision number of the unit.
ssssssss represents the serial number of the unit.
System Group – “sysObjectID” Object (system 2)
This object provides the authoritative identification of the network management
subsystem contained in the unit.
This object displays the following object identifier:
3162
[Company OID].1.14.2.2.7
System group –”sysContact” Object (system 4)
This object provides a textual identification of the contact person for this
managed node.
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SNMP MIB Objects
System Group – “sysName” Object (system 5)
This object provides an administratively-assigned name for this managed node.
System Group – “sysLocation” Object (system 6)
This object provides the physical location of this node.
System Group – “sysServices” Object (system 7)
This object provides a value which indicates the set of services that are
potentially offered by the DSU/CSU. Only the following values are supported.
H
H
H
H
physical(1) – Layer 1 functionality for all interfaces.
datalink/subnetwork(2) – Layer 2 functionality (SLIP, PPP) for the COM port.
internet(4) – Layer 3 functionality (IP) for all management links.
end-to-end(8) – Layer 4 functionality (UDP) for all management links.
Therefore, set this object to 15 (the sum of 1 + 2 + 4 + 8).
Interface Group, MIB II
The Interfaces Group consists of an object indicating the number of interfaces
supported by the unit and an interface table containing an entry for each
interface. The DSU/CSU provides an entry in the interface table for the network
interface, the DTE Drop/Insert (DSX-1) interface, each of the synchronous data
ports (1 or 2), the COM port. The following sections provide clarification for
objects contained in the Interface Group where it is not clear how the object
definition in MIB II is related to the DSU/CSU.
Interface Group – “ifNumber” Object (interfaces 1)
This variable contains the maximum number of MIB II supported interfaces
possible across the 31xx Series product line (9). This is different from the MIB
description, which is defined as the number of interfaces on the particular device.
This change allows the use of the same ifIndexes across all 31xx Series models.
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SNMP MIB Objects
Interface Group – “ifIndex” Object (ifEntry 1)
This object provides the index into the ifTable and typically into tables in other
MIBs also. The values of the ifIndex object do not vary between models even
though not all indexes are supported for a particular model. When an
unsupported index is accessed, “noSuchName” is returned.
The following are the values of the ifIndexes for all DSU/CSU models:
H
H
H
H
H
H
H
H
H
1–Net T1
2–DTE T1
3–COM port
4–Modem port
5–Auxiliary RS-232 port
6–DCE port 1
7–DCE port 2
8–DCE port 3
9–DCE port 4
The supported ifIndexes for the 3162 DSU/CSU are:
H
H
H
H
H
Net T1
DTE T1
COM port
DCE port 1
DCE port 2
Interface Group – “ifDescr” Object (ifEntry 2)
This object provides information about the interface. Each interface displays a
text string as shown below:
Network T1:
DTE T1:
“Network T1. [Company Name] T1 DSU/CSU, Hardware
Version: [CCA number]”.
“DTE T1. [Company Name] T1 DSU/CSU, Hardware
Version: [CCA number]”.
COM:
“COM port. [Company Name] T1 DSU/CSU, Hardware
Version: [CCA number]”.
Data Ports:
“Data Port n. [Company Name] T1 DSU/CSU, Hardware
Version: [CCA number]” (where n is 1 or 2).
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SNMP MIB Objects
Interface Group – “ifType” Object (ifEntry 3)
This object identifies the type of the interface based on the physical/link
protocol(s) immediately below the network layer. Only the following values are
supported by the DSU/CSU:
H
H
ds1 – Used for the network and DTE Drop/Insert (DSX-1) interfaces.
propPointToPointSerial(22) – Used for the synchronous data ports. Used for
the COM port when the port is not configured as the SNMP management
interface.
H
H
ppp(23) – Used for the COM port when the port is configured for PPP.
slip(28) – Used for the COM port when the port is configured for SLIP.
Interface Group – “ifMtu” Object (ifEntry 4)
This object identifies the largest datagram that can be sent or received on the
interface. It is applicable only to the interface configured as the SNMP
management link. This object is zero for all other interfaces.
Interface Group – “ifSpeed” Object (ifEntry 5)
This object provides the interface’s current bandwidth in bits per second. The
value of this object for each interface is specified as follows:
T1 Interfaces: 1,544,000 bps.
COM:
The currently configured data rate for the port.
Data Ports:
The currently configured data rate for the port when the port
is allocated to one of the T1 interfaces. If the port is not
allocated the data rate is defined as zero.
Interface Group – “ifAdminStatus” Object (ifEntry 7)
This object specifies the desired state (configuration) of the interface. This object
is supported only for the COM port. It provides the ability to switch between using
the port for SNMP or ASCII operations (dial-out, front panel emulation). The value
of this object will not affect the state of any of the interfaces on the DSU/CSU
other than the COM port. Only the following values are supported by the
DSU/CSU:
H
H
up(1) – The SNMP management link is active on the COM port.
testing(3) – The SNMP management link is inactive on the COM port; the
COM port can be used for proprietary ASCII functions.
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SNMP MIB Objects
Interface Group – “ifOperStatus” Object (ifEntry 8)
This object specifies the current operational state of the interface. The value of
this object for each interface is defined as follows:
Network T1:
DTE T1:
The interface is up(1) when no alarm conditions exist.
The interface is down(2) when an alarm condition is active.
The interface is testing(3) when a test is active on the
interface.
The interface is up(1) when no alarm conditions exist and
the interface is enabled.
The interface is down(2) when an alarm condition is active
and the interface is disabled.
The interface is testing(3) when a test is active on the
interface.
COM Port:
Data Ports:
When configured as an SNMP management link, up and
down are based on the current state of the link layer
protocol. Otherwise, the interface is always up(1).
The interface is never in the testing(3) state.
The interface is up(1) when the port is assigned to a T1
interface or another data port as a backup, and both CTS
and DSR are ON.
The interface is down(2) when the port is unassigned, or
either CTS or DSR is OFF.
The interface is testing(3) when a test is active on the
interface.
Interface Group – “ifLastChange” Object (ifEntry 9)
This object contains the value of “sysUpTime” at the time the interface entered its
current operational state.
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SNMP MIB Objects
Interface Group – Input Counters (objects ifEntry 10 to ifEntry 15)
These objects collect statistics on the data received by the COM port when it is
configured as an SNMP management link. If it is not configured as an SNMP
management link, these statistics are not provided and an error status is returned
if access is attempted. The objects used to collect input statistics are listed below:
H
H
H
H
H
H
ifInOctets (ifEntry 10)
ifInUcastPkts (ifEntry 11)
ifInNUcastPkts (ifEntry 12)
ifInDiscards (ifEntry 13)
ifInErrors (ifEntry 14)
ifInUnknownProtos (ifEntry 15)
Interface Group – Output Counters (objects ifEntry 16 to ifEntry 21)
These objects collect statistics on the data received by the COM port when it is
configured as an SNMP management link. If it is not configured as an SNMP
management link, these statistics are not provided and an error status is returned
if access is attempted. The objects used to collect output statistics are listed
below:
H
H
H
H
H
H
ifOutOctets (ifEntry 16)
ifOutUcastPkts (ifEntry 17)
ifOutNUcastPkts (ifEntry 18)
ifOutDiscards (ifEntry 19)
ifOutErrors (ifEntry 20)
ifOutQLen (ifEntry 21)
IP Group, MIB II
The IP Group objects are supported by the DSU/CSU for all data paths which
currently are configured to carry IP data to or from the DSU/CSU, including the
COM port, EDL, and FDL. All of the objects in the IP Group other than the IP
Address Translation table are fully supported. The IP Address Translation table
(ipNetToMediaTable) does not apply to the DSU/CSU and will be empty (i.e.,
have zero entries). The following sections provide clarification for objects
contained in the IP Group when it is not clear how the object definition in MIB II is
related to the DSU/CSU.
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SNMP MIB Objects
IP Group – “ipForwarding” Object (ip 1)
This object specifies whether the unit is acting as an IP gateway in respect to the
forwarding of a datagram received by, but not addressed to, this unit. Only the
following value is supported by the DSU/CSU.
H
forwarding(1) – The unit is acting as a gateway.
IP Group – “ipAddrTable” Object (ip 20)
The address table is supported by the DSU/CSU.
IP Group – “ipAdEntAddr” Object (ipAddrEntry 1)
The ipAdEntAddr object is an IP address supported by the device and serves as
the index to the address table. Since indexes for tables must be unique, only one
ifIndex may be displayed for each IP address supported by the device. If you
have configured the same IP address for multiple interfaces or for default IP
addresses, you will not see all interfaces that support a particular IP address
upon display of the ipAddrTable.
IP Group – “ipAdEntIfIndex” Object (ipAddrEntry 2)
For some address table entries, the ipAdEntIfIndex object may have a value
greater than ifNumber. In these cases, the ipAdEntIfIndex refers to a proprietary
interface which is not currently implemented by the interface group of MIB II.
IP Group – “ipRouteTable” Object (ip 21)
The routing table used by the DSU/CSU is supported as a read/write table.
Entries in this table may be added, deleted, or changed. You should exercise
great caution when adding or modifying routes in the ipRoutingTable. In general,
it should not be necessary to add or modify routes in the DSU/CSU. In those
cases where it is deemed necessary, the routes should only be added to the
connected device (i.e., the device closest to the destination). Internal routing
mechanisms will propagate the route to the other devices.
An existing route may be effectively deleted by setting the ipRouteType object to
“invalid” for the entry to be deleted. An existing route may be modified by
changing fields in the desired entry (indexed by ipRouteDest) of the routing table.
A new route may be added by specifying values for a table entry for which the
index (“ipRouteDest”) does not already exist.
To add a route using an SNMP set, you must specify a group of minimal objects.
These variable bindings must be contained in a single Protocol Data Unit (PDU).
The objects are described in more detail in the following sections. The minimal
set consists of:
H
H
ipRouteDest
ipRouteIfIndex
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SNMP MIB Objects
The following objects are defaulted if not specified in the set PDU used to add a
route.
H
H
H
H
ipRouteMetric1 – Defaulted to 1 hop.
ipRouteMetric2 – Defaulted to –1 for standalone devices.
ipRouteType – Defaulted to indirect.
ipRouteMask – Defaulted as specified in the MIB description.
The following objects are unused in the DSU/CSU and setting them will have no
effect on the operation of the IP implementation.
H
H
ipRouteMetric3, ipRouteMetric4, ipRouteMetric5 – Defaulted to –1 as
specified in the MIB.
ipRouteNextHop – Defaulted to 0.0.0.0.
The following read-only objects must not be specified in the set PDU used to add
a route.
H
H
H
ipRouteProto – Set to netmgmt(3) by software.
ipRouteAge – Defaulted to 999.
ipRouteInfo – Set to OBJECT IDENTIFIER {0, 0} since it is unused.
IP Group – “ipRouteDest” Object (ipRouteEntry 1)
The ipRouteDest object serves as the index to the routing table. Since indexes for
tables must be unique, only one route per destination may appear in the table. To
ensure that no duplicate destinations appear in the routing table, the ipRouteDest
object of the ipRouteTable will be treated as described in RFC 1354 (IP
Forwarding Table MIB):
“The destination IP address of this route. An entry with a value of 0.0.0.0 is
considered a default route. This object may not take a Multicast (Class D)
address value. Any assignment (implicit or otherwise) of an instance of this object
to a value x must be rejected if the bitwise logical–AND of x with the value of the
corresponding instance of the ipForwardMask object is not equal to x.”
IP Group – “ipRouteIfIndex” Object (ipRouteEntry 1)
When the routing table is displayed, the ipRouteIfIndex object for some entries
may have a value greater than ifNumber. In these cases, the ipRouteIfIndex
refers to a proprietary interface which is not currently implemented by the
interface group of MIB II. Route entries with an unrecognized ipRouteIfIndex
value should not be deleted.
When setting this object via SNMP, the ipRouteIfIndex value can only assume an
appropriate value of ifIndex defined for the particular device type.
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SNMP MIB Objects
IP Group – “ipRouteMetric2” Object (ipRouteEntry 4)
For standalone devices, ipRouteMetric2 is not used and contains –1.
When adding a route to the routing table using SNMP, do not specify a value for
ipRouteMetric2.
IP Group – “ipRouteProto” Object (ipRouteEntry 9)
This object is a read-only object and may have the following values in the
DSU/CSU.
H
H
other(1) – Temporary route added by IP.
local(2) – Route added or modified as a result of user configuration via the
front panel.
H
H
netmgmt(3) – Route added or modified by means of an SNMP set.
icmp(4) – Route added or modified by Internet Control Management Protocol
(ICMP).
H
rip(8) – Route added or modified by Routing Information Protocol (RIP) or
similar proprietary protocol.
IP Group – “ipRouteAge” Object (ipRouteEntry 10)
This object is implemented as a read-only object in the DSU/CSU. In the
DSU/CSU, it reflects the value of the route’s time-to-live (in seconds). When
displays, a value of 999 represents a route that is retained permanently. For
temporary routes, the ipRouteAge object decrements over time. All routes added
via an SNMP set of the ipRouteTable are considered permanent routes. These
routes do not age, but will remain unless deleted via SNMP.
ICMP Group, MIB II
The ICMP Group objects are fully supported by the DSU/CSU.
TCP Group, MIB II
The TCP Group objects are fully supported by the DSU/CSU, with the exception
of the tcpConnState object, which will be read-only.
UDP Group, MIB II
The User Datagram Protocol (UDP) Group objects are fully supported by the
DSU/CSU.
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SNMP MIB Objects
Transmission Group, MIB II
Objects in the transmission group are supported on the network and DTE
Drop/Insert (DSX-1) interfaces, the COM port, and the synchronous data ports.
The objects in the transmission group are not defined within MIB II, but rather
through other Internet standard MIB definitions. The following two transmission
group objects are supported by the DSU/CSU.
H
H
ds1 (transmission 18) – The transmission object supported on the T1
interfaces.
rs232 (transmission 33) – The transmission object supported on the
synchronous data ports and the COM port.
The “ds1” transmission object is defined by the DS1/E1 MIB. The rs232
transmission object is defined by the RS-232-like MIB.
SNMP Group, MIB II
The SNMP Group objects that apply to a management agent are fully supported
by the DSU/CSU. The following objects apply only to an NMS and return a zero
value if accessed.
H
snmpInTooBigs (snmp 8)
H
H
H
H
H
H
H
H
H
snmpInNoSuchNames (snmp 9)
snmpInBadValues (snmp 10)
snmpInReadOnlys (snmp 11)
snmpInGenErrs (snmp 12)
snmpInGetResponses (snmp 18)
snmpInTraps (snmp19)
snmpOutGetRequests (snmp 25)
snmpOutGetNexts (snmp 26)
snmpOutSetRequests (snmp 27)
DS1/E1 MIB (RFC 1406)
The “ds1” object defined by RFC 1406 is supported for both the network and DTE
Drop/Insert (DSX-1) interfaces. The DS1 Near End Group and DS1 Fractional
Group are supported for both interfaces. The DS1 Far End Group is not
supported.
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SNMP MIB Objects
Near End Group, DS1/E1 MIB
The DS1 Near End Group consists of the following four tables:
H
H
H
H
DS1 Configuration
DS1 Current
DS1 Interval
DS1 Total
All four tables are fully supported for the network interface. Since statistics are not
kept for the DTE Drop/Insert (DSX-1) interface, only the DS1 Configuration table
is fully supported. The “statistic” objects for the DTE Drop/Insert (DSX-1) interface
entry in the DS1 Current, DS1 Interval, and DS1 Total tables are always zero
(null). The following sections provide clarification for objects contained in the Near
End Group when it is not clear how the object definition in the DS1/E1 MIB is
related to the DSU/CSU.
Near End Group – “dsx1TimeElapsed” Object (dsx1ConfigEntry 3)
Applies to the network interface only. An error status is returned if access is
attempted for the DTE Drop/Insert (DSX-1) interface.
Near End Group – “dsx1ValidIntervals” Object (dsx1ConfigEntry 4)
Applies to the network interface only. An error status is returned if access is
attempted for the DTE Drop/Insert (DSX-1) interface.
Near End Group – “dsx1LineType” Object (dsx1ConfigEntry 5)
This object corresponds to the NET Framing/DTE Framing configuration options
for the T1 interfaces on the DSU/CSU. Only the following values are supported by
the DSU/CSU.
H
H
dsx1ESF(2) – Indicates ESF framing.
dsx1D4(2) – Indicates D4 framing.
Near End Group – “dsx1LineCoding” Object (dsx1ConfigEntry 6)
This object corresponds to the NET Coding/DTE Coding configuration options for
the T1 interfaces on the DSU/CSU. Only the following values are supported by
the DSU/CSU.
H
H
dsx1B8ZS(2) – Indicates B8ZS line coding.
dsx1AMI(5) – Indicates AMI line coding.
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SNMP MIB Objects
Near End Group – “dsx1SendCode” Object (dsx1ConfigEntry 7)
This object specifies the test patterns/codes being sent over the network
interface. These tests are not supported on the DTE Drop/Insert (DSX-1)
interface. Only the following values are supported by the DSU/CSU.
H
dsx1SendNoCode(1) – Specifies that the interface is sending normal or
looped data. Setting the interface to this value stops an active “send pattern”
test on the interface. This is the only value supported by the DTE Drop/Insert
(DSX-1) interface.
H
H
H
dsx1SendLineCode(2) – Specifies that the network interface is sending a
Remote Loopback (Rlpbk) LLBUP code. The code is sent for 10 seconds.
dsx1SendResetCode(4) – Specifies that the network interface is sending
Remote Loopback (Rlpbk) LLBDN code. The code is sent for 10 seconds.
dsx1SendQRS(5) – Specifies that the network interface is sending a QRSS
test pattern. The pattern is sent until the test is halted (i.e., setting to
dsx1SendNoCode).
H
dsx1SendOtherTestPattern(8) – Specifies that the network interface is
sending a 1-in-8 test pattern. The pattern is sent until the test is halted (i.e.,
setting to dsx1SendNoCode).
Near End Group – “dsx1CircuitIdentifier” Object (dsx1ConfigEntry 8)
This object is only supported on the Net T1 Interface.
Near End Group – “dsx1LoopbackConfig” Object (dsx1ConfigEntry 9)
This object specifies the loopback state of the T1 interfaces. Only the following
values are supported by the DSU/CSU.
H
H
dsx1NoLoop(1) – The T1 interface is not in a loopback state.
dsx1PayloadLoop(2) – Specifies that a Payload Loopback (PLB) is active for
the network interface or a Repeater Loopback (RLB) is active for the DTE
Drop/Insert (DSX-1) interface.
H
dsx1LineLoop(3) – Specifies that a Line Loopback (LLB) is active for the
network interface or a DTE Loopback (DLB) is active for the DTE Drop/Insert
(DSX-1) interface.
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SNMP MIB Objects
Near End Group – “dsx1LineStatus” Object (dsx1ConfigEntry 10)
This object specifies the line (alarm) status of the T1 interfaces. Only the
following values are supported by the DSU/CSU. More than one value may be
active at a time.
H
H
H
H
dsx1NoAlarm(1) – No alarm present.
dsx1RcvFarEndLOF(2) – A yellow alarm signal is being received.
dsx1RcvAIS(8) – An Alarm Indication Signal (AIS) is being received.
dsx1LossOfFrame(32) – An Out Of Frame condition has persisted for more
that 2.5 seconds (i.e., Red Alarm).
H
H
H
dsx1LossOfSignal(64) – A Loss of Signal condition has persisted for more
that 2.5 seconds (i.e., Red Alarm).
dsx1LoopbackState(128) – The near end of the T1 interface is in a loopback
state.
dsx1Other Failure(4096) – An Excessive Error Rate (EER) has been
detected on the network interface.
Near End Group – “dsx1SignalMode” Object (dsx1ConfigEntry 11)
This object specifies whether Robbed Bit Signaling (RBS) is being used. This
object differs from the MIB definition in that it is “read-only” (not read/write) for
DSU/CSUs. Only the following values are supported by the DSU/CSU.
H
H
none(1) – No signaling is being used on this interface.
robbedBit(2) – Robbed Bit Signaling is being used on at least one DS0 on
this T1 interface.
Near End Group – “dsx1TransmitClockSource” Object (dsx1ConfigEntry 12)
This object specifies the timing source for the transmit clock for this T1 interface.
This object differs from the MIB definition in that it is “read-only” (not read/write)
for DSU/CSUs. Only the following values are supported by the DSU/CSU.
H
H
H
loopTiming(1) – The recovered receive clock is being used as the transmit
clock.
localTiming(2) – The DSU/CSU’s internal clock is used being as the transmit
clock.
ThroughTiming(3) – The recovered receive clock from another interface (e.g.,
T1, Port, or External) is being used as the transmit clock.
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SNMP MIB Objects
Near End Group – “dsx1Fdl” Object (dsx1ConfigEntry 13)
This object specifies how Facility Data Link is being used. Only the following
values are supported by the DSU/CSU. More than one value may be active at a
time.
H
H
dsx1other(1) – SNMP data is being sent over FDL.
dsx1Ansi-T1-403(2) – ANSI PRMs are supported on the network interface as
specified by ANSI T1.403.
H
H
dsx1Att-54016(4) – FDL supports the requirements specified by AT&T
publication TR54016.
dsx1Fdl-none(8) – Indicates that the device does not use FDL. This is the
only value that applies to the DTE Drop/Insert (DSX-1) interface.
Near End Group – The DS1 Current Table Objects (dsx1CurrentEntry)
The following DS1 current table objects are provided for the network interface
only. Objects in the table that are not listed are not supported and will return an
error status if access is attempted.
H
H
H
H
H
H
dsx1CurrentIndex – The index that identifies the T1 interface.
dsx1CurrentESs – Errored Seconds for the current interval.
dsx1Current SESs – Severely Errored Seconds for the current interval.
dsx1CurrentUASs – Unavailable Seconds for the current interval.
dsx1CurrentCSSs – Controlled Slip Seconds for the current interval.
dsx1CurrentBESs – Bursty Errored Seconds for the current interval.
Near End Group – The DS1 Interval Table Objects (dsx1IntervalEntry)
The following DS1 interval table objects are provided for the network interface
only. Objects in the table that are not listed are not supported and will return an
error status if access is attempted.
H
H
H
H
H
H
H
dsx1IntervalIndex – The index that identifies the T1 interface.
dsx1IntervalNumber – The interval number (1 to 96).
dsx1IntervalESs – Errored Seconds for the interval.
dsx1Interval SESs – Severely Errored Seconds for the interval.
dsx1IntervalUASs – Unavailable Seconds for the interval.
dsx1IntervalCSSs – Controlled Slip Seconds for the interval.
dsx1Interval BESs – Bursty Errored Seconds for the interval.
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SNMP MIB Objects
Near End Group – The DS1 Total Table Objects (dsx1TotalEntry)
The following DS1 total table objects are provided for the network interface only.
Objects in the table that are not listed are not supported and will return an error
status if access is attempted.
H
H
H
H
H
H
dsx1TotalIndex – The index that identifies the T1 interface.
dsx1TotalESs – The 24-hour total Errored Seconds.
dsx1Total SESs – The 24-hour total Severely Errored Seconds.
dsx1TotalUASs – The 24-hour total Unavailable Seconds.
dsx1TotalCSSs – The 24-hour total Controlled Slip Seconds.
dsx1TotalBESs – The 24-hour total Bursty Errored Seconds.
Far End Group, DS1/E1 MIB
The DS1 Far End Group consists of the following three tables:
H
H
H
DS1 Far End Current
DS1 Far End Interval
DS1 Far End Total
These tables are not supported for either the network or DTE Drop/Insert (DSX-1)
interface.
DS1 Fractional Group, DS1/E1 MIB
The DS1 Fractional Group consists of the DS1 fractional table. This table
(dsx1FracTable) is fully supported by the DSU/CSU and allows channel (time
slots) to be mapped between the T1 interfaces and data ports. If an invalid
channel map (e.g., two interfaces mapped to a single time slot, one interface
mapped to two T1s, etc.) is received, an error will be returned to the SNMP
manager. The DSU/CSU will validate all channel configurations before applying
them.
Operational Note: The fractional T1 group only allows specification of an entire
interface to a particular time slot on another interface (i.e., a time slot on one
interface cannot be mapped to a time slot on another interface). This prevents
complete mapping of time slots on the DTE Drop/Insert (DSX-1) interface to time
slots on the network interface. For mapping time slots between the network and
DTE T1 interfaces, the following convention is used: Time slots on the T1
interface that are mapped to another T1 interface (i.e., not a data port) are
connected in ascending order. For example, if the fractional table for the network
interface maps time slots 1, 3 and 5 to the DTE T1 interface and the DTE T1
interface maps time slots 10, 11 and 15 to the network the following time slots will
be connected: N1 to D10, N3 to D11 and N5 to D15.
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SNMP MIB Objects
RS-232-like MIB (RFC 1317)
The “rs232” object defined by RFC 1317 is supported for the synchronous data
ports and the COM port. The RS-232-like MIB consists of one object and five
tables, as follows:
H
H
H
H
H
H
Number of RS-232-like ports
The General Port Table
The Asynchronous Port Table
The Synchronous Port Table
The Input Signal Table
The Output Signal Table
The Asynchronous Port table is not supported by the DSU/CSU for the
synchronous data ports. The Input Signal and Output Signal tables are not
supported for the COM port. The following sections provide clarification for
objects contained in the RS-232-like MIB when it is not clear how the object
definition in MIB is related to the DSU/CSU.
Number of Ports – “rs232Number” Object (rs232 1)
This object contains the number of ports in the RS-232-like general port table.
This number is 3 for the 3162.
General Port Table, RS-232-like MIB
The general port table contains general configuration objects for the RS-232-like
interfaces.
General Port Table – “rs232PortIndex” Object (rs232PortEntry 1)
This object contains a unique value for each port and is used as an index into the
general port table (rs232PortTable). The values of the rs232PortIndex object vary
between models and are listed below.
The values of rs232PortIndex for the 3162 DSU/CSU are:
H
H
H
1 – COM port
4 – DCE port 1
5 – DCE port 2
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SNMP MIB Objects
General Port Table – “rs232PortType” Object (rs232PortEntry 2)
This object is used to identify the port’s hardware type. Only the following values
are supported by the DSU/CSU.
H
H
rs232(2) – Used to identify the COM port.
rs422(3) – Used to identify synchronous data ports that are configured as
EIA-530-A or RS-449.
H
V35(5) – Used to identify synchronous data ports that are configured as V.35.
General Port Table – “rs232PortInSigNumber” Object (rs232PortEntry 3)
This object contains the number of input signals contained in the input signal
table. This is the number of signals that can be detected. This number is 2 for the
synchronous data ports and 0 for the COM port.
General Port Table – “rs232PortOutSigNumber” Object (rs232PortEntry 4)
This object contains the number of output signals contained in the output signal
table. This is the number of signals that can be asserted. This number is 2 for the
synchronous data ports and 0 for the COM port.
General Port Table – “rs232PortInSpeed” Object (rs232PortEntry 5)
This object contains the port’s input speed in bits per second. For the DSU/CSU,
the rs232PortInSpeed object has the same value as the rs232PortOutSpeed
object. The input speed of a synchronous data port is determined by the channel
configuration and cannot be changed through this object. Thus, for the
synchronous data ports, this object is read-only. The input speed of the COM port
is the currently configured speed. Setting of this value for the COM port causes
the configured port speed to be changed.
General Port Table – “rs232PortOutSpeed” Object (rs232PortEntry 6)
This object contains the port’s output speed in bits per second. For the
DSU/CSU, the rs232PortInSpeed object has the same value as the
rs232PortOutSpeed object. The input speed of a synchronous data port is
determined by the channel configuration and cannot be changed through this
object. Thus, for the synchronous data ports, this object is read-only. The input
speed of the COM port is the currently configured speed. Setting of this value for
the COM port causes the configured port speed to be changed.
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SNMP MIB Objects
Asynchronous Port Table, RS-232-like MIB
The asynchronous port table contains an entry for the COM port when the port is
configured for asynchronous operation. For the DSU/CSU, the entries in the table
that are counters (rs232AsyncPortEntry 6–8) are used to collect statistics and are
not supported.
Asynchronous Port Table, “rs232AsyncPortBits” (rs232AsyncPortEntry 2)
This object specifies the number of bits in a character. Only the following values
are supported by the DSU/CSU.
H
H
7 – 7-bit characters. Supported on the COM port only.
8 – 8-bit characters.
Asynchronous Port Table, “rs232AsyncPortStopBits”
(rs232AsyncPortEntry 3)
This object specifies the number of stop bits supported. Only the following values
are supported by the DSU/CSU.
H
H
H
one(1) – One stop bit.
two(2) – Two stop bits. Supported on the COM port only.
one-and-half(3) – One and a half stop bits. Supported on the COM port only.
Asynchronous Port Table, “rs232AsyncPortParity” (rs232AsyncPortEntry 4)
This object specifies the parity used by the port. Only the following values are
supported by the DSU/CSU.
H
H
H
none(1) – No parity bit.
odd(2) – Odd parity. Supported on the COM port only.
even(3) – Even parity. Supported on the COM port only.
Asynchronous Port Table, “rs232AsyncPortAutoBaud”
(rs232AsyncPortEntry 5)
This object specifies the ability to automatically sense the input speed of the port.
Only the following value is supported by the DSU/CSU.
H
disabled(2) – Autobaud is not supported.
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SNMP MIB Objects
Synchronous Port Table, RS-232-like MIB
The synchronous port table contains an entry for each of the synchronous data
ports and the COM port when the port is configured for synchronous operation.
For the DSU/CSU, the entries in the table that are counters (rs232SyncPortEntry
3–7) are used to collect statistics and are not supported.
Synchronous Port Table – “rs232SyncPortClockSource”
(rs232SyncPortEntry 2)
This object specifies the clock source for the port. Only the following values are
supported by the DSU/CSU.
H
H
internal(1) – The port uses an internal clock.
external(2) – The port uses an external clock.
Input Signal Table, RS-232-like MIB
This table contains entries for the input signals that can be detected by the unit
for each of the synchronous data ports.
Input Signal Table – “rs232InSigName” (rs232InSigEntry 2)
This object contains the identification of a hardware input signal. Only the
following values are supported by the DSU/CSU.
H
H
rts(1) – Request-To-Send.
dtr(4) – Data Terminal Ready.
Input Signal Table – “rs232InSigState” (rs232InSigEntry 3)
This object contains the current signal state. Only the following values are
supported by the DSU/CSU.
H
H
on(2) – The signal is asserted.
off(3) – The signal is not asserted.
Input Signal Table – “rs232InSigChanges” (rs232InSigEntry 4)
This object is not supported by the DSU/CSU.
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SNMP MIB Objects
Output Signal Table, RS-232-like MIB
This object contains entries for the output signals that can be asserted by the unit
for each of the synchronous data ports.
Output Signal Table – “rs232OutSigName” (rs232OutSigEntry 2)
This object contains the identification of a hardware output signal. Only the
following values are supported by the DSU/CSU.
H
H
cts(1) – Clear-To-Send.
dsr(4) – Data Set Ready.
Output Signal Table – “rs232OutSigState” (rs232OutSigEntry 3)
This object contains the current signal state. Only the following values are
supported by the DSU/CSU.
H
H
on(2) – The signal is asserted.
off(3) – The signal is not asserted.
Output Signal Table – “rs232OutSigChanges” (rs232OutSigEntry 4)
This object is not supported by the DSU/CSU.
Generic-Interface MIB Extensions (RFC 1229)
This generic-interface MIB is an experimental MIB that provides extensions to the
generic interface group defined in MIB II. This MIB describes three tables:
H
H
H
Generic Interface Extension Table
Generic Interface Test Table
Generic Receive Address Table
Only the generic interface test table is supported by the DSU/CSU. This table is
supported for the network interface only.
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SNMP MIB Objects
Generic Interface Test Table, Generic Interface MIB
The test table provides access to additional tests (loopbacks and pattern tests)
that are not in the interface group of MIB II.
Generic Interface Test Table – “ifExtnsTestType” Object (ifExtnsTestEntry 4)
This object is a control variable used to start and stop operator-initiated tests on
the interface. It provides the capability to:
H
H
H
Start/stop the Monitor QRSS test pattern on the network interface.
Start/stop the Send QRSS/511 test pattern on a synchronous data port.
Start sending a V.54/FT1 UP/DOWN code to the remote unit for a
synchronous data port.
H
H
Start/stop the Monitor QRSS/511 test pattern on a synchronous data port.
Start/stop the DCLB/DTLB loopback test on a synchronous data port.
The following object identifiers are used to control the tests on the interface.
H
H
noTest – Stops the test in progress on the interface.
testFullDuplexLoopBack – Initiates a DCLB on the interface. Only supported
for the data ports.
H
H
H
H
H
H
H
H
H
testLoopDTLB – Initiates a DTLB on the interface. Only supported for the
data ports.
testMonQRSS – Initiates a Monitor QRSS test on the interface. Supported for
the data ports and the network interface.
testMon511 – Initiates a Monitor 511 test on the interface. Only supported for
the data ports.
testSendQRSS – Initiates a Send QRSS test on the interface. Only supported
for the data ports.
testSend511 – Initiates a send 511 test on the interface. Only supported for
the data ports.
testSendV54Up – Sends a V54 up code to the remote unit. Only supported
for the data ports.
testSendV54Down – Sends a V54 down code to the remote unit. Only
supported for the data ports.
testSendFT1Up – Sends a FT1 up code to the remote unit. Only supported
for the data ports.
testSendFT1Down – Sends a FT1 down code to the remote unit. Only
supported for the data ports.
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SNMP MIB Objects
Where these object identifiers are defined as follows:
H
H
H
H
H
H
H
H
H
testLoopDTLB – OBJECT IDENTIFIER ::= [wellKnownTests 2]
testMonQRSS – OBJECT IDENTIFIER ::= [wellKnownTests 3]
testMon511 – OBJECT IDENTIFIER ::= [wellKnownTests 4]
testSendQRSS – OBJECT IDENTIFIER ::= [wellKnownTests 5]
testSend511 – OBJECT IDENTIFIER ::= [wellKnownTests 6]
testSendV54Up – OBJECT IDENTIFIER ::= [wellKnownTests 7]
testSendV54Down – OBJECT IDENTIFIER ::= [wellKnownTests 8]
testSendFT1Up – OBJECT IDENTIFIER ::= [wellKnownTests 9]
testSendFT1Down – OBJECT IDENTIFIER ::= [wellKnownTests 10]
Generic Interface Test Table – “ifExtnsTestResult” Object
(ifExtnsTestEntry 5)
This object contains the result of the most recently requested test. Only the
following values are supported by the DSU/CSU.
H
H
H
H
none(1) – No test currently active.
inProgress(3) – A test is currently in progress.
notSupported(4) – The requested test is not supported.
unAbleToRun(5) – The requested test cannot run due to the state of the unit.
Generic Interface Test Table – “ifExtnsTestCode” Object
(ifExtnsTestEntry 6)
This object contains a code that contains more specific information on the test
result. This object is defined as an object identifier. Only the following values are
supported by the DSU/CSU.
H
H
H
H
none – No further information is available. Used for the send pattern/code
and loopback tests.
inSyncNoBitErrors – A monitor pattern (QRSS or 511) test has synchronized
on the pattern and has not detected any bit errors.
inSyncWithBitErrors – A monitor pattern (QRSS or 511) test has
synchronized on the pattern and has detected bit errors.
notInSync – A monitor pattern (QRSS or 511) test has not synchronized on
the requested pattern.
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SNMP MIB Objects
Where these object identifiers are defined as follows:
H
H
H
H
H
wellKnownCodes – OBJECT IDENTIFIER ::= [ifExtensions 5]
none – OBJECT IDENTIFIER ::= [wellKnownCodes 1]
inSyncNoBitErrors – OBJECT IDENTIFIER ::= [wellKnownCodes 2]
inSyncWithBitErrors – OBJECT IDENTIFIER ::= [wellKnownCodes 3]
notInSync – OBJECT IDENTIFIER ::= [wellKnownCodes 4]
Enterprise MIB
The variable devConfigAreaCopy under the devConfigAreaCopy group in the
common area of the Enterprise MIB will be fully supported. This variable allows
the entire contents of one configuration area to be copied into another
configuration area.
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IP Network Addressing Scenario
F
Overview
This appendix describes a means of configuring 31xx Series devices in an
Internet Protocol (IP) network to provide SNMP or Telnet connectivity. Since there
are many possible network addressing schemes, this appendix describes an
addressing scheme for typical customer network management system (NMS)
scenarios. This appendix is not intended to be an IP addressing or routing
tutorial, and a basic understanding of IP and 31xx Series devices is assumed.
The following notes apply to these scenarios:
H
H
Connections to remote devices may be via EDL or FDL; however, the FDL is
only available on full T1 links (not fractional T1s). Check with the service
provider to be sure that the FDL is end-to-end (i.e., not terminated at an
intermediate point within the network).
Interconnected 31xx Series devices automatically pass routing information
between them; however, a static route to the subnet(s) must be set in the
routing table of the NMS host. This route uses the 31xx Series device
connected to the LAN or the NMS (via a direct PPP or SLIP connection) as a
gateway to the subnet(s). In all instances, the addressing scheme presented
works for both the LAN and the direct connections.
H
H
H
Although routing table entries are maintained automatically by 31xx Series
devices, without the need for user configuration, only a maximum of
100 routes is supported for a given device.
The choice of a host address within a given subnet is completely arbitrary.
Choose any legal host address for a given subnet, without regard to the local
or remote devices.
Although the default route (to the NMS) is configurable for all devices, only
devices that have a direct external connection to an NMS need a default
route set.
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IP Network Addressing Scenario
Standalone at the Central Site
The first scenario (Figure F-1) shows a 3162 DSU/CSU at the central site, with
remotes connected via the FDL. In this scenario, all 31xx Series devices are on
the same subnet (135.18.1.0). The subnet mask for each device is
255.255.255.00. A static route is set in the NMS host to subnet 135.18.1.0.
ETHERNET
135.18.40.1
135.18.1.2
135.18.1.3
NETWORK
SUBNET 135.18.40.0
10 BaseT PORT IP ADDRESS: 135.18.40.2
135.18.1.4
135.18.1.5
SUBNET 135.18.1.0
135.18.1.1
99-16640
Figure F-1. Standalone at the Central Site
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IP Network Addressing Scenario
Local Carrier with Remote Standalone
The second scenario (Figure F-2) is a carrier communicating with standalone
remotes. All devices are still on the same subnet, and the subnet mask is
255.255.255.00. A static route still must be set in the NMS host to subnet
135.18.2.0.
ETHERNET
135.18.40.1
135.18.2.17
135.18.2.18
NETWORK
LAN
ADAPTER
SUBNET 135.18.40.0
COM IP ADDRESS: 135.18.40.3
FT1
SUBNET 135.18.2.0
T1
135.18.2.26
135.18.2.1
C
O
M
S
P
H
E
R
E
3
0
0
0
135.18.2.16
496-14646-02
Figure F-2. Local Carrier with Remote Standalone
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IP Network Addressing Scenario
Local and Remote Carriers — Different Subnets
This third scenario (Figure F-3) shows a local carrier connected to remote
carriers that have remote standalones. Each carrier must be on a separate
subnet but, as in the previous scenario, the carrier-remote combination can share
a common subnet. Once again, the subnet mask is 255.255.255.00 for all
devices. A static route must be set up in the NMS host for each subnet:
135.18.4.0, 135.18.6.0, 135.18.20.0.
135.18.6.22
135.18.6.34
135.18.20.23
T1
T1
T1
T1
135.18.20.1 . . . . 135.18.20.16
135.18.6.1 . . . . 135.18.6.16
135.18.20.45
C
C
O
O
M
M
S
S
P
P
H
H
E
E
R
R
E
E
3
3
0
0
0
0
0
0
SUBNET 135.18.6.0
SUBNET 135.18.20.0
T1
ETHERNET
T1
LAN
ADAPTER
COM IP
ADDRESS:
135.18.40.4
135.18.4.1 . . . . 135.18.4.16
135.18.40.1
C
O
M
S
P
H
E
R
E
3
0
0
0
SUBNET 135.18.40.0
SUBNET 135.18.4.0
Figure F-3. Local Carrier Connected to Remote Carriers
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IP Network Addressing Scenario
Local and Remote Carriers — Same Subnet
An alternative addressing scheme, for the network is shown in Figure F-4. This
example uses a subnet mask of 255.255.00.00 for the COM port in the
central-site carrier (only), with all of the remaining subnet masks set to
255.255.255.00. The advantage to this scheme is that only one route must be
added to the NMS host (135.18.0.0).
135.19.6.22
135.19.20.23
T1
T1
COMSPHERE 3610
COMSPHERE 3610
T1
T1
COMSPHERE 3610
COMSPHERE 3610
135.19.20.1 . . . . 135.19.20.16
135.19.6.1 . . . . 135.19.6.16
135.19.6.34
135.19.20.45
C
C
O
O
M
M
S
S
P
P
H
H
E
E
R
R
E
E
3
3
0
0
0
0
0
0
T1
ETHERNET
T1
COM IP
ADDRESS:
135.18.40.4
LAN
ADAPTER
COM
SUBNET MASK:
FF:FF:00:00
135.19.1.1 . . . . 135.19.1.16
135.18.40.1
C
O
M
S
P
H
E
R
E
3
0
0
0
SUBNET 135.18.40.0
SUBNET 135.19.0.0
496-14648-02
Figure F-4. Local Carrier Connected to Remote Carriers – an Alternative
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IP Network Addressing Scenario
Multiple NMSs
Figure F-5 illustrates multiple COM ports on the same carrier connected to
different NMSs. This might be used in service-provider applications, where some
of the carrier’s circuit cards (and their remotes) are managed by one NMS and
other cards are managed by a different NMS. In this example, each card and
remote is on a separate subnet. Also, note that each LAN Adapter connection is
on a different subnet. The subnet mask is 255.255.255.00. The NMS hosts would
only need routes added for the subnets that they are to manage.
SUBNET 135.18.23.0
SUBNET 135.18.34.0
COMSPHERE 3610
C O M S P H E R E 3 6 1 0
T1
T1
135.18.23.2
135.18.34.2
COM IP
ADDRESS:
135.140.22.95
COM IP
ADDRESS:
135.18.40.5
135.18.22.1 . . . . 135.18.37.1
LAN
ADAPTER
LAN
ADAPTER
C
O
M
S
P
H
E
R
E
3
0
0
0
135.140.22.79
135.18.40.1
ETHERNET
ETHERNET
SUBNET 135.140.22.0
SUBNET 135.18.40.0
496-14649-02
Figure F-5. Multiple COM Ports Connected to Different NMSs
August 2000
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Equipment List
G
Equipment
Feature Number
3162-A4-210
3100-F1-500
3100-F1-510
3100-F1-550
Model 3162 DSU/CSU
T1 Line Interface Cable, RJ48C-to-RJ48C
T1 Line Interface Cable, RJ48C-to-DA15P (Canada)
COM Port-to-PC Cable, 8-pin modular to DB9S
COM Port-to-Terminal/Printer Cable, 8-pin modular to DB25P 3100-F1-540
EIA-530-A-to-RS449/422 Adapter
EIA-530-A-to-V.35 Adapter
3100-F1-580
3100-F1-570
3100-F1-571
3100-F1-400
EIA-530-A-to-X.21 Adapter
Wall-Mount/Rack-Mount Adapter
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Equipment List
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Glossary
1in8 Test
A test pattern consisting of a one (1) followed by seven zeros (on the network only).
A 10-Mbps Ethernet LAN that works on twisted-pair wiring.
10BaseT
3000 Series Carrier
ACCULINK
ACO
A rack-mounted device containing 17 slots in which to place circuit cards.
A product family and a registered trademark of Paradyne.
Alarm Cut-off command. A command for carrier-mounted CSUs that forces a deactivation
of the alarm relay on the 3000 Series Carrier.
adapter
Hardware that provides some transitional function between two or more devices.
A symbol (usually numeric) that identifies the interface attached to a network.
address
agent (SNMP)
A software program housed within a device to provide SNMP functionality. Each agent
stores management information and responds to the manager’s request for this
information.
AIS
Alarm Indication Signal. An all ones signal transmitted to maintain transmission continuity
and to indicate to the receiving terminal that a transmission fault exists at either the
transmitting terminal or upstream of the transmitting signal. Sometimes referred to as Blue
Alarm.
AMI
Alternate Mark Inversion. A line coding technique used to accommodate the ones density
requirements of E1 or T1 lines.
ANSI
American National Standards Institute. A member of ISO, ANSI accredits and implements
standards.
application
ASCII
The use to which a device is put.
American Standard Code for Information Interchange. The standard for data transmission
over telephone lines. A 7-bit code establishes compatibility between data services. The
ASCII code consists of 32 control characters (nondisplayed) and 96 displayed characters.
ASCII
terminal/printer
A device that can be attached, either locally or remotely, to a DSU/CSU to display or print
alarm messages.
asynchronous data
Data that is formatted so it is synchronized by a transmission start bit at the beginning of a
character and one or more stop bits at the end.
authenticationFailure
trap
An SNMP trap that indicates that the device has received an SNMP protocol message that
has not been properly authenticated.
Auxiliary Backplane
An 8-slot backplane that fits over one half of the open section of the 3000 Series Carrier.
This is a passive assembly that provides all interface connectors.
AWG
American Wire Gauge. An indication of wire size. The heavier the gauge, the lower the
AWG number, and the lower the impedance.
B8ZS
Bipolar 8 Zero Substitution. Encoding scheme for transmitting clear channel signals over a
T1 line.
bandwidth
The range of frequencies that can be passed by a transmission medium, or the range of
electrical frequencies a device is capable of handling.
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Glossary
BES
Bursty Error Seconds. A second in which more than one but less than 320 CRC6 error
events have occurred.
bipolar signal
A signal in which successive ones (marks, pulses) are of alternating positive and negative
polarity, and in which a zero (space, no pulse) is of zero amplitude.
bit
Binary digit. The smallest unit of information, representing a choice between a one or a
zero (sometimes called mark or space).
bps
BPV
Bits per second. Indicates the speed at which bits are transmitted across a data
connection.
Bipolar Violation. In a bipolar signal, a one (mark, pulse) which has the same polarity as its
predecessor.
byte
A sequence of successive bits (usually eight) handled as a unit in data transmission.
CCITT
Consultative Committee on International Telegraphy and Telephony. An advisory
committee established by the United Nations to recommend communications standards
and policies. It was renamed ITU in March 1993.
CD
Carrier Detect. The received line signal detector. V.24 circuit 109.
channel
A bidirectional DS0, voice, or data path, for electrical transmission between two or more
points. Also called a circuit, line, link, path, or facility.
CHAP
Challenge Handshake Authentication Protocol. A security technique that allows a user
password to be encrypted for transmission.
character
client
A letter, figure, number, punctuation, or other symbol.
A device that receives a specific service, such as database management, from a server.
A technique used to accommodate the ones density requirements of E1 lines.
coding
community name
An identification used by an SNMP manager to grant an SNMP server access rights to a
MIB.
COMSPHERE
configuration
A proprietary product family name and a registered trademark of Paradyne.
The arrangement of a system or network as defined by the characteristics of its functional
units.
configuration option
CPU fail
Device software that sets specific operating parameters for the device. Sometimes
referred to as straps.
Central Processing Unit failure. A Self-Test Health message indicating a failure in the
device’s central processing unit.
CRC
Cyclic Redundancy Check. A mathematical method of confirming the integrity of received
digital data.
CRC6
CSA
CRC using six check bits.
Canadian Standards Association.
CSU
Channel Service Unit. A device that connects service user equipment such as a DSU to
the local digital telephone loop, protects the line from damage, and regenerates the signal.
CTS
Clear To Send. A signal indicating that the device is ready for the DTE to transmit data.
Usually occurs in response to Request To Send (RTS).
D4
The transmission standard that specifies 12 frames as a superframe that is used for frame
synchronization and to locate signaling bits.
database
An organized compilation of computerized data.
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Glossary
DB15 connector
data carrier
A 15-position connector used on cables or devices.
A continuous frequency signal that can be modulated by another signal that contains
information to be transmitted.
DCE
Data Communications Equipment. The equipment that provides the functions required to
establish, maintain, and end a connection. It also provides the signal conversion required
for communication between the DTE and the network.
default
A factory-preset value that is assumed to be correct unless changed by the user.
DevFail
Device Failure. A message that indicates that an internal failure has been detected by the
operating firmware. An 8-digit code appears for use by service personnel.
device
A mechanical, electrical, or electronic unit with a special purpose.
A signal composed of only two discrete values, representing the binary digits 0 and 1.
A thin, flexible magnetic disk enclosed in a protective jacket.
digital signal
diskette
DLB
DTE Loopback. Loopback mode that loops the information received on the DTE T1
network interface back to the network as close to the network interface as possible.
download
A process that transfers device firmware and software from a locally-attached PC to a
device, or allows the duplication of firmware and software from a local device to a remote
device.
drop/insert
An interconnection point for terminals, multiplexers, and transmission facilities. Individual
channels may be inserted into the aggregate stream or dropped out to accommodate
specific applications.
DS0
DS1
Digital signal level 0 (zero). A 64 kbps digital telecommunications signal or channel.
Digital signal level 1 (one). A digital signal transmitted at the rate of 1.544 Mbps in North
America.
DS1/E1 MIB
DSR
Defines objects for managing E1 interfaces and supports the network and G.703 DTE
interfaces on the E1 NTU.
Data Set Ready. A signal from the modem to the DTE that indicates the modem is turned
ON and connected to the DTE.
DSU
Data Service Unit. Data communications equipment that provides timing, signal
regeneration, and an interface to data terminal equipment. A subrate DSU/CSU is normally
referred to as a DSU.
DSX-1
DTE
Digital Signal Cross Connect level 1. An interconnection point for terminals, multiplexers
and transmission facilities.
Data Terminal Equipment. The equipment, such as a computer or terminal, that provides
data in the form of digital signals for transmission.
DTE interface
DTMF
The DTE interface on the rear panel of the CSU.
Dual-Tone Multi-Frequency. A signaling method using two voice frequencies to designate
the tones used for touch-tone dialing, as distinguished from pulse dialing.
DTR
Data Terminal Ready. A signal from the DTE to the modem, sent via Pin 20 of the
EIA-232 interface (V.24 circuit 108/1, /2), that indicates the DTE is turned ON and
connected to the modem.
E1
A wideband digital interface operating at 2.048 Mbps, defined by ITU recommendations
G.703 and G.704. It is used primarily outside North America.
EER
Excessive Error Rate. An error rate that is greater than the threshold that has been
configured in the device.
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Glossary
Enterprise MIB
MIB objects unique to a specific company’s devices.
A trap unique to a specific company’s devices.
enterprise-specific
trap
EON
error
End of Number.
A discrepancy between a measured or computed value or condition and the true or
specified value or condition.
ES
Errored Seconds. A second with one or more ESF error events (one or more CRC6 error
events or OOFs).
ESD
ElectroStatic Discharge. An undesirable discharge of static electricity that can damage
equipment and degrade electrical circuitry.
ESF
Extended SuperFrame. The T1 transmission standard that specifies 24 frames as an
extended superframe to be used for frame synchronization and to locate signaling bits.
Ethernet
A type of network that supports high-speed communication among systems. It is a widely
implemented standard for LANs. All hosts are connected to a coaxial cable where they
contend for network access using a Carrier Sense, Multiple Access with Collision
Detection (CSMA/CD) paradigm.
failure
fault
An uncorrected hardware error.
An accidental condition that causes a functional unit to fail to perform its required function.
FCC
Federal Communications Commission. The Board of Commissioners that regulates all
electrical communications that originate in the United States.
FDL
Facility Data Link. The selected framing bits in the ESF format used in a wide-area link that
are used for control, monitoring, and testing.
Fractional T1
Individual DS0 channels that may be sold separately or in groups to provide bandwidth
that is some fraction of the total T1 capability.
frame
One identifiable group of bits that includes a sequence of bits for control, framing, etc.
frame relay
A high-speed connection-oriented packet switching WAN protocol using variable-length
frames.
framing
A technique that separates bits into identifiable groups.
Generic-Interface
Extension MIB
An extension to MIB II that defines additional objects for control of generic interfaces in
MIB II.
Get (SNMP)
ground
A command providing read-only access to SNMP MIB objects.
A physical connection to earth or other reference point.
HDLC
High-Level Data Link Control. A communications protocol defined by the International
Standards Organization (ISO).
host
A computer attached to a network that shares its information and devices with the rest of
the network.
Hz
Hertz. A unit of frequency that equals one cycle per second.
ICMP
Internet Control Management Protocol. Internet protocol that allows for the generation of
error messages, tests packets, and information messages related to IP.
IEEE 802.3
interface
A standard for a LAN protocol suite, implemented as Ethernet.
A shared boundary between functional units.
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Glossary
Internet
internetwork
IP address
ISO
The worldwide internetwork, which predominantly uses the TCP/IP protocol.
An interconnected collection of networks (also called an internet).
Internet Protocol address. The address assigned to an internet host.
International Standards Organization.
ITU
International Telecommunications Union. The telecommunications agency of the United
Nations, established to provide standardized communications procedures and practices.
Before March 1993 it was called CCITT.
kbps
LAN
Kilobits per second. One kilobit is usually taken to be 1,024 bits.
Local Area Network. A privately owned and administered data communications network
limited to a small geographic area.
LBO
LCD
Line Build-Out. The amount of attenuation of the transmitted signal that is used to
compensate for the length of wire between the transmitter and the receiver.
Liquid Crystal Display. Thin glass plates containing liquid crystal material. When voltage is
applied, the amount of light able to pass through the glass plates is altered so that
messages can be displayed.
LCP
LED
Link Control Protocol.
Light Emitting Diode. A light or status indicator that glows in response to the presence of a
certain condition (e.g., an alarm).
link
The physical connection between one location and another used for data transmission.
The protocol that regulates the communication between two network nodes.
link layer protocol
link trap
A trap that identifies the condition of the communications interface (linkDown or linkUp
traps).
LLB
LOF
Line LoopBack. A test in which the received signal on the network interface is looped back
to the network without change.
Loss of Frame. Occurs when a DS1 terminal is unable to synchronize on the DS1 signal
for some interval.
LOFC
Loss Of Frame Count. The number of LOFs declared.
loopback test
A test that verifies a device’s operation by connecting the device’s output to the device’s
input.
LOS
LQR
MB
Loss of Signal. The T1 line condition where there are no pulses.
Link Quality Reports.
Megabyte or megabytes. A unit of memory measurement equal to approximately one
million bytes (typically 1,048,576 bytes).
2
Mbps
Megabits per second. One megabit is 1,048,576 (1024 ) bits.
menu tree
The structure containing the menu hierarchy starting at a Top-Level menu and extending
down to various device functions.
MIB
Management Information Base. A database of managed objects used by SNMP to provide
network management information and device control.
MIB II
module
MIB Release 2. The current Internet-standard MIB, defined by RFC 1213.
A compact assembly functioning as a component in a larger system or unit.
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Glossary
MRU
Maximum Request Unit.
network
A configuration of data processing devices used for information exchange.
The T1 network interface connector on the rear panel of the CSU.
network interface
NMS
Network Management System. A computer system used for monitoring and controlling
network devices.
node
A connection or switching point on the network.
object (SNMP)
OOF
A specific item within a Management Information Base (MIB).
Out Of Frame. An error condition in which frame synchronization bits are in error.
option
A hardware or software function that can be selected or enabled as part of a configuration
process.
PAP
Password Authentication Protocol. A security technique that requires a user password for
access to a system.
parity
payload
PBX
A way of checking data accuracy by counting the number of bits that have a value of one.
The information bits in a frame.
Private Branch Exchange. Telephone switching equipment dedicated to one customer. A
PBX connects private telephones to each other and to the public dial network.
PC
Personal Computer.
PDU
PDV
Protocol Data Unit. A message containing protocol-specific information.
Pulse Density Violation. The number of ones (marks, pulses) is not adequate for the line
requirement.
PLB
Payload Loopback. Loopback mode that loops the information received on the T1 network
interface back to the network after it has passed through receive and transmit framing
section.
port
An access point for data entry or exit.
The power input connector on the CSU.
POWER connector
power-on self-test
A test that checks most hardware components when power is applied to the device or a
reset is initiated.
PPP
Point-to-Point Protocol. A protocol for packet transmission over serial links, specified by
Internet RFC 1661.
PRM
Performance Report Messages. Messages indicating the current state of a T1 line as
specified by ANSI-T1-403.
protocol
PSTN
A set of rules that determines the behavior of devices in achieving and maintaining
communication.
Public Switched Telephone Network. A network shared among many users who can use
telephones to establish connections between two points. Also known as dial network.
pulse density
QRSS
A measure of the number of ones (marks, pulses) in relation to the total number of bits
transmitted.
Quasi-Random Signal Source. A test pattern simulating a random pattern of digital ones
and zeros used to simulate normal transmission.
RAM
Random-Access Memory. Read/write memory that is volatile and loses its contents when
power is removed.
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Glossary
register
reset
A part of the device’s memory that holds stored values.
An initialization of the device that occurs at power-up or in response to a reset command.
RFC
Request for Comments. One of the documents published by the Internet Engineering Task
Force that describe Internet protocols and policies.
RIP
Routing Information Protocol. A protocol for exchanging routing information.
An 8-position modular connector.
RJ48C
RLB
Repeater LoopBack. Loops the signal being sent to the network back to the DTE
Drop/Insert and data ports after it has passed through the framing circuitry of the device.
router
A device that connects LANs by dynamically routing data according to destination and
available routes.
RS-232
An Electronic Industries Association’s standard for a low-speed, 25-position, DCE/DTE
interface.
RS-232-like MIB
RFC 1659, which defines objects for managing RS-232-type interfaces (e.g., RS-422,
RS-423, etc.) and supports synchronous data ports and management communication
ports on the device.
RTS
Request to Send. A signal from the DTE to the device, indicating that the DTE has data to
send. V.24 circuit 105.
RX
Receive. To obtain transmitted signals.
Receive Clock. V.24 circuit 115.
RXC
RXD
Received Data. Pin 3 of the EIA-232 interface that is used by the DTE to receive data from
the modem. Conversely, the modem uses Pin 3 to transmit data to the DTE.
SDCP
Shared Diagnostic Control Panel. A feature that allows carrier-mounted devices to share
the same diagnostic control panel.
self-test
A test that checks most hardware components when power is applied to the device or a
reset is initiated.
server
SES
A device that offers a specific service, such as database management, to a client.
Severely Errored Seconds. Usually defined as a second during which a specific number of
CRC errors was exceeded, or an OOF or other critical error occurred.
Set (SNMP)
SLIP
A command providing write access to SNMP MIB objects.
Serial Line Internet Protocol. Protocol for serial operation on an internet.
Simple Network Management Protocol. Protocol for open networking management.
Status Event Register. Records the occurrence of certain alarm conditions.
SNMP
StEvent
subnet
A portion of a network, which may be a physically independent network segment, that
shares a network address with other portions of the network and is distinguished by a
subnet number. A subnet is to a network what a network is to an internet.
subnet mask
TCP/IP
A number that identifies the subnet portion of a network address. The subnet mask is a
32-bit Internet address written in dotted-decimal notation with all the 1s in the network and
subnet portions of the address.
Transmission Control Protocol/Internet Protocol. The dominant protocol suite in the
worldwide Internet, TCP allows a process on one machine to send data to a process on
another machine using the IP. TCP can be used as a full-duplex or one-way simplex
connection.
3162-A2-GB20-40
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Glossary
Telnet
Virtual terminal protocol in the Internet suite of protocols. Allows the user of one host
computer to log into a remote host computer and interact as a normal terminal user of the
remote host.
trap (SNMP)
T1
A notification message to the SNMP manager when an unusual event occurs on a network
device, such as a reinitialization.
A term for a digital carrier facility used to transmit a DS1 formatted digital signal at
1.544 Mbps. It is used primarily in North America.
TX
Transmit. To send signals from a device.
TXD
Transmit Data. Pin 2 of the EIA-232 interface that is used by the DTE to transmit data to
the modem. Conversely, the modem uses Pin 2 to receive data from the DTE.
UAS
UDP
Unavailable Seconds. A count of one-second intervals when service is unavailable.
User Datagram Protocol. A TCP/IP protocol describing how messages reach application
programs within a destination computer.
UL
Underwriter’s Laboratories, Inc. An organization which promotes product safety.
An ITU-T standard for a low-speed, 25-position, DCE/DTE interface.
An ITU-T standard for a high-speed, 34-position, DCE/DTE interface.
An ITU-T standard for local and remote diagnostic loopback tests.
An ITU-T standard for a data channel loopback (DCLB).
An ITU-T standard for a data terminal loopback (DTLB).
Volts alternating current.
V.24
V.35
V.54
V.54 Loop 2
V.54 Loop 3
Vac
Vdc
Volts direct current.
VF
Voice Frequency. The part of the audio frequency range used to transmit voice sound
(usually 300 Hz to 3400 Hz). This band is used by the modem for its modulated signal.
WAN
Wide Area Network. A network that spans a large geographic area.
An SNMP trap that indicates that the device has reinitialized itself.
External Transmit Clock. V.24 circuit 113.
warmStart trap
XTXC
Yellow Alarm
An outgoing signal transmitted when a DS1 terminal has determined that it has lost the
incoming signal.
August 2000
3162-A2-GB20-40
GL-8
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Index
Numbers
B
10BaseT port, 1-2, 1-4
configuring, 4-3
B8ZS (Bipolar Eight Zero Substitution) coding
configuration option, C-2, C-4
Self-Test Health message, 5-2
backup capability, 4-21
connection example, 2-4
connector pin assignments, D-4
IP address, C-23
BES (Bursty Errored Seconds) report, 5-6
BPV (Bipolar Violation) condition
front panel LED indication, 3-3
Performance Report message, 5-7
troubleshooting, 5-16
protocol, C-23
statistics, 5-8
status, 5-8
A
abort
C
lamp test, 5-28
cables, Ethernet, D-4
cabling
loopback, 5-25
test patterns, 5-28
examples, 2-5
AC power module, 1-4, B-1
Active configuration area, 3-12
addressing, IP network, F-1
agent, SNMP, 1-2
pin assignments, D-1– D-14
channel allocation
configuration options, C-11
procedure for configuring, 4-8
CLOCK IN interface
AIS (Alarm Indication Signal) condition
ASCII terminal/printer message, 5-12
Device Health and Status message, 5-3
front panel LED indication, 3-2, 3-3
troubleshooting, 5-16
functional description, 1-4, 4-20
physical description, 1-3
pin assignments, D-14
clocking
alarm messages. See messages, alarm
allocation, DS0 channel. See channel allocation
AMI (Alternate Mark Inversion), C-4
applications, 2-1
configuration options, C-16
principles of operation, 4-20
technical specifications, B-2
coding, line, C-4
ASCII terminal/printer
COM Port
cabling example, 2-5
cabling example, 2-5
used for alarm messages, 1-2
async terminal interface
configuration option, C-17
functional description, 1-4
physical description, 1-3
pin assignments, D-5
used with ASCII terminal/printer, 2-5, 5-12
used with SNMP system, 1-2, 2-3, 4-5
community name, C-28
ending a session, 3-5
functional description, 1-2, 3-8
initiating a session, 3-5
menu organization, 3-7
recovering operation of, 3-6
Telnet access, 1-2
authenticationFailure trap, 5-13
3162-A2-GB20-40
August 2000
IN-1
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Index
configuration options
procedure for changing, 3-12
tables
E
EER (Excessive Error Rate) condition
ASCII terminal/printer message, 5-12
Device Health and Status message, 5-3
front panel LED indication, 3-2, 3-3
Performance Report message, 5-7
troubleshooting, 5-16
Alarm, C-24
Cross Connect, C-11
DTE Interface, C-4
General, C-15
Management and Communication, C-26
Network Interface, C-2
Port, C-6
EIA–530–A interface, D-8
Embedded Data Link (EDL)
configuration option, C-7
used with SNMP system, 1-2, 2-3, 2-4, F-1
enterprise-specific trap, 5-13
environmental specifications, B-2
equalization, line, C-4
User Interface, C-17
worksheets, C-33
connectors
10BaseT port, D-4
rear panel
error messages. See messages, alarm
ES (Errored Seconds) report, 5-6
Ethernet port, 1-2, 1-4
cabling examples, 2-5
functional description, 1-4
physical description, 1-3
pin assignments, D-1– D-14
CPU failure message, 5-2
crossover cable, D-7
CSS (Controlled Slip Seconds) report, 5-7
Customer 1 configuration area, 3-12
Customer 2 configuration area, 3-12
configuring, 4-3
connector, D-4
IP address, C-23
protocol, C-23
statistics, 5-8
status, 5-8
external modem interface, D-7
D
F
data channel loopback (DCLB), 5-24, C-9
data port. See PORT (1–2) interface
data terminal loopback (DTLB), 5-25, C-9
database, SNMP, 1-2
Facility Data Link (FDL)
configuration option, C-2
used with SNMP system, 1-2, 2-3, 2-4, F-2
Factory 1 configuration area, 3-12
Factory 2 configuration area, 3-12
failure analysis. See troubleshooting
failure message, troubleshooting, 5-16
features, 1-1– 1-4
Device Fail message, 5-3
dimensions, B-2
DS0 channel allocation. See channel allocation
DTE Drop/Insert interface
channel allocation procedure, 4-8
configuration options, C-4
fractional T1, 2-1, 2-2
framing configuration option, C-2, C-4
front panel
failure message, 5-2
front panel LED indications, 3-3
functional description, 1-2, 1-4, 2-1
managed by SNMP, E-1
operation, 3-1
physical description, 1-3, 3-1
physical description, 1-3
I
pin assignments, D-3
technical specifications, B-1
troubleshooting, 5-15
indicators. See LEDs, front panel
IP (Internet Protocol) addressing
configuration option, C-26, C-27
for 10BaseT port, C-23
DTE loopback (DLB), 5-22
configuration option, C-4
external control interface, D-3
example of use, F-1
procedure for configuring, 4-5
IP Routing Table, 5-10
August 2000
3162-A2-GB20-40
IN-2
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Index
messages
alarm
L
lamp test, 5-28
Device Health and Status, 5-3
LAN Adapter, 2-4
Performance Report, 5-6
Self-Test Results, 5-2
LAN cable, D-4
LEDs, front panel
troubleshooting, 5-15
during power-up self-test, 2-6
functional description, 3-1
lamp test, 5-28
with ASCII terminal/printer, 1-2, 5-12
status
Device Health and Status, 5-3
Performance Report, 5-6
Self-Test Results, 5-2
physical description, 1-3
line coding, C-4
line equalization, C-4
Test Status, 5-29
line loopback (LLB), 5-21
link layer protocol, 4-4, 4-7
link trap, 5-13
MIBs, SNMP. See SNMP, MIBs
N
LOF (Loss Of Frame) condition, 3-2, 3-3
LOFC (Loss Of Frame Count) report, 5-7
loopback
network interface
cabling example, 2-5
front panel LED indication, 3-2
local, 5-20
channel allocation procedure, 4-8
configuration options, C-2
failure message, 5-2
abort, 5-25
data channel loopback (DCLB), 5-24
data terminal loopback (DTLB), 5-25
DTE loopback (DLB), 5-22, C-4, D-3
line loopback (LLB), 5-21
payload loopback (PLB), 5-22
repeater loopback (RLB), 5-23
remote, 5-19
front panel LED indications, 3-2
functional description, 1-4, 2-1
physical description, 1-3
pin assignments, D-1
technical specifications, B-1
troubleshooting, 5-15
LOS (Loss Of Signal) condition
ASCII terminal/printer message, 5-12
Device Health and Status message, 5-3
front panel LED indication, 3-2, 3-3
Performance Report message, 5-7
Self-Test Health message, 5-2
troubleshooting, 5-15
O
objects, SNMP, 1-2, E-1– E-24
OOF (Out Of Frame) condition
ASCII terminal/printer message, 5-12
Device Health and Status message, 5-4
front panel LED indication, 3-2, 3-3
Performance Report message, 5-6
troubleshooting, 5-15
M
options, strap. See configuration options
maintenance
device health and status, 5-3
performance reporting, 5-5
power-up self-test, 2-6, 5-1
manager, SNMP, 1-2
menu tree, 3-7
P
pattern tests, 5-26
payload loopback (PLB), 5-22
PBX applications, 2-2
PDV (Pulse Density Violation) condition, 3-3
performance reporting, 5-5, C-9
physical description of DSU/CSU, 1-3, B-2
pin assignments, D-1– D-14
3162-A2-GB20-40
August 2000
IN-3
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Index
Point-to-Point Protocol (PPP)
procedure for configuring, 4-7
used with SNMP system, 1-2, 2-3, 2-4, 4-5, F-1
PORT (1–2) interface
S
self-test
displaying results, 5-1
front panel indications, 2-6, 3-2
troubleshooting, 5-15
configuration options, C-6
failure message, 5-2
Send Ones configuration option, C-4, C-8
serial crossover cable, D-7
Serial Line Internet Protocol (SLIP)
procedure for configuring, 4-7
used with SNMP system, 1-2, 2-3, 4-5, F-1
SES (Severely Errored Seconds) report, 5-6
SNMP (Simple Network Management Protocol)
agent, 1-2
front panel LED indications, 3-4
functional description, 1-4, 2-1
managed by SNMP, E-1
physical description, 1-3
pin assignments, D-8
technical specifications, B-2
Port Use, 10BaseT, 4-3
power input
configuration options
cabling example, 2-5
examples of use, 4-4
connector, 1-3, 1-4
option table, C-26
consumption, B-1
option worksheet, C-42
requirement, B-1
connection examples, 2-3, 2-5, F-1
database, 1-2
troubleshooting, 5-15
power module, 1-4, B-1
power-up self-test
IP addressing, F-1
manager, 1-2
displaying results, 5-1
MIBs
front panel indications, 2-6, 3-2
troubleshooting, 5-15
functional description, E-1
list of objects, E-1– E-24
objects, 1-2
problem determination. See troubleshooting
protocol, link layer, 4-4, 4-7
principles of operation, 1-2
traps, functional description, 1-2, 5-13
specifications, environmental, B-1, B-2
statistics
Q
QRSS Test, 5-26
Ethernet, 5-8
performance, 5-5
R
rate
Status branch
Ethernet statistics, 5-8
communications port, C-18
external clock, C-16
IP Routing Table, 5-10
status messages. See messages, status
straps. See configuration options
subnet, 4-4, C-26, C-27, F-2
subnet mask, 10BaseT port, C-23
synchronous data port. See PORT (1–2) interface
synchronous data port, C-13
rear panel
connectors. See connectors, rear panel
physical description, 1-3
recover, asynchronous terminal operation, 3-6
remote loopback, 5-19
repeater loopback (RLB), 5-23
reset
asynchronous terminal operation, 3-6
front panel indications, 2-6
router applications, 2-1, 2-2
RS-449 interface, D-10
August 2000
3162-A2-GB20-40
IN-4
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Index
T
U
technical specifications, B-1
Telnet access
UAS (Unavailable Seconds) report, 5-6
configuration options
V
examples of use, 4-4
option table, C-26
V.35 interface, D-12
V.54 Loop 2. See data channel loopback (DCLB)
V.54 Loop 3. See data terminal loopback (DTLB)
option worksheet, C-41
connection examples, 2-3
functional description, 1-2
terminal interface, 3-5
test commands, 5-18
front panel LED indications, 3-2
lamp test, 5-28
W
warmStart trap, 5-13
weight, B-2
worksheets, configuration option, C-33
local loopback, 5-20
abort, 5-25
X
data channel loopback (DCLB), 5-24
data terminal loopback (DTLB), 5-25
DTE loopback (DLB), 5-22
line loopback (LLB), 5-21
payload loopback (PLB), 5-22
repeater loopback (RLB), 5-23
remote loopback, 5-19
test messages, 5-29
X.21 interface, D-13
Y
Yellow Alarm condition
ASCII terminal/printer message, 5-12
Device Health and Status message, 5-4
front panel LED indication, 3-2, 3-3
Performance Report message, 5-7
troubleshooting, 5-16
test patterns, 5-26
test jacks
functional description, 5-17
physical description, 1-3
timing. See clocking
traps, SNMP. See SNMP, traps
troubleshooting
device health, 5-3
diagnostic table, 5-15
performance, 5-5
power-up self-test, 2-6, 5-1
3162-A2-GB20-40
August 2000
IN-5
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