ADTRAN Switch 1200287L1 User Manual

MX2800 STS-1  
User Manual  
4200659L1 AC Non-Redundant Version with Modem  
4200659L2 AC Redundant Version with Modem  
4200659L3 DC Non-Redundant Version with Modem  
4200659L4 DC Redundant Version with Modem  
4200659L5 AC Non-Redundant Version  
4200659L6 AC Redundant Version  
4200659L7 DC Non-Redundant Version  
4200659L8 DC Redundant Version  
1200291L1 Breakout Panel  
4175043L2 Battery Backup  
1200657L2 Battery Backup Adapter Cable  
1200287L1 Amp to Punch-Down Cable  
61200659L1-1A  
January 2001  
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FCC regulations require that the following information be provided in this manual:  
1. This equipment complies with Part 68 of FCC rules. On the bottom of the equip-  
ment housing is a label showing the FCC registration number and ringer equiva-  
lence number (REN). If requested, provide this information to the telephone  
company.  
2. If this equipment causes harm to the telephone network, the telephone company  
may temporarily discontinue service. If possible, advance notification is given;  
otherwise, notification is given as soon as possible. The telephone company will  
advise the customer of the right to file a complaint with the FCC.  
3. The telephone company may make changes in its facilities, equipment, operations,  
or procedures that could affect the proper operation of this equipment. Advance  
notification and the opportunity to maintain uninterrupted service are given.  
4. If experiencing difficulty with this equipment, please contact ADTRAN for repair  
and warranty information. The telephone company may require this equipment to  
be disconnected from the network until the problem is corrected or it is certain the  
equipment is not malfunctioning.  
5. This unit contains no user-serviceable parts.  
6. An FCC compliant telephone cord with a modular plug is provided with this  
equipment. This equipment is designed to be connected to the telephone network  
or premises wiring using an FCC compatible modular jack, which is Part 68 com-  
pliant.  
7. The following information may be required when applying to the local telephone  
company for a dial-up line for the V.34 modem:  
Service Type  
REN  
FIC  
USOC  
Loop Start  
1.6B/0.8A  
02LS2  
RJ-11C  
8. The REN is useful in determining the quantity of devices you may connect to your  
telephone line and still have all of those devices ring when your number is called.  
In most areas, the sum of the RENs of all devices should not exceed five. To be  
certain of the number of devices you may connect to your line as determined by  
the REN, call your telephone company to determine the maximum REN for your  
calling area.  
9. This equipment may not be used on coin service provided by the telephone com-  
pany. Connection to party lines is subject to state tariffs. Contact your state pub-  
lic utility commission or corporation commission for information.  
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Federal Communications Commission  
Radio Frequency Interference Statement  
This equipment has been tested and found to comply with the limits for a Class A dig-  
ital 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 fre-  
quency energy and, if not installed and used in accordance with the instruction man-  
ual, may cause harmful interference to radio frequencies. 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  
.
Shielded cables must be used with this unit to ensure compliance with  
Class A FCC limits.  
Changes or modifications to this unit not expressly approved by  
the party responsible for compliance could void the user's  
authority to operate the equipment.  
Canadian Emissions Requirements  
This digital apparatus does not exceed the Class A limits for radio noise emissions  
from digital apparatus as set out in the interference-causing equipment standard enti-  
tled “Digital Apparatus,” ICES-003 of the Department of Communications.  
Cet appareil nuerique respecte les limites de bruits radioelectriques applicables aux  
appareils numeriques de Class A prescrites dans la norme sur le materiel brouilleur:  
“Appareils Numeriques,” NMB-003 edictee par le ministre des Communications.  
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Canadian Equipment Limitations  
Notice: The Canadian Industry and Science Canada label identifies certified equip-  
ment. This certification means that the equipment meets certain telecommunications  
network protective, operational, and safety requirements. 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 con-  
nected to the facilities of the local telecommunications company. The equipment must  
also be installed using an acceptable method of connection. In some cases, the com-  
pany’s inside wiring associated with a single line individual service may be extended  
by means of a certified connector assembly (telephone extension cord). The customer  
should be aware that compliance with the above limitations may not prevent degrada-  
tion of service in some situations.  
Repairs to certified equipment should be made by an authorized Canadian mainte-  
nance facility designated by the supplier. Any repairs or alterations made by the user  
to this equipment, or equipment malfunctions, may give the telecommunications com-  
pany 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.  
Users should not attempt to make such connections themselves, but  
should contract the appropriate electric inspection authority, or an  
electrician, as appropriate.  
The Load Number (LN) assigned to each terminal device denotes the percentage of  
the total load to be connected to a telephone loop which is used by the device, to pre-  
vent overloading. The termination on a loop may consist of any combination of  
devices subject only to the requirement that the total of the Load Numbers of all  
devices does not exceed 100.  
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Important Safety Instructions  
Save These Instructions  
When using your telephone equipment, please follow these basic safety precautions to  
reduce the risk of fire, electrical shock, or personal injury:  
1. Do not use this product near water, such as near a bathtub, wash bowl, kitchen  
sink, laundry tub, in a wet basement, or near a swimming pool.  
2. Avoid using a telephone (other than a cordless-type) during an electrical storm.  
There is a remote risk of shock from lightning.  
3. Do not use the telephone to report a gas leak in the vicinity of the leak.  
4. Use only the power cord, power supply, and/or batteries indicated in the manual.  
Do not dispose of batteries in a fire. They may explode. Check with local codes  
for special disposal instructions.  
Warranty and Customer Service  
ADTRAN will replace or repair this product within ten years from the date of ship-  
ment if it does not meet its published specifications or fails while in service. For  
detailed warranty, repair, and return information refer to the ADTRAN Equipment  
Warranty and Repair and Return Policy Procedure.  
Return Material Authorization (RMA) is required prior to returning equipment to  
ADTRAN.  
For service, RMA requests, or further information, contact one of the numbers listed  
at the end of this manual.  
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LIMITED PRODUCT WARRANTY  
ADTRAN warrants that for ten (10) years from the date of shipment to Customer, all  
products manufactured by ADTRAN will be free from defects in materials and work-  
manship. ADTRAN also warrants that products will conform to the applicable speci-  
fications and drawings for such products, as contained in the Product Manual or in  
ADTRAN's internal specifications and drawings for such products (which may or may  
not be reflected in the Product Manual). This warranty only applies if Customer gives  
ADTRAN written notice of defects during the warranty period. Upon such notice,  
ADTRAN will, at its option, either repair or replace the defective item. If ADTRAN  
is unable, in a reasonable time, to repair or replace any equipment to a condition as  
warranted, Customer is entitled to a full refund of the purchase price upon return of  
the equipment to ADTRAN. This warranty applies only to the original purchaser and  
is not transferable without ADTRAN's express written permission. This warranty  
becomes null and void if Customer modifies or alters the equipment in any way, other  
than as specifically authorized by ADTRAN.  
EXCEPT FOR THE LIMITED WARRANTY DESCRIBED ABOVE, THE FORE-  
GOING CONSTITUTES THE SOLE AND EXCLUSIVE REMEDY OF THE CUS-  
TOMER AND THE EXCLUSIVE LIABILITY OF ADTRAN AND IS IN LIEU OF  
ANY AND ALL OTHER WARRANTIES (EXPRESSED OR IMPLIED). ADTRAN  
SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, INCLUDING (WITH-  
OUT LIMITATION), ALL WARRANTIES OF MERCHANTABILITY AND FIT-  
NESS FOR A PARTICULAR PURPOSE. SOME STATES DO NOT ALLOW THE  
EXCLUSION OF IMPLIED WARRANTIES, SO THIS EXCLUSION MAY NOT  
APPLY TO CUSTOMER.  
In no event will ADTRAN or its suppliers be liable to Customer for any incidental,  
special, punitive, exemplary or consequential damages experienced by either  
Customer or a third party (including, but not limited to, loss of data or information,  
loss of profits, or loss of use). ADTRAN is not liable for damages for any cause  
whatsoever (whether based in contract, tort, or otherwise) in excess of the amount  
paid for the item. Some states do not allow the limitation or exclusion of liability for  
incidental or consequential damages, so the above limitation or exclusion may not  
apply to Customer.  
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Customer Service, Product Support Information, and Training  
ADTRAN will replace or repair this product within five years from the date of ship-  
ment if the product does not meet its published specification, or if it fails while in ser-  
vice.  
A return material authorization (RMA) is required prior to returning equipment to  
ADTRAN. For service, RMA requests, training, or more information, see the toll-free  
contact numbers given below.  
Presales Inquiries and Applications Support  
Please contact your local distributor, ADTRAN Applications Engineering, or  
ADTRAN Sales:  
Applications  
Engineering  
(800) 615-1176  
(800) 827-0807  
Sales  
Post-Sale Support  
Please contact your local distributor first. If your local distributor cannot help, please  
contact ADTRAN Technical Support and have the unit serial number available.  
Technical Support  
(888) 4ADTRAN  
The Custom Extended Services (ACES) program offers multiple types and levels of  
service plans which allow you to choose the kind of assistance you need. For questions,  
call the ACES Help Desk.  
ACES Help Desk  
(888) 874-2237  
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61200659L1-1  
       
Repair and Return  
If ADTRAN Technical Support determines that a repair is needed, Technical Support  
will coordinate with the Custom and Product Service (CAPS) department to issue an  
RMA number. For information regarding equipment currently in house or possible  
fees associated with repair, contact CAPS directly at the following number:Identify the  
CAPS Department  
(256) 963-8722  
RMA number clearly on the package (below address), and return to the following ad-  
dress:  
ADTRAN Customer and Product Service  
6767 Old Madison Pike  
Building #6 Suite 690  
Huntsville, Alabama 35807  
RMA # _____________  
Training  
The Enterprise Network (EN) Technical Training offers training on our most popular  
products. These courses include overviews on product features and functions while cov-  
ering applications of ADTRAN's product lines. ADTRAN provides a variety of training  
options, including customized training and courses taught at our facilities or at your site.  
For more information about training, please contact your Territory Manager or the Enter-  
prise Training Coordinator.  
Training - phone  
Training - fax  
(800) 615-1176, ext. 7500  
(256) 963 7941  
Training - email  
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List of Figures ........................................................................................................................ xix  
List of Tables ......................................................................................................................... xxi  
Chapter 1. Introduction  
Product Overview .................................................................................................................. 1-1  
Controller Card 1:1 Redundancy ..................................................................................... 1-2  
STS-1 Overview ..................................................................................................................... 1-3  
STS-1 Framing................................................................................................................. 1-3  
STS-1 Pointers ................................................................................................................. 1-3  
Transport Overhead (TOH) ............................................................................................. 1-4  
STS-1 Synchronous Payload Envelope (SPE)................................................................. 1-4  
Virtual Tributaries (VT)................................................................................................... 1-4  
Unit Timing...................................................................................................................... 1-5  
SNMP ..................................................................................................................................... 1-5  
Network Manager ........................................................................................................... 1-6  
Agent ............................................................................................................................... 1-6  
MIB ................................................................................................................................. 1-6  
Telnet ..................................................................................................................................... 1-6  
TL1 ......................................................................................................................................... 1-7  
Available Options .................................................................................................................. 1-8  
Breakout Panel (P/N 1200291L1).................................................................................... 1-8  
Battery Backup (P/N 4175043L2) ................................................................................... 1-8  
Chapter 2. Installation and Operation  
Unpack, Inspect, Power Up .................................................................................................... 2-1  
Receiving Inspection........................................................................................................ 2-1  
ADTRAN Shipments Include.......................................................................................... 2-1  
Power Up ......................................................................................................................... 2-2  
Rackmount Installation .......................................................................................................... 2-5  
Connecting the Breakout Panel........................................................................................ 2-6  
Rear Panel .............................................................................................................................. 2-7  
LAN Port.......................................................................................................................... 2-8  
Modem Port ..................................................................................................................... 2-8  
Noncritical and Critical Alarm Connectors ..................................................................... 2-8  
Network Interfaces........................................................................................................... 2-9  
DSX-1/E1 Interfaces........................................................................................................ 2-9  
Power Connection............................................................................................................ 2-9  
Front Panel ........................................................................................................................... 2-10  
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Table of Contents  
Craft Port........................................................................................................................2-10  
Establishing Terminal Connection .........................................................................2-10  
Navigating Within the Menus ................................................................................2-11  
Status ..............................................................................................................2-12  
Statistics ..........................................................................................................2-12  
Configuration ..................................................................................................2-12  
Diagnostics .....................................................................................................2-12  
Logout .............................................................................................................2-12  
ACO Buttons..................................................................................................................2-12  
LED Descriptions...........................................................................................................2-13  
Power Supply A/B .................................................................................................2-13  
Status LEDs ...........................................................................................................2-13  
T1/E1 Status LEDs ................................................................................................2-15  
Chapter 3. Configuration  
Network Interface ................................................................................................................... 3-3  
STS-1 Configuration........................................................................................................ 3-3  
Line Length .............................................................................................................. 3-3  
Timing ...................................................................................................................... 3-3  
XCV Threshold ........................................................................................................ 3-4  
VT Mode ..................................................................................................................3-5  
Protection Configuration.................................................................................................. 3-5  
Active Controller ..................................................................................................... 3-5  
Network Protection .................................................................................................. 3-6  
Max. Switch Threshold ............................................................................................3-6  
Min. Switching Period ............................................................................................. 3-6  
Miscellaneous................................................................................................................... 3-6  
Loopback Timeout ................................................................................................... 3-6  
External Clock Configuration .................................................................................. 3-7  
VT Interface ........................................................................................................................... 3-7  
VT Interface #1-28........................................................................................................... 3-8  
VT/Port Mapping ..................................................................................................... 3-8  
T1 State .................................................................................................................... 3-8  
T1 Line Length ........................................................................................................ 3-9  
T1 Remote Loopback ............................................................................................... 3-9  
T1 Circuit Protection ............................................................................................... 3-9  
Hairpin Loopback .................................................................................................... 3-9  
Line ID ..................................................................................................................... 3-9  
Set Multiple...................................................................................................................... 3-9  
Set Cross-Connect Mapping ..........................................................................................3-10  
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Restore Defaults ..................................................................................................... 3-11  
Restore VT Mapping Defaults....................................................................................... 3-11  
Protection Threshold (1-28)........................................................................................... 3-11  
XCV Threshold.............................................................................................................. 3-12  
System Management ............................................................................................................ 3-13  
Management Options..................................................................................................... 3-14  
Local IP Address .................................................................................................... 3-14  
Gateway IP Address .............................................................................................. 3-14  
Subnet Mask .......................................................................................................... 3-14  
Management Port ................................................................................................... 3-14  
Dialup Options ....................................................................................................... 3-14  
Primary and Secondary Phone Numbers ........................................................ 3-15  
Initializing String ............................................................................................ 3-15  
Dial String ...................................................................................................... 3-15  
Maximum Redial Attempts ............................................................................ 3-15  
Idle Timeout ................................................................................................... 3-16  
Connection Timeout ....................................................................................... 3-16  
Pause Between Calls ....................................................................................... 3-16  
Dialout On Trap .............................................................................................. 3-16  
Answer on Ring .............................................................................................. 3-16  
Modem Mode ................................................................................................. 3-17  
Modem Baud Rate .......................................................................................... 3-17  
Hangup ........................................................................................................... 3-17  
Last Modem Response ................................................................................... 3-17  
Alarm Relays ................................................................................................................. 3-18  
Alarm Relay Configuration ................................................................................... 3-18  
STS-1 Alarms ................................................................................................. 3-19  
VT/Port Alarms .............................................................................................. 3-21  
System Alarms ................................................................................................ 3-23  
Power Supply Alarms ..................................................................................... 3-24  
SNMP Management Options......................................................................................... 3-25  
Trap IP Addresses .................................................................................................. 3-25  
Trap Generation ..................................................................................................... 3-25  
STS-1 Active Alarm Traps ............................................................................. 3-26  
STS-1 Standby Alarm Traps .......................................................................... 3-28  
VT/Port Traps ................................................................................................. 3-30  
System Traps .................................................................................................. 3-31  
Power Supply Alarm Traps ............................................................................ 3-33  
MIB II Standard Alarm Traps ........................................................................ 3-34  
Read Community Name ........................................................................................ 3-34  
Write Community Name ........................................................................................ 3-34  
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Table of Contents  
Trap Community Name .........................................................................................3-34  
System Security..............................................................................................................3-35  
Password ................................................................................................................3-35  
Terminal Timeout ..................................................................................................3-35  
IP Security ..............................................................................................................3-35  
IP Hosts ..................................................................................................................3-35  
Date & Time...................................................................................................................3-35  
Miscellaneous.................................................................................................................3-36  
Equipment Identification .......................................................................................3-36  
Unit ID ............................................................................................................3-36  
STS-1 J1 Path Trace .......................................................................................3-36  
Syslog Setup ..........................................................................................................3-36  
Transmission ...................................................................................................3-36  
Host IP Address ..............................................................................................3-36  
Severity Level .................................................................................................3-36  
Host Facility ...................................................................................................3-37  
TL1 Account Management ....................................................................................3-37  
Save on Logout ......................................................................................................3-38  
Craft baud rate .......................................................................................................3-38  
Utilities .................................................................................................................................3-38  
Load Default Settings.....................................................................................................3-40  
Update FLASH Software...............................................................................................3-40  
Update Via XMODEM ..........................................................................................3-40  
Update via TFTP Server ........................................................................................3-41  
Config Transfer..............................................................................................................3-41  
Saving to a TFTP Server ........................................................................................3-41  
Retrieving from a TFTP Server .............................................................................3-42  
System Reset..................................................................................................................3-43  
Save Configuration ...............................................................................................................3-43  
Chapter 4. Status  
STS-1 State ............................................................................................................................. 4-2  
Card A..............................................................................................................................4-2  
Card A/Card B Alarms..................................................................................................... 4-2  
Network Port Mapping..................................................................................................... 4-4  
Power Supply State ................................................................................................................ 4-5  
System State ........................................................................................................................... 4-5  
Alarm ............................................................................................................................... 4-5  
Card A/Card B ................................................................................................................. 4-6  
Protection ......................................................................................................................... 4-7  
Card Comm...................................................................................................................... 4-7  
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Timing Status ......................................................................................................................... 4-8  
Clock Status ..................................................................................................................... 4-8  
Current Source ................................................................................................................. 4-8  
PRI Ext. Clock ................................................................................................................. 4-9  
SEC Ext. Clock................................................................................................................ 4-9  
VT/Port State ........................................................................................................................ 4-10  
VT/Port State ................................................................................................................ 4-10  
Acknowledge Alarms (ACO) ............................................................................................... 4-12  
Chapter 5. Statistics  
STS-1 Statistics ...................................................................................................................... 5-2  
24 Hour Alarm History.................................................................................................... 5-2  
Performance Parameters .................................................................................................. 5-6  
Interval starting at: ................................................................................................... 5-7  
Severely Errored Framing Seconds (SEFS) ............................................................ 5-7  
Section Coding Violations (SCV) ........................................................................... 5-7  
Line Coding Violations (LCV) ................................................................................ 5-7  
Path Coding Violations (PCV) ................................................................................ 5-7  
Section Errored Seconds (SES) ............................................................................... 5-8  
Line Errored Seconds (LES) .................................................................................... 5-8  
Path Errored Seconds (PES) .................................................................................... 5-8  
Section Severely Errored Seconds (SSES) .............................................................. 5-8  
Line Severely Errored Seconds (LSES) .................................................................. 5-8  
Path Severely Errored Seconds (PSES) ................................................................... 5-8  
Line Unavailable Seconds (LUAS) ......................................................................... 5-9  
Path Unavailable Seconds (PUAS) .......................................................................... 5-9  
Clear All Local STS-1 Statistics .............................................................................. 5-9  
Local VT Statistics ................................................................................................................. 5-9  
Alarm History ................................................................................................................ 5-10  
Performance Parameters ................................................................................................ 5-12  
Local Port Statistics ............................................................................................................. 5-15  
Loss of Signal Alarms ................................................................................................... 5-15  
Bipolar Violation Counts .............................................................................................. 5-15  
AIS Loop Alarms .......................................................................................................... 5-15  
AIS Carrier Alarms ....................................................................................................... 5-16  
Far End STS-1 Statistics ...................................................................................................... 5-16  
Performance Parameters ................................................................................................ 5-16  
Interval starting at: ................................................................................................. 5-18  
Severely Errored Framing Seconds (SEFS) .......................................................... 5-18  
Section Coding Violations (SCV) ......................................................................... 5-18  
Line Coding Violations (LCV) .............................................................................. 5-18  
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Table of Contents  
Path Coding Violations (PCV) ..............................................................................5-18  
Section Errored Seconds (SES) .............................................................................5-19  
Line Errored Seconds (LES) ..................................................................................5-19  
Path Errored Seconds (PES) ..................................................................................5-19  
Section Severely Errored Seconds (SSES) ............................................................5-19  
Line Severely Errored Seconds (LSES) .................................................................5-19  
Path Severely Errored Seconds (PSES) .................................................................5-19  
Line Unavailable Seconds (LUAS) .......................................................................5-20  
Path Unavailable Seconds (PUAS) ........................................................................5-20  
Clear All Far End STS-1 Statistics ........................................................................5-20  
Chapter 6. Diagnostics  
VT/Port Loopbacks ................................................................................................................ 6-2  
Tributary........................................................................................................................... 6-2  
Analog Network............................................................................................................... 6-3  
Digital Line/Net ...............................................................................................................6-4  
Codec Line/Net ................................................................................................................ 6-4  
CSU Loopback................................................................................................................. 6-5  
CSU Loopback w/BERT.................................................................................................. 6-5  
VT BERT ......................................................................................................................... 6-6  
Line BERT ....................................................................................................................... 6-7  
STS-1 Loopbacks ................................................................................................................... 6-8  
Line Network ...................................................................................................................6-8  
Analog Loopback.............................................................................................................6-9  
Digital Loopback............................................................................................................6-10  
Metallic Diagnostics ......................................................................................................6-11  
Chapter 7. Circuit and Network Redundancy  
Non-Redundant Mode ............................................................................................................ 7-2  
Circuit Failure Recovery Mode .............................................................................................. 7-3  
Circuit and Network Failure Recovery Mode ........................................................................ 7-4  
Chapter 8. Power Loss Recovery  
Non-Redundant Power Mode .................................................................................................8-2  
Power Supply Recovery Mode ............................................................................................... 8-3  
Power Supply and Source Recovery Mode ............................................................................ 8-4  
Battery Backup Mode ............................................................................................................. 8-5  
Chapter 9. Transaction Language 1 (TL1)  
Introduction ............................................................................................................................ 9-1  
Overview ................................................................................................................................ 9-1  
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TL1 Messages ........................................................................................................................ 9-2  
TL1 Responses................................................................................................................. 9-2  
Acknowledgment Messages .................................................................................... 9-2  
In Progress ........................................................................................................ 9-3  
All Right ........................................................................................................... 9-3  
Output Response Messages ..................................................................................... 9-3  
Autonomous Messages ............................................................................................ 9-4  
TL1 Commands ...................................................................................................................... 9-5  
TL1 Autonomous Messages ................................................................................................. 9-10  
TL1 Error Codes .................................................................................................................. 9-13  
Appendix A. Pinouts .......................................................................................................... A-1  
Appendix B. Specifications Summary............................................................................... B-1  
Appendix C. Acronyms/Abbreviations ............................................................................ C-1  
Appendix D. Glossary........................................................................................................ D-1  
Index .............................................................................................................................. Index-1  
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Table of Contents  
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Figure 2-1. DC Power Connector......................................................................................... 2-3  
Figure 2-2. The Breakout Panel ........................................................................................... 2-6  
Figure 2-3. MX2800 STS-1 Rear View ............................................................................... 2-7  
Figure 2-4. MX2800 STS-1 Front Panel............................................................................ 2-10  
Figure 2-5. Terminal Main Menu....................................................................................... 2-11  
Figure 3-1. Configuration Menu .......................................................................................... 3-1  
Figure 3-2. Configuration Menu Tree .................................................................................. 3-2  
Figure 3-3. Network Configuration Menu ........................................................................... 3-3  
Figure 3-4. VT Interface Menu ............................................................................................ 3-7  
Figure 3-5. Configure VT Interface #1 Menu...................................................................... 3-8  
Figure 3-6. Set Multiple Menu........................................................................................... 3-10  
Figure 3-7. Set Cross-Connect Mapping Menu ................................................................. 3-11  
Figure 3-8. XCV Threshold Menu..................................................................................... 3-12  
Figure 3-9. System Management Configuration Menu...................................................... 3-13  
Figure 3-10. Dialup Options Menu ...................................................................................... 3-15  
Figure 3-11. Alarm Relay Configuration Menu.................................................................. 3-18  
Figure 3-12. Trap Generation Menu..................................................................................... 3-25  
Figure 3-13. System Utilities Menu..................................................................................... 3-39  
Figure 4-1. Status Menu....................................................................................................... 4-1  
Figure 5-1. Statistics Menu .................................................................................................. 5-1  
Figure 5-2. Local STS-1 Statistics Menu............................................................................. 5-2  
Figure 5-3. Local STS-1 Current Alarm Count Screen........................................................ 5-4  
Figure 5-4. Local STS-1 24-Hour Alarm History Screen .................................................... 5-5  
Figure 5-5. Local STS-1 Performance Parameters (Current 15 Minutes)............................ 5-6  
Figure 5-6. Local STS-1 Performance Parameters (24 Hour History)................................. 5-6  
Figure 5-7. Local STS-1 Performance Parameters (24 Hour Totals)................................... 5-7  
Figure 5-8. Local VT Statistics ............................................................................................ 5-9  
Figure 5-9. Local VT-LOP Alarm Count Screen (Current 15 Minutes)............................ 5-12  
Figure 5-10. Local VT-LOP Alarm Count Screen (24 Hour History)................................. 5-12  
Figure 5-11. Local VT-CV Performance Parameters (Current 15 Minutes)........................ 5-14  
Figure 5-12. Local VT-CV Performance Parameters (24 Hour History)............................. 5-14  
Figure 5-13. Local Port Statistics Menu............................................................................... 5-15  
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List of Figures  
Figure 5-14. Far End STS-1 Statistics Menu .......................................................................5-16  
Figure 5-15. Far End STS-1 Performance Parameters (Current 15 Minutes)......................5-17  
Figure 5-16. Far End STS-1 Performance Parameters (24 Hour History) ...........................5-17  
Figure 5-17. Far End STS-1 Performance Parameters (24 Hour Totals) .............................5-18  
Figure 6-1. Diagnostics Menu.............................................................................................. 6-1  
Figure 6-2. VT/Port Diagnostics Menu................................................................................ 6-2  
Figure 6-3. Tributary Loopback Test.................................................................................... 6-3  
Figure 6-4. Analog Network Loopback................................................................................ 6-3  
Figure 6-5. Digital Line/Network Loopback........................................................................ 6-4  
Figure 6-6. Codec Loopback................................................................................................ 6-4  
Figure 6-7. Diagnostics Menu with BERT Selected ............................................................ 6-6  
Figure 6-8. VT Bert Test ...................................................................................................... 6-7  
Figure 6-9. Line Bert Test .................................................................................................... 6-7  
Figure 6-10. STS-1 Diagnostics Menu................................................................................... 6-8  
Figure 6-11. Line Network Test ............................................................................................. 6-9  
Figure 6-12. Analog Loopback............................................................................................... 6-9  
Figure 6-13. Digital Loopback .............................................................................................6-10  
Figure 6-14. Metallic Diagnostics Loopback Test ............................................................... 6-11  
Figure 7-1. Non-Redundant Mode ....................................................................................... 7-2  
Figure 7-2. Circuit Failure Recovery Mode ......................................................................... 7-3  
Figure 7-3. Circuit and Network Failure Recovery Mode ................................................... 7-5  
Figure 8-1. Non-Redundant Power Mode ............................................................................ 8-2  
Figure 8-2. Power Supply Failure Recovery Mode.............................................................. 8-3  
Figure 8-3. Power Supply and Source Failure Recovery Mode........................................... 8-4  
Figure 8-4. Battery Backup System......................................................................................8-5  
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Table 2-1. DC Connector Symbol Definitions ................................................................... 2-3  
Table 2-2. LED Conditions for Active Cards .................................................................. 2-14  
Table 2-3. LED Conditions for Standby Cards................................................................. 2-15  
Table 2-4. T1/E1 LED Conditions ................................................................................... 2-16  
Table 3-1. Syslog Severity Levels .................................................................................. 3-37  
Table 7-1. Configuration Requirements for Circuit Recovery ........................................... 7-4  
Table 9-1. TL1 Commands ................................................................................................ 9-6  
Table 9-2. MX2800 STS-1 Alarm Events ....................................................................... 9-10  
Table 9-3. MX2800 STS-1 Informational Events ............................................................ 9-12  
Table 9-4. TL1 Error Codes.............................................................................................. 9-13  
Table A-1. Craft Port Pin Assignments .............................................................................. A-1  
Table A-2. LAN Port Pin Assignments ............................................................................. A-2  
Table A-3. Modem Port Pin Assignments.......................................................................... A-2  
Table A-4. Amp Pin Assignments...................................................................................... A-3  
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List of Tables  
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Chapter 1  
Introduction  
PRODUCT OVERVIEW  
The MX2800 STS-1 is a SONET multiplexer that consolidates T1  
and E1 signals into an STS-1 signal. This unit provides a cost-  
effective, versatile tool for combining independent T1s or E1s over  
the same STS-1 carrier.  
Embedded SNMP (simple network management protocol) and  
Telnet are available through the modem port using SLIP/PPP or  
through the 10BaseT ethernet port. Using the Management  
Information Base II (MIB II), RFC 1595 standards, and an  
ADTRAN enterprise MIB, the MX2800 STS-1 can be configured,  
monitored, and diagnosed with standard SNMP network  
management programs such as Hewlett Packard’s HP OpenView™  
and Cabletron’s Spectrum™. In addition, the SysLog Host Daemon  
allows remote monitoring, collecting, and logging of MX2800  
STS-1 events in real time. This information can be useful during  
installation setups and/or troubleshooting.  
Complete configuration, diagnostics, and performance monitoring  
are available through SNMP, Telnet, or a VT-100 terminal  
interface. This connection can be made via ethernet, a local EIA-  
232 link, or through the built-in V.34 modem (see the note at the  
end of this section on page 1-2). The modem can dial-out a “cry for  
help” for units located in unmanned facilities. The MX2800 STS-1  
is designed for either desktop use or for installation in a 19-inch or  
23-inch rack.  
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The major features of the MX2800 STS-1 are as follows:  
Built-in 1:1 redundancy  
Hot-swappable controller cards  
Independent, dual-load sharing, redundant power supplies  
Embedded SNMP and Telnet management through 10BaseT  
ethernet or SLIP/PPP dialup  
Detailed performance monitoring for local and remote units  
Simplified configuration through the VT-100 terminal menu  
structure  
Integrated V.34 modem for dial-up and dial-out access (see the  
following note)  
Capable of backhauling multiple service types (T1/E1)  
AC or DC power  
VT Hairpining  
VT cross-connect to any DS1  
NEBS Level 3 compliant  
Standard 10-year warranty  
Information regarding the built-in modem applies to the following  
list of part numbers: 4200659L1, L2, L3, and L4.  
Controller Card 1:1 Redundancy  
The MX2800 STS-1 supports two hot-swappable controller cards  
which provide 1:1 redundancy for the T1 and STS-1 signals as well  
as the STS-1 connections. With two cards installed, the MX2800  
STS-1 can recover from circuit or network failure, depending on  
the configuration. See Chapter 7, Circuit and Network Redundancy  
for more information.  
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Chapter 1. Introduction  
STS-1 OVERVIEW  
The MX2800 STS-1 multiplexer delivers up to 28 T1s or 21 E1s via  
the SONET Synchronous Transport Signal Level One (STS-1) at a  
speed of 51.84 Mbps. This is a cost-effective way to provide T1/E1  
signals without the need for costly and complex multi-level  
multiplexing/demultiplexing as in an M13 multiplexer. The T1/E1  
signals can be directly multiplexed into the SONET STS-1 signal,  
allowing simplified add and drop functionality.  
The MX2800 STS-1 multiplexer also implements VT hairpining  
and VT cross-connect mapping. Any VT can be hairpinned back to  
the STS-1 signal for dropping further down the SONET ring.  
Cross-connect mapping permits a VT to be mapped to any of the 28  
available physical ports.  
STS-1 Framing  
The STS-1 frame is organized as 9 rows by 90 columns of bytes.  
This frame is transmitted row by row, from left to right, and with  
the most significant bit (MSB) of each byte transmitted first. It is  
defined to operate at the basic rate of 8 kHz or 125 microseconds  
per frame, or 8,000 frames per second at a bit rate of 51.84 Mbps.  
The frame is divided into two parts to physically segregate the  
layers. The first 3 columns make up the transport overhead (TOH);  
the remainder is the synchronous payload envelope (SPE). The  
TOH has 3 rows for the section overhead (SOH) and 6 rows for the  
line overhead (LOH). The SPE has one column for the path  
overhead (POH). The remaining 86 columns are for payload data  
(49.536 Mbps).  
STS-1 Pointers  
There are several mechanisms that allow for timing compensation  
between the STS-1 and its low speed tributaries. The MX2800  
STS-1 multiplexer uses pointer adjustments to achieve timing  
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Chapter 1. Introduction  
compensation. Pointer adjustments allow the synchronous payload  
envelope (SPE) to float with respect to the SONET frame. The  
pointer is contained in the H1 and H2 bytes of the line overhead  
(LOH), and is a count of the number of bytes the J1 byte is away  
from the H3 byte, not including the transport overhead. When  
timing differences exist, dummy bytes are inserted into the SPE  
without affecting data. The receiving end can recover the payload  
since the pointer is adjusted to indicate where the payload overhead  
(POH) starts.  
Transport Overhead (TOH)  
The first three columns are the TOH, which contains the overhead  
bytes for the Section and Line layers. Section overhead is  
comprised of 9 bytes and Line overhead is comprised of 18 bytes.  
STS-1 Synchronous Payload Envelope (SPE)  
The SPE has 87 columns and 9 rows of bytes for a total of 783  
bytes. Column 1 contains the STS Path Overhead and has 9 bytes.  
The remaining 774 bytes are available for payload.  
Virtual Tributaries (VT)  
The SPE is divided into seven virtual tributary groups, made up of  
12 columns each. Smaller tributaries are multiplexed together to  
form these groups. For example, there can be four VT1.5 tributaries  
in a VT group or three VT2 tributaries. A VT1.5 tributary consists  
of three columns per STS-1 frame and has a bit rate of 1.728 Mbps,  
allowing transport of a T1 at 1.544 Mbps plus required overhead. A  
VT2 uses four columns per STS-1 frame and has a bit rate of 2.304  
Mbps, allowing transport of an E1 at 2.048 Mbps plus required  
overhead.  
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Chapter 1. Introduction  
Unit Timing  
The MX2800 STS-1 multiplexer allows three timing methods. The  
first is LOOP timed, in which the multiplexer derives timing from  
the incoming STS-1 signal. A failure in this signal, such as a loss-  
of-signal (LOS) or a loss-of-framing (LOF) will cause the unit to  
enter HOLDOVER (HO) mode for the duration of the receive signal  
defect. During HO, the unit will continue transmitting at the same  
rate as the receive signal prior to entering its defect condition.  
Stability of the transmit during HO is guaranteed to +/- 4.9 ppm  
over 24 hours. The defect condition must be cleared before LOOP  
time mode can be resumed.  
The second mode of operation is FREE-RUNNING (FR) mode. In this  
mode, an internal oscillator is used to generate transmit timing.  
FREE-RUNNING mode provides a SONET minimum clock  
specification of +/- 20 ppm.  
The third timing operation mode is EXTERNAL. EXTERNAL timing  
mode allows the MX2800 STS-1 to derive its transmit timing from  
any one of the 28 DSX-1/E1 physical ports. The ports selected may  
be data carrying ports. Two sources can be specified to provide  
external timing: a primary and a secondary source. Failure of the  
primary source (due to LOS or AIS) will cause the unit to switch to  
the secondary source, if available. In the event that both the primary  
and secondary sources are lost, the unit will enter HOLDOVER mode  
as described previously. Holdover mode will be exited upon  
recovery of at least one clock source.  
SNMP  
The MX2800 STS-1's embedded SNMP feature allows the unit to  
be accessed and controlled by a network manager through the  
10BaseT local area network (LAN) port. The MX2800 STS-1  
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Chapter 1. Introduction  
supports the MIB-II standard, RFC 1213, RFC 1595, and the  
ADTRAN Enterprise Specific MIB.  
MIB files are available at www.adtran.com.  
The term SNMP broadly refers to the message protocols used to  
exchange information between the network management system  
(NMS) and the managed devices, as well as to the structure of  
device management databases. SNMP has three basic components,  
the network manager, the agent, and the MIB.  
Network Manager  
The network manager is a set of control programs that collect,  
control, and present data pertinent to the operation of the network  
devices. These programs reside on a network management station.  
Agent  
The agent is a control program that resides in every network device.  
This program responds to queries and commands from the network  
manager, returns requested information or invokes configuration  
changes initiated by the manager, and sends unsolicited traps to the  
manager.  
MIB  
A MIB is an industry standard presentation of all status and  
configuration parameters supported by a network device.  
TELNET  
Telnet provides a password-protected, remote login facility to the  
MX2800 STS-1 that allows a remote user to control the MX2800  
STS-1 through the terminal menus. Only one Telnet session may be  
active at a time.  
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Chapter 1. Introduction  
TL1  
Transaction Language 1 (TL1) is an ASCII based language that  
supports both command-response and autonomous (NE) message  
generation. Commonly, TL1 is used over a X.25 packet network  
but is completely independent of any physical layer protocols. For  
the MX2800 STS-1, TL1 is implemented as a Telnet session  
running over either Ethernet or PPP. Only one TL1 Telnet  
connection can be active at a time.  
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Chapter 1. Introduction  
AVAILABLE OPTIONS  
The following optional equipment is available for use with the  
MX2800 STS-1. Contact your local distributor or the ADTRAN  
sales department for more information (see front section of this  
manual for phone number).  
Breakout Panel (P/N 1200291L1)  
The optional breakout panel connects to the MX2800 STS-1 and  
provides 28 RJ connectors for the individual T1s/E1s. Shipment  
includes two six-foot, 64-pin to 64-pin Amp cables which allow  
direct cabling to the MX2800 STS-1 (see Connecting the Breakout  
Panel on page 2-6 for more information).  
Battery Backup (P/N 4175043L2)  
The battery backup system provides power backup in the event of  
power loss. This system includes the battery, an AC battery  
charger, and an alarm cable.  
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Chapter 2  
Installation and Operation  
UNPACK, INSPECT, POWER UP  
Receiving Inspection  
Carefully inspect the MX2800 STS-1 for any damage that might  
have occurred in shipment. If damage is suspected, file a claim  
immediately with the carrier and contact ADTRAN Technical  
Support (see the front section of this manual for phone numbers).  
Keep the original shipping container to use for future shipment or  
verification of damage during shipment.  
ADTRAN Shipments Include  
The following items are included in shipments of the MX2800  
STS-1:  
MX2800 STS-1 unit  
DC or AC power supply (two power supplies come with the  
Redundant versions)  
Controller card (two cards come with the Redundant versions)  
8-pin to 6-pin modular cable (Modem version only)  
8-pin to 8-pin modular cable  
8-pin modular to DB-9 female connector  
Two 4-position terminal lug connectors  
3-position terminal lug connector  
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Six-foot AC power cord (AC Versions only)  
Mounting ears and screws for 19-inch or 23-inch rack  
installation  
User Manual or CD containing the User Manual  
The ADTRAN MX2800 STS-1 MIB is available at www.adtran.com.  
Power Up  
The AC version of the MX2800 STS-1 is provided with a six-foot  
power cord, terminated by a three-prong plug which connects to a  
grounded 120 VAC power receptacle.  
Power to the AC version of the MX2800 STS-1 must be provided from  
a grounded 120 VAC, 60 Hz receptacle.  
The DC version of the MX2800 STS-1 is provided with two  
4-position modular terminal lug connectors. These connectors  
make it easier to perform initial wiring and to connect and  
disconnect DC power when replacing rackmount units.  
For more detailed information on power connections, refer to  
Chapter 8, Power Loss Recovery.  
Once the modular connector is wired, push it firmly into one of the  
rear panel POWER connectors. Figure 2-1 and Table 2-1 on page  
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2-3 illustrate the DC power connector and give definitions for the  
four connector symbols.  
The chassis should be connected to an earth ground using the  
ground stud located between the AC and DC power sources on the  
rear panel.  
N
ET  
PWR  
FAIL  
PWR  
FAIL  
Figure 2-1. DC Power Connector  
Table 2-1. DC Connector Symbol Definitions  
Symbol  
Definition  
Battery backup connection. If AC fails, a trap is sent to  
PWR FAIL alert user when connected to the 4175043L2 battery  
backup system or equivalent  
-
Negative side of DC power source (usually -48V)  
Positive side of DC power source (usually ground)  
RET  
Frame Ground  
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The following UL requirements must be met during installation of  
the MX2800 STS-1 DC version:  
1. Disconnect all power sources prior to servicing (unit may use  
multiple power sources).  
2. Input: Minimum 48 VDC, 0.8 A  
Minimum 120 VAC, 0.32 A  
3. Connect to a reliably grounded -48 VDC source which is  
electrically isolated from the AC source.  
4. The branch circuit overcurrent protection shall be a fuse or  
circuit breaker rated minimum 48 VDC, maximum 20 A.  
5. A readily accessible disconnect device that is suitably approved  
and rated, shall be incorporated in the field wiring.  
6. The chassis should be connected to an earth ground using the  
ground stud located between the AC and DC power sources on  
the rear panel.  
7. The unit shall be installed in accordance with the requirements  
of NEC NFPA 70.  
8. The unit shall be installed in accordance with Articles 400 and  
364.8 of the National Electrical Code NFPA 70 when installed  
outside of a Restricted Access Location (i.e. Central Office,  
behind a locked door, or service personnel area only).  
9. Care should be taken not to upset the stability of the equipment  
rack after installation is complete.  
To meet the UL requirements during installation, use copper  
conductors only.  
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Chapter 2. Installation and Operation  
RACKMOUNT INSTALLATION  
The MX2800 STS-1 can be mounted into a standard 19-inch or  
23-inch equipment rack. Follow these steps to mount your unit into  
a rack:  
1. Prepare the MX2800 STS-1 mounting ears by scraping the  
paint away from the mounting ears’ portion that makes contact  
with the rack and the portion where the screw mounts into the  
side of the MX2800 STS-1.  
2. Install the mounting flanges on each side of the MX2800 STS-1  
at one of the three available positions.  
Be sure to install the flanges with the screws provided.  
3. After the flanges have been installed, position the MX2800  
STS-1 at the correct location within the rack and secure the  
mounting flanges to the mounting rails of the rack.  
4. Make all network, DTE, and power connections to the rear of  
the unit. See Power Up on page 2-2 for more information on  
making the DC power connection.  
5. Using the 8-position modular to DB-9 female connector and the  
8-position modular to 8-position modular cable, connect a  
VT 100 terminal device to the CRAFT port on the front panel of  
the unit.  
Two MX2800 STS-1s may be stacked with no spacing between units.  
ADTRAN recommends 1U (1.75") of separation above and below the  
two stacked units. This spacing allows the unit to dissipate heat. The  
design of the MX2800 STS-1 uses the chassis to distribute heat  
generated by the unit's internal cards. This design allows the unit to  
operate without a cooling fan, which increases its overall reliability.  
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Connecting the Breakout Panel  
The optional breakout panel (P/N 1200291L1) connects to the  
MX2800 STS-1 via the IN and OUT Champ connectors located on  
the back of the unit, and provides 28 RJ connectors for the  
individual T1s/E1s. Shipment includes two six-foot, 64-pin to  
64-pin Amp cables which allow direct cabling to the  
MX2800 STS-1. Connect the breakout panel’s IN Champ connector  
to the MX2800 STS-1’s IN Champ connector and the breakout  
panel’s OUT Champ connector to the MX2800 STS-1’s OUT Champ  
connector (see Figure 2-2).  
Front View  
2
4
6
8
10  
12  
14  
16  
18  
20  
22  
24  
26  
28  
1
3
5
7
9
11  
13  
15  
17  
19  
21  
23  
25  
27  
A
C
T
N
E
T
A
L
M
P
R
F
Rear View  
IN  
OUT  
Cable 2  
115VAC 50/60HZ  
0.8a  
NET  
DC POWER  
NONCRITICAL  
NO COM NC  
DSX-1/E1  
(OUT)  
L
A
B
A
N
PWR  
FAIL  
PWR  
FAIL  
RET  
RET  
A
OUT  
IN  
B
M
O
D
E
DSX-1/E1  
(IN)  
USE COPPER  
CONDUCTORS ONLY!  
Cable 1  
M
CRITICAL  
Figure 2-2. The Breakout Panel  
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Chapter 2. Installation and Operation  
REAR PANEL  
The MX2800 STS-1 rear panel is equipped with a LAN port, a  
modem port, two alarm output terminal blocks, two sets of NET  
in/out jacks, two Amphenol (Amp) connectors, and DC/AC power  
connections. Figure 2-3 illustrates the rear panel and identifies its  
equipment. Descriptions for these items follow the figure. Pin  
assignments are given in Appendix A, Pinouts.  
115VAC 50/60HZ  
0.8a  
NET  
3
DC POWER  
NONCRITICAL  
DSX-1/E1  
(OUT)  
L
A
A
N
1
2
7
PWR  
FAIL  
PWR  
FAIL  
RET  
RET  
A
OUT  
IN  
8
4
5
NO COM NC  
CRITICAL  
B
M
O
D
E
DSX-1/E1  
(IN)  
USE COPPER  
CONDUCTORS ONLY!  
B
6
M
#
Item  
Function  
10BaseT LAN connection  
1
LAN  
Note: The LED to the right of this connector illuminates  
when the unit is connected to an active ethernet seg-  
ment.  
2
Modem  
Telephone line connection for internal V.34 modem (see  
note on page 2-8)  
3
4
5
6
7
Noncritical/Critical Connections for external audible/visible alarms  
NET  
Network service connections for controller cards A and B  
64-pin Amp connectors for T1/E1s  
DC power connection  
DSX-1/E1  
Power  
Ground stud  
8
115 VAC 50/60Hz AC power connection  
Figure 2-3. MX2800 STS-1 Rear View  
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LAN Port  
The LAN port is an 8-pin modular connector that provides a  
10BaseT ethernet LAN interface. This LAN interface is used for  
SNMP and Telnet control.  
Connect the LAN port to intra-building wiring only.  
Modem Port  
The MODEM port is an 8-pin modular jack that provides a telephone  
line (POTS) connection for the internal V.34 modem.  
The MX2800 STS-1 can be configured as a dial-in host and also as  
a dial-out-on-Trap device (meaning the unit dials out to a specified  
host to report error conditions).  
Information regarding the built-in modem applies to the following list  
of numbers: 4200659L1, L2, L3, and L4.  
Noncritical and Critical Alarm Connectors  
The alarm connectors connect to the three contacts of a Form C  
type relay on the main board of the MX2800 STS-1. This relay is  
activated any time the MX2800 STS-1 detects an alarm condition  
on the STS-1 network interface. Both NC (normally closed) and NO  
(normally open) contacts are provided.  
Connect alarms to one of the three-position modular terminal lug  
connectors (provided). These connectors make it easier to perform  
initial wiring and to connect and disconnect alarms when replacing  
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rackmount units. Once a modular connector is wired, push it firmly  
into the rear panel NONCRITICAL or CRITICAL connector.  
The alarm functions can be enabled or disabled through the ALARM  
RELAYS section of the CONFIGURATION menu (see the section Alarm  
Relays on page 3-18).  
Network Interfaces  
The network interfaces are full-duplex circuits provided by four  
BNC coaxial cable connections (two for each controller card). The  
receive data from the network is connected to the RX (IN)  
connectors, while the transmit data from the MX2800 STS-1 is  
connected to the TX (OUT) connectors.  
Network interfaces must be connected using coaxial cables that have  
the shields grounded at both ends.  
DSX-1/E1 Interfaces  
The DSX-1/E1 interfaces are 64-pin Amp connectors. These  
interfaces provide Tx and Rx connections between the unit and  
equipment such as wire-wrap patch panels, punch-down panels, or  
breakout panels.  
Connect the DSX-1/E1 interfaces to intra-building wiring only.  
Power Connection  
The DC and AC power connections are described earlier in this  
chapter on page 2-2.  
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FRONT PANEL  
The MX2800 STS-1 faceplate is shown below in Figure 2-4.  
Descriptions of each part of the front panel follow.  
A
C
T
N
E
T
A
L
M
P
R
F
Figure 2-4. MX2800 STS-1 Front Panel  
Craft Port  
The CRAFT port, an 8-pin modular jack, provides connection to a  
VT-100 EIA-232 compatible interface using the supplied 8-pin  
modular to DB-9 female connector and the 8-pin to 8-pin modular  
cable.  
Establishing Terminal Connection  
To connect the MX2800 STS-1 to a VT-100 terminal, follow the  
steps below:  
1. Configure the VT-100 terminal for 9600, 19200, 38400, or  
57600 baud, 8-bit characters, no parity, and one stop bit (xxxx,  
8N1).  
2. Using the terminal interface cable adapter provided by  
ADTRAN, connect the DTE port of a terminal to the 8-pin  
modular jack labeled CRAFT on the MX2800 STS-1 front  
panel.  
3. Initialize the terminal session.  
4. Press Enter repeatedly until the password prompt appears.  
5. Enter the password. The factory default password is adtran (all  
lower-case). The MAIN MENU appears (see Figure 2-5 on page  
2-11).  
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6. Make selections by entering the number corresponding to the  
chosen parameter. Press ESC on the keyboard to return to the  
previous screen. End a terminal session by selecting LOGOUT  
from the MAIN MENU or by pressing Ctrl-C at any time.  
Figure 2-5. Terminal Main Menu  
The letter displayed in the upper left-hand corner of the terminal menu  
indicates which controller card is active (A or B).  
Navigating Within the Menus  
Navigate within the MX2800 STS-1 terminal menus using the  
following procedures:  
If you want to...  
Press...  
select an item  
the number corresponding to your choice,  
and then press the Enter key  
scroll left and right  
within the same  
screen  
the left and right arrow keys. Additional  
screens are available when < or > is dis-  
played in the top portion of the menu  
return to the previous the ESC key  
menu  
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If you want to...  
Press...  
Ctrl-C  
end the terminal  
session  
refresh the display  
The MX2800 STS-1 MAIN MENU consists of the following sections:  
Status  
Provides information on the current state of the STS-1, power  
supplies, system, and VT/Port lines. For more detailed information,  
see Chapter 4, Status.  
Statistics  
Provides detailed statistical information (both current and  
historical) for the STS-1, VT, and Port lines. For more detailed  
information, see Chapter 5, Statistics.  
Configuration  
Sets STS-1 network, VT/Port, and system management parameters.  
For more detailed information, see Chapter 3, Configuration.  
Diagnostics  
Performs loopback tests over the STS-1, VT/Port lines. For more  
detailed information, see Chapter 6, Diagnostics.  
Logout  
The LOGOUT selection ends the terminal session and logs out of the  
system. Password entry is required before a new session can begin.  
The unit will also logout of a terminal session automatically if the  
session remains inactive for a certain period of time. For more  
information, see Terminal Timeout on page 3-35.  
ACO Buttons  
The ACO (alarm cut off) buttons allow you to turn off an active  
audible alarm. The buttons are recessed, so you must use a pen or  
other pointed instrument to press them. Once you have used an ACO  
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button to deactivate an alarm, it remains disabled until the condition  
has cleared.  
Alarms can also be turned off remotely by using a selection found  
in the STATUS menu. See Acknowledge Alarms (ACO) on page 4-12  
for more information.  
LED Descriptions  
The MX2800 STS-1 has LED status indicators for the power  
supplies, the STS-1 state, the controller cards, and the individual  
T1s/E1s. These LEDs are identified in the following subsections.  
Power Supply A/B  
The PWR LED is active when the unit is on and receiving full  
power. The CHK LED is active when the power supply is failing or  
is providing low power and needs to be checked.  
Status LEDs  
The STATUS LEDs apply to the two controller cards. The LEDs  
provided are ACT (active), NET, ALM (alarm), and PRF  
(performance). Different conditions are indicated by the state of the  
LED (it remains solid, blinks, or alternates colors). The condition  
descriptions vary depending on whether the LED represents the  
active controller card or the controller card on standby. LED  
definitions are for the active cards are provided in Table 2-2 on  
page 2-14. LED definitions for T1/E1 cards are provided in Table  
2-3 on page 2-15.  
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Table 2-2. LED Conditions for Active Cards  
LED State  
green solid  
Card Condition  
Normal (All OK)  
green/amber alternating  
red solid  
Normal + Console Open  
Self Test Failed  
ACT  
amber solid  
Software Update in Progress  
red/amber alternating  
Self Test Failed + Console  
Open  
red blinking  
green solid  
red blinking  
red solid  
Card Failure  
Normal (All OK)  
LOS  
LOFM. AIS-P, AIS-L, RFI-L,  
RFI-P, LOP, SLM, UEQ  
NET  
amber solid  
In Test (Local)  
amber blinking  
red/amber alternating  
green solid  
In Test (Remote)  
In Test + Alarms  
Normal (No Alarm)  
Critical Alarm  
red blinking  
red solid  
Non-Critical Alarm  
ALM amber blinking  
Critical Alarm Suppressed  
(ACO button was pushed)  
amber solid  
Non-Critical Alarm Sup-  
pressed (ACO button was  
pushed)  
green solid  
Normal (All OK)  
red flash (once per event) Single/Burst CV  
PRF  
red blinking  
red solid  
Continuous Code Violations  
XCV Threshold Exceeded  
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Table 2-3. LED Conditions for Standby Cards  
LED State  
Card Condition  
Normal (All OK)  
green blinking  
amber solid  
red blinking  
off  
ACT  
NET  
Software Update in Progress  
Self Test Failed  
Normal (All OK)  
red blinking  
STS-1 Failure  
ALM off  
PRF  
off  
Normal (No Alarm)  
Normal (All OK)  
T1/E1 Status LEDs  
These LEDs apply to each individual T1 or E1. Different conditions  
are indicated by the state of the LED (its color and whether it  
flashes, alternates color, or remains solid). The condition  
descriptions vary depending on whether the LEDs represent T1s or  
E1s of the active controller card or the controller card on standby.  
Table 2-4 on page 2-16 provides LED definitions for the active and  
standby cards.  
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Table 2-4. T1/E1 LED Conditions  
LED State  
green solid  
off  
T1/E1 Condition  
Normal (All OK)  
Disabled  
red blinking  
LOS  
red flash (once per  
event)  
Single/Burst CV  
Active  
Card  
red/green alternating  
amber solid  
XCV Threshold Exceeded  
In Test (Local)  
amber blinking  
In Test (Remote)  
red/amber alternating In Test + Alarm  
off  
Normal (All OK) or  
N/A (in the case of E1 con-  
figuration)  
Standby  
Card  
red blinking  
T1/E1 Failure  
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Chapter 3  
To configure the MX2800 STS-1, use a 10BaseT ethernet  
connection, a SLIP/PPP modem port, or a VT-100 terminal. Figure  
3-1 shows the CONFIGURATION menu and Figure 3-2 on page 3-2  
shows the menu tree.  
Figure 3-1. Configuration Menu  
Detailed descriptions of the menu options shown in Figure 3-1 are  
given in the following sections.  
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Chapter 3. Configuration  
Line Length  
Timing  
STS-1 Configuration  
XCV Threshold  
VT Mode  
Network Interface  
Active Controller  
Protection Configuration  
Miscellaneous  
Network Protection  
Max Switch Threshold  
Min Switching Period  
Loopback Timeout  
PRI Ext. Clock  
External Clock Configuration  
VT/Port Mapping>  
T1 State  
First  
Last  
VT Interface #1-28  
T1 Coding  
State  
T1 Remote Loopbacks  
T1 Circuit Protection  
Hairpin Loopback  
Line ID  
Line Coding  
T1 Line Length  
Circuit Protection  
Loopback Detection  
Apply State  
VT Interface  
Set Multiple  
Set Cross-Connect Mapping  
Restore VT Mapping Defaults  
Protection Threshold  
XCV Threshold  
Apply Line Length  
Apply Circuit Protection  
Apply Loopback Protection  
Apply All  
Local IP Address  
Gateway IP Address  
Subnet Mask  
Management Port  
Dial-up Options  
TL1 Setup  
Trap IP Address  
Trap Generation  
MGMT Options  
Read Community Name  
Write Community Name  
Trap Community Name  
System  
SNMP MGMT Options  
Management  
Password  
Terminal Timeout  
IP Security  
IP Hosts  
Alarm Relay Configuration  
Equipment Identification  
Syslog Setup  
System Security  
Date & Time  
Miscellaneous  
Save on Logout  
Craft baud rate  
Load Default Settings  
Update FLASH Software  
Config Transfer  
Update via XMODEM  
Utilities  
Update via TFTP Server  
Server ID  
Server Filename  
Load and Use  
System Reset  
Immediate  
Save Config Remotely  
Save Configuration  
Scheduled Reset Time  
Figure 3-2. Configuration Menu Tree  
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Chapter 3. Configuration  
NETWORK INTERFACE  
Select NETWORK INTERFACE to access the network configuration  
parameters (see Figure 3-3). Configure the MX2800 STS-1  
network settings to match the STS-1 signal received from the  
service provider.  
Figure 3-3. Network Configuration Menu  
STS-1 Configuration  
Use the STS-1 CONFIGURATION selections described below to  
configure the STS-1 network settings to match your application.  
Line Length  
Timing  
Set the line length to reflect the physical length of the STS-1  
network line. Set to LONG if the cabling distance is between  
225-450 feet; set to SHORT if the distance is less than 225 feet.  
Selects the source of timing used to derive the transmit signal. The  
MX2800 STS-1 has three modes of timing operation: LOOP, FREE-  
RUN, and EXTERNAL. LOOP timing configures the unit to recover  
clocking from the STS-1 receive signal. Loss of the STS-1 receive  
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Chapter 3. Configuration  
signal or reception of AIS will cause the unit to enter hold-over  
mode. The STS-1 receive signal must be valid for at least 10  
seconds for the unit to exit hold-over mode and restore loop timing.  
When the unit is configured for FREE-RUN timing mode, timing is  
derived from a +/-20 ppm internal reference providing a SONET  
Minimum Clock (SMC).  
Setting the unit to EXTERNAL timing mode configures the unit to  
derive clocking from one of the two external sources selected in the  
PRI EXT. CLOCK and SEC EXT. CLOCK options. These two entries  
select which of the 28 active T1/E1 ports will be used as the  
external clock source. The external clock source may be disabled (if  
only one source exists, or no external clock sources are desired). A  
valid clock source is one on which neither LOS or AIS conditions  
exist. The selected T1/E1 may be a data carrying tributary. When  
both sources are configured, failure of one source will cause the  
unit to switch to the other source (if it is a valid source). Failure of  
both sources will cause the unit to enter hold-over mode. At least  
one external clock source must be valid for at least 10 seconds for  
the unit to exit hold-over mode and restore external clock timing.  
Switching between PRImary and SECondary external clock sources  
is non-reverting.  
XCV Threshold  
The XCV THRESHOLD (excessive code violations threshold) sets a  
limit on code violations accepted by the unit before it switches  
controller cards. If set to DISABLED, code violations will not cause  
the unit to switch controller cards. The threshold limits are  
described in the following chart:  
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Setting  
The unit switches controller cards if...  
more than one out of every 1,000 bits received on the  
STS-1 contains a code violation.  
1E-3  
more than one out of every 10,000 bits received on  
the STS-1 contains a code violation.  
1E-4  
1E-5  
1E-6  
more than one out of every 100,000 bits received on  
the STS-1 contains a code violation.  
more than one out of every 1,000,000 bits received on  
the STS-1 contains a code violation.  
VT Mode  
The STS-1 can frame the 7 VT groups as either VT1.5 or VT2.  
When set for VT1.5 (T1), all VT groups are set for VT1.5[TU=11]  
at 1.728 Mbps and the ports are set for T1 at 1.544 Mbps. When set  
for VT2 (E1), all the VT groups are set for VT2[TU-12] at  
2.304 Mbps and the ports are set for E1 at 2.048 Mbps. When set  
for VT2, the last 7 VTs, VT 22-28, become unavailable. All E1  
ports are available for mapping.  
Protection Configuration  
The MX2800 STS-1 houses two controller cards for 1:1 protection  
against hardware failure. The two cards can also provide network  
protection, supporting two STS-1 circuits simultaneously. The  
selections in this menu allow you to customize the unit’s protection  
setup.  
Active Controller  
This field displays A or B, indicating the active controller card. This  
setting can be used to force the controller cards to switch. For  
example, if controller card A is active and you select B, a switch-  
over occurs immediately.  
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Chapter 3. Configuration  
Network Protection  
Enable or disable the unit’s ability to automatically route  
information to the backup STS-1 in the event of a primary STS-1  
failure. With NETWORK PROTECTION set to ENABLED, all information  
is automatically routed to the backup STS-1 in the event that the  
DISABLED, the stand-by controller will be used to protect against  
failures of the circuitry on the active controller.  
When choosing a setting for NETWORK PROTECTION, there are many  
cabling and network provisioning issues to consider. For configuration  
examples of the different modes of protection, refer to  
Chapter 7, Circuit and Network Redundancy.  
Max. Switch Threshold  
The value entered in this field determines the number of times per  
hour the unit is allowed to switch between controller cards. If the  
cards switch more than the MAX SWITCH THRESHOLD within one  
hour, the unit issues a trap and stops switching cards for the next 24  
hours. The default setting is 3 times an hour.  
Min. Switching Period  
After the unit switches controller cards, the number of seconds  
entered in this field must pass before another card switch will be  
allowed. The default setting is 10 seconds.  
Miscellaneous  
Loopback Timeout  
Sets the loopback timeout to DISABLED, 1 MIN., 5 MIN., 10 MIN.,  
15 MIN., 30 MIN., 45 MIN. or 1 HR.  
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External Clock Configuration  
PRI Ext. Clock and SEC Ext. Clock - When timing is set to  
external, these entries allow selection of the primary and secondary  
clock source. Any one of the 28 ports, so long as it is active, can be  
used. If the selected port does go into AIS or LOS, the selected  
clock becomes invalid.  
VT INTERFACE  
The VT INTERFACE menu (shown in Figure 3-4 on page 3-7) allows  
you to activate/deactivate individual T1s and E1s and to set their  
line coding, length, loopback detection, circuit protection, and line  
ID string. The T1/E1 code violation threshold is also configured  
through this menu. Configuration selections are described in the  
sections following Figure 3-4 on page 3-7.  
A VT group can be divided into either three E1s or four T1s. Therefore,  
when dealing with an E1 configuration, some of the fields in the VT  
INTERFACE menus do not apply (and therefore display N/A).  
Figure 3-4. VT Interface Menu  
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VT Interface #1-28  
The VT Interface menu allows the user to map a Port (T1/E1) to a  
VT, activate/deactivate the T1 and E1 mapped to the VT, and to set  
the line coding, length, loopback detection, circuit protection, line  
ID string, and disable/enable the hairpin loopback. Configuration  
selections are described in the section following Figure 3-5.  
Figure 3-5. Configure VT Interface #1 Menu  
VT/Port Mapping  
Map a T1/E1 port to a VT. Any available port (1-28) can be  
mapped to a VT. An error will be returned if the port is already  
mapped to another VT. Selecting UNEQUIPPED will free the port  
from mapping and disable the VT.  
T1 State  
Set unused T1 lines to DISABLED. Set used T1 lines to ENABLED.  
T1 Coding  
Set the line code for each individual T1 interface to match the  
connected device. The choices available for T1 are AMI and B8ZS.  
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T1 Line Length  
Set the line length for each T1 interface according to the distance  
from the MX2800 STS-1 to your DTE device. Set to -7.5 DB if the  
attached DTE device only supports DS1 levels.  
T1 Remote Loopback  
Allows a selected T1 to respond to CSU or NIU loopbacks arriving  
from the STS-1 side.  
T1 Circuit Protection  
T1 Circuit Protection determines which circuit will be allowed to  
initiate a protection switch if a failure in the circuitry for that  
channel is detected. If a T1 is set to DISABLED, then the failure of the  
circuitry of that one channel will not cause a protection switch. If  
set to ENABLED, then the failure of a channel could cause a  
protection switch to occur (depending on the PROTECTION  
THRESHOLD setting).  
Hairpin Loopback  
Hairpin back the VT to the STS-1 signal for dropping farther down  
the SONET ring.  
Line ID  
Enter user-configurable text strings to name the individual T1 lines.  
This field will accept up to 18 alpha-numeric characters, including  
spaces and special characters (such as an underbar).  
Set Multiple  
SET MULTIPLE (see Figure 3-6 on page 3-10) can be used to enable/  
disable a contiguous group or all of the VTs at one time. It may also  
be used to make multiple changes to the line coding, length, circuit  
protection or loopback detection of a contiguous group or all VTs at  
one time.  
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Chapter 3. Configuration  
To make changes to all VTs, set FIRST to 1 and LAST to 28. Make  
the necessary changes and select APPLY ALL (or select the APPLY  
option that corresponds to the change made) before leaving the  
menu. To make changes to some of the VTs, set the FIRST and LAST  
fields to correspond to the lines you want to change. Select APPLY  
ALL (or select the APPLY option that corresponds to the change  
made). You can now either leave the menu or continue to enter new  
FIRST and LAST numbers for other lines. Remember to apply the  
settings following each change.  
Figure 3-6. Set Multiple Menu  
Set Cross-Connect Mapping  
Any VT can be cross-connect mapped to any available T1/E1 port.  
Selecting UNEQUIPPED will free the port and disable the VT. The  
default mapping for VTs 1-28 is 1-to-1.  
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Figure 3-7. Set Cross-Connect Mapping Menu  
Restore Defaults  
Restores VT mapping to 1-to-1 mapping.  
Restore VT Mapping Defaults  
Select RESTORE VT MAPPING DEFAULTS from the VT INTERFACE  
configuration menu. The following message will display on the  
screen: !WARNING! RESTORING DEFAULTS WILL DISRUPT TRAFFIC.  
Select CONFIRM to continue or press Esc to abort.  
Protection Threshold (1-28)  
The PROTECTION THRESHOLD setting determines how many of the  
ENABLED lines must fail before a card switch occurs. If you want the  
failure of a single protected (enabled) line to cause a card switch,  
set the PROTECTION THRESHOLD to 1. Choices include 1 through 28.  
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Chapter 3. Configuration  
XCV Threshold  
Set a limit on code violations (CVs) accepted by the unit over an  
individual T1/E1 line before it switches controller cards (see Figure  
3-8). If set to DISABLED, code violations will not cause the unit to  
switch controller cards. The threshold limits are described in the  
following chart:  
Setting  
The unit switches controller cards if...  
more than one out of every 1,000 bits received on a  
T1/E1 line contains a code violation  
1E-3  
more than one out of every 10,000 bits received on a  
T1/E1 line contains a code violation.  
1E-4  
1E-5  
1E-6  
more than one out of every 100,000 bits received on a  
T1/E1 line contains a code violation.  
more than one out of every 1,000,000 bits received on  
a T1/E1 line contains a code violation.  
Figure 3-8. XCV Threshold Menu  
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Chapter 3. Configuration  
SYSTEM MANAGEMENT  
Configure the MX2800 STS-1 for management through SNMP,  
Telnet, or a VT-100 interface (see Figure 3-9). Embedded SNMP  
and Telnet are available via a SLIP/PPP modem port or 10BaseT  
ethernet interface. This menu also includes options used to  
customize your unit’s alarm and trap generation, security setup, and  
equipment identification.  
Figure 3-9. System Management Configuration Menu  
Configuration changes to LOCAL IP ADDRESS, GATEWAY IP  
ADDRESS, SUBNET MASK, MANAGEMENT PORT, MODEM MODE,  
MODEM BAUD RATE, and IP HOSTS will not be implemented unless  
all Telnet sessions are closed. Changes made while Telnet sessions  
are active will invoke a warning message on the console.  
If the unit is not equipped with an internal modem, the MANAGEMENT  
PORT option and DIALUP OPTIONS will not be available.  
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Chapter 3. Configuration  
Management Options  
Local IP Address  
Enter the MX2800 STS-1 IP address. This IP address applies to the  
LAN or modem port (when configured for PPP or SLIP). This  
address is available from your network administrator.  
Gateway IP Address  
Enter the gateway IP address of the MX2800 STS-1. This address is  
necessary only if the MX2800 STS-1 and the network manager are  
connected through a gateway node. If an IP packet is to be sent to a  
different network, the unit sends it to the gateway.  
Subnet Mask  
Enter the subnet mask of the MX2800 STS-1. This address is  
available from your network administrator.  
Management Port  
Assign the management port as either LAN or Modem. The Modem  
setting applies only to units equipped with an internal modem.  
Dialup Options  
Configure the dialup capabilities of the MX2800 STS-1 (see Figure  
3-10 on page 3-15). These options apply only to units equipped  
with an internal modem.  
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Chapter 3. Configuration  
Figure 3-10. Dialup Options Menu  
Primary and Secondary Phone Numbers  
When the MX2800 STS-1 dials out to send a trap, it first dials the  
PRIMARY PHONE NUMBER. If the call is unsuccessful, it tries the  
SECONDARY PHONE NUMBER. Attempts between the two numbers  
continue until a call is established and the trap is reported (or until  
each number’s maximum for redial attempts is reached; see  
Maximum Redial Attempts below).  
Initializing String  
The AT command entered in this field is used to initialize the  
modem. Normally, this field should be left at the default setting  
(ATZ).  
Dial String  
The AT command entered in this field causes the modem to dial  
out. Normally, this field should be left at the default setting  
(ATDT).  
Maximum Redial Attempts  
The MX2800 STS-1 attempts to establish a call the number of times  
entered in this field. If a successful call is not established after the  
final attempt, the MX2800 STS-1 discards the trap messages.  
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Chapter 3. Configuration  
Idle Timeout  
After establishing a call and sending trap messages, the MX2800  
STS-1 remains online for the amount of seconds entered in this  
field. If the field is set to 0, the unit hangs up as soon as the trap is  
sent.  
Connection Timeout  
The MX2800 STS-1 waits for a connection the amount of seconds  
entered in this field. Timing begins as soon as the dial command is  
issued. This field must be set for greater than 20 seconds.  
Pause Between Calls  
The MX2800 STS-1 waits between redial attempts the number of  
seconds entered in this field.  
Dialout On Trap  
Enable or disable the MX2800 STS-1’s ability to dial out to report  
traps. MODEM MODE configured for VT-100 reports error conditions  
in plain ASCII with the following information:  
The Unit ID value programmed in the EQUIPMENT IDENTIFICATION  
portion of the SYSTEM MANAGEMENT screen (see System  
Management on page 3-13)  
A text description of the fault  
The date and time when the error was logged  
When MODEM MODE is configured for PPP or SLIP, the MX2800  
STS-1 logs into the PPP/SLIP host and reports the error conditions  
to the hosts designated under TRAP IP ADDRESSES (see Trap IP  
Addresses on page 3-25).  
Answer on Ring  
Enable or disable the MX2800 STS-1’s ability to accept incoming  
calls. If enabled, incoming calls are automatically answered by the  
MX2800 STS-1, allowing you to remotely perform management  
functions.  
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Chapter 3. Configuration  
Modem Mode  
Select the Modem port function for your application (VT-100, PPP,  
or SLIP). The Modem port, located on the rear panel of the  
MX2800 STS-1, provides a telephone line (POTS) for connection  
to the internal V.34 modem. This setting applies only if the  
MANAGEMENT PORT (see Management Port on page 3-14) is set to  
MODEM.  
Modem Baud Rate  
Set the maximum operating speed of the Modem port (1200, 2400,  
4800, 9600, 19200, and 38400 bps).  
Hangup  
Selecting this option forces the MX2800 STS-1 to end an  
established call.  
Last Modem Response  
This status field displays the last modem response to the MX2800  
STS-1. Possible responses include OK, CONNECT, BUSY, ERROR,  
NO DIALTONE, and NO CARRIER.  
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Chapter 3. Configuration  
Alarm Relays  
Alarm Relay Configuration  
Enables audible and visible alarms for specific error conditions (see  
Figure 3-11). The following charts describe the alarm conditions  
found in each menu. Conditions marked in the charts with an  
asterisk (*) sound the critical alarm when enabled. All other  
conditions sound the non-critical alarm.  
Figure 3-11. Alarm Relay Configuration Menu  
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Chapter 3. Configuration  
STS-1 Alarms  
Alarm  
Description  
LOS  
(Loss of Signal)  
The unit has lost the network receive signal.  
LOF  
(Loss of Framing)  
The unit detects a framing loss from the  
network.  
LOP  
(Loss of Pointer)  
The unit is unable to detect a valid pointer in the  
receive signal.  
LOMF  
AIS-L  
(Loss of Multiframe)  
The unit detects loss of H4 multiframe from the  
network.  
(Line Alarm Indication Signal)  
The unit is receiving a line alarm indication  
signal. The Section Terminating Equipment  
generates AIS-L after detecting LOS or LOF.  
AIS-P  
RFI-L  
(Path Alarm Indication Signal)  
The unit is receiving a path alarm indication  
signal. AIS-P is defined as all ones in bytes H1,  
H2, and H3 as well as all ones in the entire STS  
synchronous payload envelope.  
(Line Remote Failure Indication)  
The unit is receiving a line remote failure  
indication. RFI-L is declared when the incoming  
line remote defect indication (RDI-L, “110”  
pattern in bits 6, 7, and 8 of the K2 line overhead  
byte) lasts for 2.5 +/- 0.5 seconds.  
RFI-P  
(Path Remote Failure Indication)  
The unit is receiving a path remote failure  
indication. RFI-P is declared when the incoming  
path remote defect indication (RDI-P, “1” in bit 5  
of the G1 path overhead byte for contiguous  
frames) lasts for 2.5 +/- 0.5 seconds.  
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Chapter 3. Configuration  
Alarm  
Description  
SLM-P  
(Path Signal Level Mismatch)  
A received signal label is mismatched if it does  
not equal the locally provisioned value or the  
value “equipped non-specific”.  
UEQ-P  
XCV  
(Path Unequipped)  
The path is unequipped if it is not provisioned.  
Byte C2 of the STS path overhead is set to zero.  
(Excessive Code Violations)  
The controller is receiving excessive code  
violations exceeding the threshold set by the  
user (see XCV Threshold on page 3-12).  
TLOS  
(Transmit Loss of Signal)  
The transmitter has failed.  
JTRACE  
(STS Receive Path Trace)  
Received in the J1 path overhead byte. This  
byte is used to repetitively transmit a 64 byte  
(last two bytes are a fixed CR/LF) string so the  
receiving terminal in a path can verify its  
continued connection to the intended  
transmitter.  
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Chapter 3. Configuration  
VT/Port Alarms  
Alarm  
Description  
LOS  
(T1/E1 Loss of Signal)  
The unit has lost the receive signal on a T1/E1.  
CAIS  
LAIS  
XCV  
(Carrier Side AIS)  
The T1 is receiving all ones from the STS side  
of the network.  
(Loop Side AIS)  
The T1 is receiving all ones from the DSX-1  
interface.  
(T1/E1 Excessive Code Violations)  
The controller card is receiving excessive code  
violations, exceeding the threshold set by the  
user (see XCV Threshold on page 3-12).  
VT-LOP  
(VT Path Loss of Pointer)  
A VT LOP defect is declared when either a valid  
pointer is not detected in eight consecutive VT  
superframes, or when eight consecutive VT  
superframes are detected with the NDF set to  
“1001” without a valid concatenation indicator. A  
VT LOP failure is declared when the VT LOP  
defect persists for 2.5 +/- 0.5 seconds.  
VT-AIS  
(VT Path Alarm Indication Signal)  
The unit is receiving a VT path alarm indication  
signal. VT-Path AIS is specified as all ones in  
bytes V1, V2, V3, and V4, as well as all ones in  
the entire VT synchronous payload envelope. A  
VT-Path AIS failure is declared when the  
VT-Path AIS defect persists for 2.5 +/- 0.5  
seconds.  
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Chapter 3. Configuration  
Alarm  
Description  
VT-RFI  
(VT Path Remote Failure Indication)  
The unit is receiving a VT path remote failure  
indication. VT-RFI is declared when the  
incoming VT path remote defect indication (VT-  
RDI, “1” in bit 4 of the VT-Path Overhead byte  
(V5) in five contiguous frames) lasts for  
2.5 +/- 0.5 seconds.  
VT-SLM  
VT-UEQ  
(VT Path Signal Label Mismatch)  
A received signal label is mismatched if it does  
not equal the locally provisioned value or the  
value “equipped non-specific”.  
(VT Path Unequipped)  
The VT path is not provisioned. Byte V5 of the  
STS path overhead is set to zero.  
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Chapter 3. Configuration  
System Alarms  
Alarm  
Description  
Protection Switching  
Card Failure  
A controller card has failed. This is a critical  
alarm only when the back-up card is not  
installed or is not working properly.  
Protection  
Switch  
All data has been routed from the primary card  
to the stand-by card.  
Communication Communication between controller cards A and  
Fail  
B has failed.  
System Timing  
Clock Status  
When enabled, an abnormal clock status  
condition will cause the CRITICAL relay to be  
thrown.The alarm will remain active until the  
condition clears or the alarm is acknowledged  
by the user.  
Clock Source  
Change  
When enabled, a change in the clock source will  
cause the NON-CRITICAL relay to be thrown.  
The alarm will remain active until the condition  
clears or the alarm is acknowledged by the user.  
PRI EXT Clock When enabled, a fault condition (LOS/AIS or  
Status  
FAIL) on the PRImary or SEConday external  
clock will cause the NON-CRITICAL relay to be  
thrown. The alarm will remain active until the  
condition clears or the alarm is acknowledged  
by the user.  
SEC EXT Clock When enabled, a fault condition (LOS/AIS or  
Status  
FAIL) on the PRImary or SEConday external  
clock will cause the NON-CRITICAL relay to be  
thrown. The alarm will remain active until the  
condition clears or the alarm is acknowledged  
by the user.  
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Chapter 3. Configuration  
Alarm  
Description  
Activity Loss  
Status  
When enabled, the CRITICAL relay will be  
thrown if the Activity Loss Status indicates the  
failure of an internal clock. The alarm will remain  
active until the condition clears or the alarm is  
acknowledged by the user.  
Power Supply Alarms  
Alarm  
Description  
Malfunction  
Power supply card is no longer working. The  
unit has switched to the backup power supply or  
battery backup.  
Power Low  
Power Fail  
Power supply’s output level is abnormally low.  
Power supply card’s input power is lost.  
Bat. Backup  
Active  
Battery charger has lost its AC source and is  
now running off the battery backup.  
Battery Low  
Battery backup has reached a critical energy  
point at which it may be unable to supply the unit  
with sufficient power to maintain operation.  
Temperature  
High  
Power supply card temperature is above  
normal.  
Temperature  
Critical  
Power supply card temperature is so high that it  
may suffer damage.  
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Chapter 3. Configuration  
SNMP Management Options  
Trap IP Addresses  
Enter up to five IP addresses of SNMP managers to which the  
MX2800 STS-1 sends traps.  
Trap Generation  
Use this menu (see Figure 3-12) to designate which error conditions  
will cause the unit to send trap messages.  
Figure 3-12. Trap Generation Menu  
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Chapter 3. Configuration  
STS-1 Active Alarm Traps  
Trap  
If enabled, the unit issues a trap when...  
LOS  
(Loss of Signal)  
The controller card has lost the network receive  
signal.  
LOF  
(Loss of Framing)  
The controller card detects a loss of framing  
from the network.  
LOMF  
AIS-L  
(Loss of Multiframe)  
The controller card detects loss of H4  
multiframe from the network.  
(Line Alarm Indication Signal)  
The controller card is receiving a line alarm  
indication signal. Line AIS defect is detected as  
a "111" pattern in bits 6, 7, and 8 of the K2 byte  
in five consecutive frames.  
AIS-P  
RFI-L  
(Path Alarm Indication Signal)  
The controller card is receiving a path alarm  
indication signal. AIS-P is defined as all ones in  
bytes H1, H2, and H3 as well as all ones in the  
entire STS synchronous payload envelope.  
(Line Remote Failure Indication)  
The controller card is receiving a line remote  
failure indication. RFI-L is declared when the  
incoming line remote defect indication (RDI-L,  
"110" pattern in bits 6,7, and 8 of the K2 line  
overhead byte) last for 2.5 +/- 0.5 seconds.  
RFI-P  
(Path Remote Failure Indication)  
The controller card is receiving a path remote  
failure indication. RFI-P is declared when the  
incoming path remote defect indication (RDI-P,  
"1" in bit 5 of the G1 path overhead byte for 5  
contiguous frames) last for 2.5 +/- 0.5 seconds.  
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Chapter 3. Configuration  
Trap  
If enabled, the unit issues a trap when...  
UEQ-P  
(Path Unequipped)  
The controller card detects that the path is  
unequipped. The path is unequipped if it is not  
provisioned. Byte C2 of the STS path overhead  
is set to zero.  
SLM-P  
(Path Signal Label Mismatch)  
The controller card is detecting a signal label  
mismatch. A received signal label is  
mismatched if it does not equal the locally  
provisioned value or the value "equipped non-  
specific".  
TX LOS  
XCV  
(Transmit Loss of Signal)  
The controller card's transmitter has failed.  
(Excessive Code Violations)  
The controller is receiving excessive code  
violations exceeding the threshold set the user  
(see XCV Threshold on page 3-12).  
In Test  
The STS-1 is going in test (applies to the Active  
controller card only).  
JTRACE  
(STS receive path trace)  
The controller card has detected a change in the  
receive path trace message. The message is  
received in the J1 path overhead byte. This byte  
is used to repetitively transmit a 64 byte (last two  
bytes are a fixed CR/LF) string so the receiving  
terminal in a path can verify its continued  
connection to the intended transmitter.  
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Chapter 3. Configuration  
STS-1 Standby Alarm Traps  
Trap  
If enabled, the unit issues a trap when...  
LOS  
(Loss of Signal)  
The controller card has lost the network receive  
signal.  
LOF  
(Loss of Framing)  
The controller card detects a loss of framing  
from the network.  
LOMF  
AIS-L  
(Loss of Multiframe)  
The controller card detects loss of H4  
multiframe from the network.  
(Line Alarm Indication Signal)  
The controller card is receiving a line alarm  
indication signal. Line AIS defect is detected as  
a "111" pattern in bits 6, 7, and 8 of the K2 byte  
in five consecutive frames.  
AIS-P  
(Path Alarm Indication Signal)  
The controller card is receiving a path alarm  
indication signal. AIS-P is defined as all ones in  
bytes H1, H2, and H3 as well as all ones in the  
entire STS synchronous payload envelope.  
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Chapter 3. Configuration  
Trap  
If enabled, the unit issues a trap when...  
RFI-L  
(Line Remote Failure Indication)  
The controller card is receiving a line remote  
failure indication. RFI-L is declared when the  
incoming line remote defect indication (RDI-L,  
"110" pattern in bits 6,7, and 8 of the K2 line  
overhead byte) last for 2.5 +/- 0.5 seconds.  
RFI-P  
(Path Remote Failure Indication)  
The controller card is receiving a path remote  
failure indication. RFI-P is declared when the  
incoming path remote defect indication (RDI-P,  
"1" in bit 5 of the G1 path overhead byte for 5  
contiguous frames) last for 2.5 +/- 0.5 seconds.  
UEQ-P  
SLM-P  
(Path Unequipped)  
The controller card detects that the path is  
unequipped. The path is unequipped if it is not  
provisioned. Byte C2 of the STS path overhead  
is set to zero.  
(Path Signal Label Mismatch)  
The controller card is detecting a signal label  
mismatch. A received signal label is  
mismatched if it does not equal the locally  
provisioned value or the value "equipped non-  
specific".  
TX LOS  
XCV  
(Transmit Loss of Signal)  
The controller card's transmitter has failed.  
(Excessive Code Violations)  
The controller is receiving excessive code  
violations exceeding the threshold set the user  
(see XCV Threshold on page 3-12).  
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Chapter 3. Configuration  
VT/Port Traps  
Trap  
If enabled, the unit issues a trap when...  
LOS  
(T1/E1 Loss of Signal)  
The unit has lost the receive signal on a T1/E1.  
CAIS  
LAIS  
XCV  
(Carrier Side AIS)  
The T1 is receiving all ones from the STS side  
of the network.  
(Loop Side AIS)  
The T1 is receiving all ones from the DSX-1  
interface.  
(T1/E1 Excessive Code Violations)  
The controller card is receiving excessive code  
violations, exceeding the threshold set by the  
user (see XCV Threshold on page 3-12).  
Failure  
VT-LOP  
(VT Path Loss of Pointer)  
When the unit fails to find a valid VT pointer. A  
VT LOP defect is declared when either a valid  
pointer is not detected in eight consecutive VT  
superframes, or when eight consecutive VT  
superframes are detected with the NDF set to  
"1001" without a valid concatenation indicator. A  
VT LOP failure is declared when the VT LOP  
defect persists for 2.5 +/- 0.5 seconds.  
VT-AIS  
(VT Path Alarm Indication Signal)  
The unit is receiving a VT path alarm indication  
signal. VT-Path AIS is specified as all ones in  
bytes V1, V2, V3, and V4, as well as all ones in  
the entire VT synchronous payload envelope. A  
VT-Path AIS failure is declared when the VT-  
Path AIS defect persists for 2.5 +/- 0.5 seconds.  
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Chapter 3. Configuration  
VT-RFI  
(VT Path Remote Failure Indication)  
The unit is receiving a VT path remote failure  
indication. VT-RFI is declared when the  
incoming VT path remote defect indication (VT-  
RDI, "1" in bit 4 of the VT-Path Overhead byte  
(V5) in five contiguous frames) lasts for 2.5 +/-  
0.5 seconds.  
VT-SLM  
VT-UEQ  
(VT Path Signal Label Mismatch)  
The controller card is detecting a signal label  
mismatch in the VT path. A received signal label  
is mismatched if it does not equal the locally  
provisioned value or the value "equipped non-  
specific".  
(VT Path Unequipped)  
The controller card detects that the VT path is  
unequipped. The VT path is not provisioned.  
Byte V5 of the STS path overhead is set to zero.  
System Traps  
Trap  
If enabled, the unit issues a trap when...  
Protection Switching  
Protection Switch all data has been routed from the primary card  
to the stand-by card.  
Card Removed  
Card Failure  
a controller card has been removed.  
a controller card has failed. This is a critical  
alarm only when the back-up card is not  
installed or is not working properly.  
Communication  
Fail  
communication between controller cards A  
and B has failed.  
Max Switches  
the MAX SWITCH THRESHOLD is reached (see  
Max. Switch Threshold on page 3-6).  
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Chapter 3. Configuration  
Trap  
If enabled, the unit issues a trap when...  
System Timing  
Clock Status  
there is a change in clock status. The clock  
status can be any of the following values:  
NORMAL – clock synchronization is  
operating normally.  
RECOVERING – clock synchronization is in  
the process of recovering from a fault.  
LOSS OF SOURCE – the reference clock  
source has become invalid  
OUT OF RANGE – the clock synchronization  
circuit is unable to track the reference  
source.  
OUT OF LOCK – the clock synchronization  
circuit is unable to lock to the reference  
source.  
Clock Source  
Change  
there is a Clock Source Change event  
indicating that the unit has switched clock  
sources. The values for the clock source  
change alarm are:  
Loop  
PRI Ext  
SEC Ext  
Free-run  
Holdover  
PRI EXT Clock  
Status  
a failure condition is encountered on either the  
PRImary or SECondary clock sources (if  
configured). The possible values for this alarm  
are:  
DISABLED  
NORMAL  
AVAILABLE  
LOS/AIS  
FAIL  
UNAVAILABLE  
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Chapter 3. Configuration  
Trap  
If enabled, the unit issues a trap when...  
SEC EXT Clock  
Status  
a failure condition is encountered on either the  
PRImary or SECondary clock sources (if  
configured). The possible values for this alarm  
are:  
DISABLED  
NORMAL  
AVAILABLE  
LOS/AIS  
FAIL  
UNAVAILABLE  
Activity Loss  
Status  
there is a critical hardware failure in which a  
clock source has become inactive. The  
MX2800 STS-1 continually checks for activity  
on all of its internal clock sources as part of its  
status monitoring. If any clock source fails, the  
corresponding clock source will be displayed  
in the status menu and a TRAP/Syslog  
condition will be generated. If all clocks are  
operating normally, no indication is shown on  
the menu. Again, this condition is only  
encountered during a hard card failure and the  
customer should contact ADTRAN technical  
support if this occurs.  
Power Supply Alarm Traps  
Trap  
If enabled, the unit issues a trap when...  
Card Removed the power supply card has been removed  
Malfunction  
the power supply card is no longer working and  
the unit has switched to the backup power  
supply or battery backup  
Card Failure  
Power Low  
the power supply card has failed  
the power supply’s output level is abnormally  
low  
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Chapter 3. Configuration  
Trap  
If enabled, the unit issues a trap when...  
Bat. Backup  
Active  
Battery charger has lost its AC source and is  
now running off the battery backup  
Battery Low  
the battery backup has reached a critical energy  
point at which it may be unable to supply the unit  
with sufficient power to maintain operation  
Temperature  
High  
the power supply card is getting too hot  
Temperature  
Crit  
the power supply card temperature is so high  
that it may suffer damage  
MIB II Standard Alarm Traps  
Trap  
If enabled, the unit issues a trap when...  
Cold Start  
Link Up  
the unit is first powered up  
the STS-1 is up with no alarms  
the STS-1 is in alarm  
Link Down  
Auth. Failure  
an attempt has been made by an unauthorized  
user to access the unit  
Read Community Name  
Enter the authentication strings used for SNMP management.  
Match the MX2800 STS-1 to the SNMP manager for read  
privileges.  
Write Community Name  
Enter the authentication strings used for SNMP management.  
Match the MX2800 STS-1 to the SNMP manager for write  
privileges.  
Trap Community Name  
Enter the identification string used for trap management. This string  
accompanies all traps transmitted by the MX2800 STS-1.  
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Chapter 3. Configuration  
System Security  
Password  
Set the password required at login (up to 32 characters). The default  
password is adtran (all lower case).  
Terminal Timeout  
Set the amount of time the terminal or Telnet session remains  
inactive before automatically closing the session, requiring the user  
to log in again. The options include DISABLED, 1 MIN., 5 MIN.,  
15 MIN., 60 MIN., or 1 DAY.  
IP Security  
IP Hosts  
Enable or disable the IP SECURITY option. If ENABLED, the unit  
accepts management commands and Telnet sessions from the IP  
addresses entered into the IP HOSTS fields.  
Enter up to 16 IP addresses of management stations from which the  
unit should accept management commands. These addresses are  
only applicable if IP SECURITY is ENABLED (see previous  
paragraph).  
Date & Time  
Enter date and time information. Enter the month, date, and year  
separated by forward slashes (02/23/00). Enter the time in military  
format separated by colons (13:15:25).  
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Chapter 3. Configuration  
Miscellaneous  
Equipment Identification  
These fields allow you to store information that identifies the unit.  
Unit ID  
Provides a user-configurable text string for the name of the  
MX2800 STS-1. This name can help you distinguish between dif-  
ferent installations. You can enter up to 32 alpha-numeric charac-  
ters in this field, including spaces and special characters (such as an  
underbar). This information is locally stored and displayed in the  
upper right-hand corner of the MX2800 STS-1 terminal screens.  
STS-1 J1 Path Trace  
Tx – 62 byte string to be transmitted in the J1 Path Trace (CR/LF  
are automatically appended to the string).  
Rx – 62 byte string received in the J1 Path Trace.  
Syslog Setup  
Selections include TRANSMISSION, HOST IP ADDRESS, SEVERITY  
LEVEL, and HOST FACILITY.  
Transmission  
ENABLE or DISABLE the transmission of log events to the external  
Syslog server. You must first define the host IP address.  
Host IP Address  
Specifies the IP address of the external server that is running the  
Syslog host daemon.  
Severity Level  
Specifies the lowest level of severity that causes messages to be  
logged to the Syslog server. The levels are listed in Table 3-1 on  
page 3-37, in order of decreasing severity. Any message at or above  
a selected severity level will be logged if a transmission is enabled.  
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Chapter 3. Configuration  
Table 3-1. Syslog Severity Levels  
Description  
Level  
Emergency  
Alert  
The system is unusable  
An action must be taken immediately  
Shows critical conditions  
Critical  
Error  
Shows error conditions  
Warning  
Notice  
Info  
Shows warning conditions  
Shows normal, but significant, conditions  
Shows informational messages  
Shows a debug-level message  
Debug  
Host Facility  
Specifies the facility destination of log events. Facilities are located  
on the host and are managed by the Syslog host daemon running on  
either a UNIX machine or a PC. Options include LOCAL 0-7.  
TL1 Account Management  
This menu allows for TL1 account management. Before any TL1  
session can be initiated, the user must be authenticated. This user  
database provides access to the current list of TL1 users and their  
associated passwords and privileges. This information is used  
strictly for TL1 purposes.  
Each row in the menu contains the associated information for a  
particular user. The username must be defined before an associated  
password or privilege can be assigned, and a privilege can only be  
defined after a password is assigned. All passwords are hidden for  
security purposes and are never shown in “clear text” form.  
Usernames and password entries are automatically converted to  
uppercase on entry. A user is prevented from deleting himself when  
editing the database over a TL1 session.  
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Chapter 3. Configuration  
Currently, a user’s privilege can be one of three values: DISABLED,  
GUEST, or ADMIN. A DISABLED account behaves as expected, and  
effectively disables all access while preserving account  
information. A GUEST account allows alarm database access and  
autonomous messages, but no user database access. An ADMIN  
account is a guest account with user database access.  
Any time the MX2800 STS-1 configuration is saved to FLASH, the  
TL1 user database is saved as well. The user database is also saved  
(as required) when any TL1 session is close (i.e., via a TL1  
‘CANC-USER’ request).  
Save on Logout  
Craft baud rate  
ENABLE this function to save the configuration when you logout.  
DISABLE if you do not want to save the configuration.  
Possible baud rate settings for the front panel CRAFT port. Choices  
are: AUTO, 9600, 19200, 38400, and 57600.  
UTILITIES  
The UTILITIES menu (see Figure 3-13) allows you to view MX2800  
STS-1 system information for both controller cards (including self-  
test results), revert to default configuration settings, flash-load a  
new version of software, transfer configuration information to and  
from a TFTP server, and reset the system. Possible results for the  
self-test are listed in the chart following Figure 3-13 on page 3-39.  
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Chapter 3. Configuration  
Figure 3-13. System Utilities Menu  
If the self test results are... Then...  
PASS  
the self-test was successful and the  
unit is ready to use.  
BAD RAM DATA  
contact ADTRAN Technical  
BAD RAM ADDRESS  
BAD CODE CHECKSUM  
BAD BOOT SECTOR  
IOX PROGRAM FAILURE  
AFE PROGRAM FAILURE  
MODEM FAILURE  
Support. See the front section of  
this manual for more information.  
ETHERNET FAILURE  
STS-1 FAILURE  
DSX FAILURE  
CONFIGURATION  
CORRUPT  
select SAVE CONFIGURATION from  
the main CONFIGURATION menu. If  
condition persists, contact ADTRAN  
Technical Support.  
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Chapter 3. Configuration  
Load Default Settings  
Loading the default settings will disable all STS-1 ports.  
Select LOAD DEFAULT SETTINGS from the UTILITIES menu. The  
screen will display !WARNING! Defaulting configuration will disrupt  
traffic on all ports. Select CONFIRM to proceed or press Esc to abort.  
The IP Address, Default Gateway, and subnet mask will not be reset  
when default settings are loaded.  
Update FLASH Software  
Select UPDATE FLASH SOFTWARE from the UTILITIES menu to update  
software using either XMODEM protocol or Trivial File Transfer  
Protocol (TFTP).  
Update Via XMODEM  
Select UPDATE VIA XMODEM from the UPDATE FLASH SOFTWARE  
menu; then select 1-START to begin the transfer. Once you select  
1-START from this menu, start the XMODEM transfer from your  
terminal menu program (the XMODEM utility is available under  
most terminal programs). If you wish to cancel a transfer in  
progress, press Ctrl-X three times.  
This function is available only when updating the software through the  
CRAFT port.  
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Chapter 3. Configuration  
Update via TFTP Server  
Select UPDATE VIA TFTP SERVER from the UTILITIES menu. A new  
menu displays, allowing you to enter the IP address and file name  
of the file you want to download to the unit. Once this information  
is entered, select START/STOP TRANSFER.  
Config Transfer  
Select CONFIG TRANSFER from the UTILITIES menu to transfer files to  
and from a TFTP server. The CONFIG TRANSFER option also lets you  
save the MX2800 STS-1 configuration as a backup file, so you can  
use the same configuration with multiple MX2800 STS-1 units.  
Only one configuration transfer session (upload or download) can  
be active at a time.  
Before using CONFIG TRANSFER, the MX2800 STS-1 should have a valid  
IP address, subnet mask, and default gateway (if required), and should  
be connected to an Ethernet network.  
Saving to a TFTP Server  
To save current configuration information to a TFTP server, follow  
the steps listed below.  
1. Set the SERVER IP ADDRESS field to the IP address of the  
machine running the TFTP server program.  
If you are using the ADTRAN TFTP server, the IP address  
displays in the SERVER IP ADDRESS field. For other TFTP  
servers, please refer to the appropriate documentation.  
2. Change the TFTP Server Filename to a unique filename. This  
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Chapter 3. Configuration  
will be the name of the configuration file saved to the remote  
server.  
Some TFTP servers constrain the format of the filename depending on  
the operating system of the server. For example, a TFTP server  
running on a PC under Windows 3.1 may only permit 8.3 format  
filenames (8 characters, period, and three extension characters).  
3. Select SAVE CONFIG REMOTELY.  
Retrieving from a TFTP Server  
To retrieve current configuration information from a TFTP server,  
follow the steps listed below.  
1. Set the SERVER IP ADDRESS field to the IP address of the  
machine running the TFTP server program.  
If you are using the ADTRAN TFTP server, the IP address  
displays in the SERVER IP ADDRESS field. For other TFTP  
servers, please refer to the program’s appropriate  
documentation.  
2. Change the TFTP SERVER FILE NAME to a unique filename.  
Include the complete path. This will be the name of the  
configuration file retrieved from the remote server.  
Configuration changes will not be implemented until all Telnet  
sessions are closed. Loading a new configuration may disrupt  
data traffic.  
3. Select LOAD AND USE CONFIG.  
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Chapter 3. Configuration  
System Reset  
The system must be manually reset after downloading new  
software. When the unit has successfully loaded and programmed  
the new software into its FLASH memory, it will begin uploading  
the code to the stand-by controller. This will be indicated on the  
menu and the STATUS LED on the stand-by card will display solid  
yellow.  
The stand-by card must remain in place until the process is  
complete and the STATUS LED is no longer solid yellow.  
Removing the stand-by card during the uploading process will  
corrupt the software.  
Once the upload is complete, the stand-by card will self-reset and  
begin running the new code. However, the active card does not  
reset automatically. The unit must be reset through the IMMEDIATE  
RESET or SCHEDULED RESET TIME functions.  
SAVE CONFIGURATION  
Commits the current configuration changes to nonvolatile memory.  
If this option is not selected after making changes to the  
configuration, the unit reverts to its previous configuration when  
powered down.  
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Chapter 4  
Status  
View MX2800 STS-1 status information by selecting STATUS from  
the MAIN MENU (see Figure 4-1). The information for the  
STS-1, VT/Port lines, power supplies, and controller cards is  
provided.  
Figure 4-1. Status Menu  
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Chapter 4. Status  
STS-1 STATE  
Displays the current state of the STS-1. The following sections  
describe the STS-1 status fields in detail.  
Card A  
Displays the current condition of the network. Possible conditions  
are listed in the following chart:  
Condition  
Normal  
Alarm  
Description  
The MX2800 STS-1 is ready to pass data.  
The unit is currently receiving an alarm indication.  
Alarm types are discussed in the following  
section, Card A/Card B Alarms.  
In Test  
The unit is currently in test mode. See Chapter 6,  
Diagnostics for information on the test type.  
Card A/Card B Alarms  
This field displays the current alarm condition of the  
MX2800 STS-1. Possible conditions are given in the following  
chart:  
Condition  
Normal  
LOS  
Description  
No alarms are currently being received.  
(Loss of Signal)  
The controller card has lost the network receive  
signal.  
LOF  
LOP  
(Loss of Framing)  
The controller card detects a framing loss from the  
network.  
(Loss of Pointer)  
The controller card is unable to detect a valid  
pointer in the receive signal.  
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Chapter 4. Status  
Condition  
Description  
LOMF  
(Loss of Multiframe)  
The controller card detects loss of H4 multiframe  
from the network.  
AIS-L  
AIS-P  
RFI-L  
(Line Alarm Indication Signal)  
The controller card is receiving a line alarm  
indication signal. The Section Terminating  
Equipment generates AIS-L after detecting LOS  
or LOF.  
(Path Alarm Indication Signal)  
The controller card is receiving a path alarm  
indication signal. AIS-P is defined as all ones in  
bytes H1, H2, and H3 as well as all ones in the  
entire STS synchronous payload envelope.  
(Line Remote Failure Indication)  
The controller card is receiving a line remote  
failure indication. RFI-L is declared when the  
incoming line remote defect indication (RDI-L,  
“110” pattern in bits 6, 7, and 8 of the K2 line  
overhead byte) lasts for 2.5 +/- 0.5 seconds.  
RFI-P  
(Path Remote Failure Indication)  
The controller card is receivinga path remote  
failure indication. RFI-P is declared when the  
incoming path remote defect indication (RDI-P, “1”  
in bit 5 of the G1 path overhead byte for  
contiguous frames) lasts for 2.5 +/- 0.5 seconds.  
SLM-P  
UEQ-P  
(Path Signal Lavel Mismatch)  
The controller card is detecting a signal label  
mismatch. A received signal label is mismatched  
if it does not equal the locally provisioned value or  
the value “equipped non-specific”.  
(Path Unequipped)  
The controller card detects that the path is  
unequipped. The path is unequipped if it is not  
provisioned. Byte C2 of the STS path overhead is  
set to zero.  
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Chapter 4. Status  
Condition  
Description  
XCV  
(Excessive Code Violations)  
The controller is receiving excessive code  
violations exceeding the threshold set by the user  
(see XCV Threshold on page 3-12).  
TLOS  
(Transmit Loss of Signal)  
The contoller card’s transmitter has failed.  
Network Port Mapping  
This entry contains a description of the mapping between network  
ports and controller cards. In a redundant system with circuit  
protection the following is displayed:  
Card A  
Port A  
|
Card B  
Port A  
In a redundant system with network protection the following is  
displayed:  
Card A  
Port A  
|
Card B  
Port B  
OR  
|
Card A  
Port B  
Card B  
Port A  
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Chapter 4. Status  
POWER SUPPLY STATE  
This field indicates which types of power supplies are installed (AC  
or DC) in Card A and Card B and gives their current state.  
Condition  
Normal  
Error  
Description  
The power supply is fully operational.  
The controller card cannot communicate with the  
power supply.  
Power Low  
Power Fail  
Charger Fail  
The power supply output level is abnormally low.  
The power supply input power is lost.  
The battery backup charger has failed or has lost  
its AC connection.  
Battery Low  
Temp High  
The battery backup has reached a critical energy  
point at which it may be unable to supply the unit  
with sufficient power to maintain operation.  
The power supply card temperature is abnormally  
high.  
Temp Critical The power supply card temperature is so high that  
it will soon shut off completely.  
SYSTEM STATE  
The system state fields display information regarding the two  
controller cards. The following sections describe these fields in  
detail.  
Alarm  
This field displays what type (if any) of system alarm is currently  
recognized by the unit. The condition is displayed until it clears up,  
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Chapter 4. Status  
with the exception of the SWITCHED condition (which is cleared  
manually).  
To clear the SWITCHED condition, select ACKNOWLEDGE ALARMS  
(ACO) or push the ACO button on the front panel. See the sections  
ACO Buttons on page 2-12 and Acknowledge Alarms (ACO) on  
page 4-12 for more information. Possible alarm types are listed in  
the following chart:  
Condition  
Description  
Supply Failure A power supply card has failed.  
Card Failure  
A controller card is not passing data.  
Excessive  
Switches  
The MAX SWITCHING THRESHOLD has been  
exceeded. See Max. Switch Threshold on page  
3-6.  
Switched  
A card switch has occurred.  
Card A/Card B  
These fields display the current state of the two controller cards.  
Possible states for the controller cards are listed in the following  
chart:  
Condition  
Not Installed  
Stand By  
Description  
No controller card is installed in this slot.  
The controller card is ready to pass data, but is  
currently acting as a backup card.  
Active  
The controller card is acting as the primary card.  
Failure  
The controller card has failed and needs to be  
replaced.  
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Chapter 4. Status  
Protection  
This field lists the type of protection mode currently active.  
Possible states are listed in the following chart:  
Condition  
Description  
Network  
Both controller cards are installed and everything is  
functioning properly. The unit is in full Network  
Protection Mode.  
Circuit  
None  
Unit is in Circuit Protection Mode and everything is  
functioning properly,  
or  
unit is in Network Protection Mode and a failure on  
the network has occurred.  
or  
the unit is in Circuit Protection Mode and the  
secondary card has failed.  
For more information on the different types of Protection Modes, see  
Chapter 7, Circuit and Network Redundancy.  
Card Comm  
This field displays the current state of the communication link  
between the two controller cards. OK indicates that the cards are  
communicating; FAILURE indicates that the cards are not able to  
communicate with each other. If there is only one card installed,  
NON-REDUNDANT is displayed.  
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Chapter 4. Status  
TIMING STATUS  
The following entries describe the state of the transmit timing  
subsystem, including the status of the selected reference clock(s),  
availability and status of the external clock sources, timing  
acquisition status, and internal clock failures.  
Clock Status  
This entry describes the condition of the clock synchronization  
circuitry. The clock status can be any of the following values:  
NORMAL – clock synchronization is operating normally.  
RECOVERING – clock synchronization is in the process of  
recovering from a fault.  
LOSS OF SOURCE – the reference clock source has become  
invalid  
OUT OF RANGE – the clock synchronization circuit is unable to  
track the reference source.  
OUT OF LOCK – the clock synchronization circuit is unable to  
lock to the reference source.  
Current Source  
Indicates the source of the clock. The values for the clock source  
are:  
LOOP – indicates that timing is currently being derived from the  
STS-1 receive signal.  
PRI EXT – indicates that timing is currently being derived from  
the source assigned to the primary external clock source.  
SEC EXT – indicates that timing is currently being derived from  
the source assigned to the secondary external clock source.  
FREE-RUN – indicates that transmit timing is currently being  
derived from an internal +/-20 ppm (Stratum 4) SONET  
minimum clock source.  
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Chapter 4. Status  
HOLDOVER – indicates that a failure in the selected clock sourc  
has occurred and the unit has entered hold-over mode. In this  
mode, the last known good clock reference frequency will be  
held within 4.1 ppm for a minimum of 24 hours.  
PRI Ext. Clock  
The PRI EXT Clock alarms indicate when a failure condition is  
encountered on the PRImary clock source (if configured). The  
possible values for this alarm are:  
DISABLED – indicates that the selected clock has been disabled  
by the user and will not be used.  
NORMAL – indicates that the clock source is currently being  
used a the timing reference.  
AVAILABLE – indicates that the clock source is available to be  
used as a timing source if a failure of the current source occurs.  
LOS/AIS – indicates that the clock source is not valid due to an  
LOS or AIS condition.  
FAIL – indicates that an internal hardware failure on the unit  
prevents the clock source from being used.  
UNAVAILABLE – indicates that the user has specified a T1/E1  
port to be used as an external clock source, but the port has not  
been enabled.  
SEC Ext. Clock  
The SEC EXT Clock alarms indicate when a failure condition is  
encountered on the SECondary clock source (if configured). The  
possible values for this alarm are:  
DISABLED – indicates that the selected clock has been disabled  
by the user and will not be used.  
NORMAL – indicates that the clock source is currently being  
used a the timing reference.  
AVAILABLE – indicates that the clock source is available to be  
used as a timing source if a failure of the current source occurs.  
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Chapter 4. Status  
LOS/AIS – indicates that the clock source is not valid due to an  
LOS or AIS condition.  
FAIL – indicates that an internal hardware failure on the unit  
prevents the clock source from being used.  
UNAVAILABLE – indicates that the user has specified a T1/E1  
port to be used as an external clock source, but the port has not  
been enabled.  
VT/PORT STATE  
This field displays the current alarm condition of the VTs/ports.  
Possible conditions are given in the following chart:  
VT/Port State  
Alarm  
OFF  
OK  
Description  
VT in unequipped and T1/E1 port is disabled.  
VT/Port is in a normal state.  
LOS  
(T1/E1 Loss of Signal)  
The unit has lost the receive signal on a T1/E1.  
CAIS  
LAIS  
XCV  
(Carrier Side AIS)  
The T1 is receiving all ones from the STS side  
of the network.  
(Loop Side AIS)  
The T1 is receiving all ones from the DSX-1  
interface.  
(T1/E1 Excessive Code Violations)  
The controller card is receiving excessive code  
violations, exceeding the threshold set by the  
user (see XCV Threshold on page 3-12).  
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Chapter 4. Status  
Alarm  
Description (cont’d)  
VT-LOP  
(VT Path Loss of Pointer)  
A VT LOP defect is declared when either a valid  
pointer is not detected in eight consecutive VT  
superframes, or when eight consecutive VT  
superframes are detected with the NDF set to  
“1001” without a valid concantenation indicator.  
A VT LOP failure is declared when the VT LOP  
defect persists for 2.5 +/- 0.5 seconds.  
VT-AIS  
(VT Path Alarm Indication Signal)  
The unit is receiving a VT path alarm indication  
signal. VT-Path AIS is specified as all ones in  
bytes V1, V2, V3, and V4, as well as all ones in  
the entire VT synchronous payload envelope. A  
VT-Path AIS failure is declared when the  
VT-Path AIS defect persists for 2.5 +/- 0.5  
seconds.  
VT-RFI  
(VT Path Remote Failure Indication)  
The unit is receiving a VT path remote failure  
indication. VT-RFI is declared when the  
incoming VT path remote defect indication (VT-  
RDI, “1” in bit 4 of the VT-Path Overhead byte  
(V5) in five contiguous frames) lasts for  
2.5 +/- 0.5 seconds.  
VT-SLM  
(VT Path Signal Label Mismatch)  
A received signal label is mismatched if it does  
not equal the locally provisioned value or the  
value “equipped non-specific”.  
VT-UEQ  
TST  
(VT Path Unequipped)  
The VT path is not provisioned. Byte V5 of the  
STS path overhead is set to zero.  
The VT/Port is in test mode.  
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Chapter 4. Status  
ACKNOWLEDGE ALARMS (ACO)  
This selection allows you to remotely turn off an active alarm. It is  
the software equivalent of the ACO button (described in the section  
ACO Buttons on page 2-12).  
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Chapter 5  
Statistics  
Select STATISTICS from the MAIN MENU to access STATISTICS menus  
(see Figure 5-1). Alarm information and performance parameters  
are available for both the near and far ends of the network.  
Information is also given for the individual VTs and  
T1/E1 lines.  
Statistical information is given in screens based on the following  
time periods: the current 15-minute interval, a 24-hour history  
(divided into 96 15-minute intervals), and the totals for the previous  
24 hours. Also, a cumulative alarm count is given. This count  
continues indefinitely until reset by the user.  
Figure 5-1. Statistics Menu  
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5-1  
         
Chapter 5. Statistics  
STS-1 STATISTICS  
This menu provides submenus for alarm history and performance  
parameters (see Figure 5-2).  
Figure 5-2. Local STS-1 Statistics Menu  
24 Hour Alarm History  
The MX2800 STS-1 keeps track of alarms for both the near and far  
ends of the network. You can view alarm history information in one  
of the three time period selections, or view a cumulative alarm  
count. Information in these fields is for the given time period since  
the last reset. The cumulative alarm count continues indefinitely  
until CLEAR ALL STS-1 ALARM COUNTS is selected. See Figure 5-3  
and Figure 5-4 on page 5-5 for examples of alarm screens.  
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Chapter 5. Statistics  
The following alarm counts are provided in this menu:  
Condition  
Description  
LOS  
(Loss of Signal)  
The unit has lost the network receive signal.  
LOF  
LOP  
(Loss of Framing)  
The unit detects a framing loss from the network.  
(Loss of Pointer)  
The unit is unable to detect a valid pointer in the  
receive signal.  
LOMF  
AIS-L  
(Loss of Multiframe)  
The unit detects loss of H4 multiframe from the  
network.  
(Line Alarm Indication Signal)  
The unit is receiving a line alarm indication signal.  
The Section Terminating Equipment generates  
AIS-L after detecting LOS or LOF.  
AIS-P  
RFI-L  
(Path Alarm Indication Signal)  
The unit is receiving a path alarm indication  
signal. AIS-P is defined as all ones in bytes H1,  
H2, and H3 as well as all ones in the entire STS  
synchronous payload envelope.  
(Line Remote Failure Indication)  
The unit is receiving a line remote failure  
indication. RFI-L is declared when the incoming  
line remote defect indication (RDI-L, “110” pattern  
in bits 6, 7, and 8 of the K2 line overhead byte)  
lasts for 2.5 +/- 0.5 seconds.  
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Condition  
Description  
RFI-P  
(Path Remote Failure Indication)  
The unit is receiving a path remote failure  
indication. RFI-P is declared when the incoming  
path remote defect indication (RDI-P, “1” in bit 5 of  
the G1 path overhead byte for contiguous frames)  
lasts for 2.5 +/- 0.5 seconds.  
SLM-P  
UEQ-P  
(Path Signal Level Mismatch)  
A received signal label is mismatched if it does not  
equal the locally provisioned value or the value  
“equipped non-specific”.  
(Path Unequipped)  
The path is unequipped if it is not provisioned.  
Byte C2 of the STS path overhead is set to zero.  
The count given reflects the number of times the alarm or state has  
occurred (rather than the number of seconds the alarm was active).  
Figure 5-3. Local STS-1 Current Alarm Count Screen  
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Chapter 5. Statistics  
Figure 5-4. Local STS-1 24-Hour Alarm History Screen  
When a > or < symbol appears in an upper corner of the screen, you  
can use the arrow keys on your keyboard to scroll right or left to view  
additional information. See the upper right-hand corner of Figure 5-4.  
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Chapter 5. Statistics  
Performance Parameters  
View performance parameter information for the network in one of  
the three time period selections. Information in these fields is for  
the given time period since the last reset. When viewing the  
24-hour history statistics screen, use the left and right arrow keys to  
scroll through all 96 15-minute intervals. See Figure 5-5, Figure  
5-6, and Figure 5-7 on page 5-7 for examples of the performance  
parameter screens.  
Descriptions of the fields in each screen follows.  
Figure 5-5. Local STS-1 Performance Parameters (Current 15 Minutes)  
Figure 5-6. Local STS-1 Performance Parameters (24 Hour History)  
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Figure 5-7. Local STS-1 Performance Parameters (24 Hour Totals)  
Interval starting at:  
Time that the 15-minute interval began. This field is displayed only  
in the 24-hour history screen which gives information for the  
previous 24 hours divided into 15-minute intervals (shown in  
Figure 5-6 on page 5-6).  
Severely Errored Framing Seconds (SEFS)  
Number of seconds that contain one or more SEF events. This  
counter is only counted at the Section layer.  
Section Coding Violations (SCV)  
Number of coding violations encountered at the Section layer.  
Line Coding Violations (LCV)  
Number of coding violations encountered at the Line layer.  
Path Coding Violations (PCV)  
Number of coding violations encountered at the Path layer.  
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Chapter 5. Statistics  
Section Errored Seconds (SES)  
Number of seconds with one or more coding violations or one or  
more incoming defects (e.g., SEF, LOS, AIS, LOP) at the Section  
layer.  
Line Errored Seconds (LES)  
Number of seconds with one or more coding violations or one or  
more incoming defects (e.g., SEF, LOS, AIS, LOP) at the Line  
layer.  
Path Errored Seconds (PES)  
Number of seconds with one or more coding violations or one or  
more incoming defects (e.g., SEF, LOS, AIS, LOP) at the Path  
layer.  
Section Severely Errored Seconds (SSES)  
Number of seconds with X or more coding violations at the Section  
layer, or a second during which at least one or more incoming  
defects at the Section layer has occurred. Values of X vary  
depending on the line rate and the Bit Error Rate.  
Line Severely Errored Seconds (LSES)  
Number of seconds with X or more coding violations at the Line  
layer, or a second during which at least one or more incoming  
defects at the Line layer has occurred. Values of X vary depending  
on the line rate and the Bit Error Rate.  
Path Severely Errored Seconds (PSES)  
Number of seconds with X or more coding violations at the Path  
layer, or a second during which at least one or more incoming  
defects at the Path layer has occurred. Values of X vary depending  
on the line rate and the Bit Error Rate.  
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Chapter 5. Statistics  
Line Unavailable Seconds (LUAS)  
Time in seconds that the Line layer has been unavailable for data  
delivery.  
Path Unavailable Seconds (PUAS)  
Time in seconds that the Path layer has been unavailable for data  
delivery.  
Clear All Local STS-1 Statistics  
Clears all current information. This selection affects all statistical  
information (not just the displayed screen). When viewing the  
24-hour history screen, press the down arrow key to access this  
selection.  
LOCAL VT STATISTICS  
This menu provides submenus for alarm history and performance  
parameters (see Figure 5-8).  
Figure 5-8. Local VT Statistics  
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Chapter 5. Statistics  
Alarm History  
The MX2800 STS-1 keeps track of alarms for both the near and far  
ends of the network. View alarm history information in one of the  
three time period selections, or view a cumulative alarm count.  
Information in these fields is for the given time period since the last  
reset. The cumulative alarm count continues indefinitely until  
CLEAR ALL VT ALARM COUNTS is selected. See Figure 5-9 and  
Figure 5-10 on page 5-12 for examples of alarm screens.  
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Chapter 5. Statistics  
The following alarm counts are provided in this menu:  
Condition  
Description  
LOP  
The number of times the unit has failed to find a  
valid VT pointer.  
AIS  
The number of times the unit has received a path  
alarm indication signal. VT-Path AIS is defined as  
all ones in bytes V1, V2, V3, and V4 as well as all  
ones in the entire VT synchronous payload  
envelope. A VT-Path AIS failure is declared when  
the VT-Path AIS defect persists for 2.5 +/- 0.5  
seconds.  
RDI  
RFI  
Number of times the unit has received a VT path  
remote defect indication. VT-RFI is declared  
when the incoming VT path RDI lasts for 2.5 +/-  
0.5 seconds.  
Number of times the unit has received a VT path  
remote failure indication. VT-RFI is declared  
when the incoming VT path RFI lasts for 2.5 +/-  
0.5 seconds.  
SLM  
Number of times the unit has detected a SLM  
alarm condition from the VT path. A received  
signal label is mismatched if it does not equal the  
locally provisioned value or the value “equipped  
non-specific”.  
UEQ  
Number of times the unit has detected a UEQ  
alarm condition from the VT path. The VT path is  
not provisioned. Byte V5 of the STS path  
overhead is set to zero.  
The count given reflects the number of times the alarm or state has  
occurred (rather than the number of seconds the alarm was active).  
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Chapter 5. Statistics  
Figure 5-9. Local VT-LOP Alarm Count Screen (Current 15 Minutes)  
Figure 5-10. Local VT-LOP Alarm Count Screen (24 Hour History)  
Performance Parameters  
View performance parameter information for the network in one of  
the three time period selections. Information in these fields is for  
the given time period since the last reset. When viewing the  
24-hour history statistics screen, use the left and right arrow keys to  
scroll through all 96 15-minute intervals. See Figure 5-11 and  
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Chapter 5. Statistics  
Figure 5-12 on page 5-14 for examples of the VT performance  
parameter screens.  
Condition  
Description  
CV  
(Coding Violation)  
The number of coding violations encountered at  
the VT layer.  
ES  
(Errored Seconds)  
Number of seconds with one or more coding  
violations or one or more incoming defects (e.g.,  
AIS, LOP) at the VT layer.  
SES  
(Severely Errored Seconds)  
Number of seconds with X or more coding  
violations are the VT layer, or a second during  
which at least one or more incoming defects at the  
VT layer has occurred. Values of X vary  
depending on the line rate and the Bit Error Rate.  
UAS  
(Unavailable Seconds)  
Time in seconds that the VT layer has been  
unavailable for data delivery.  
The count given reflects the number of times the alarm or state has  
occurred (rather than the number of seconds the alarm was active).  
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Chapter 5. Statistics  
Figure 5-11. Local VT-CV Performance Parameters (Current 15 Minutes)  
Figure 5-12. Local VT-CV Performance Parameters (24 Hour History)  
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LOCAL PORT STATISTICS  
The MX2800 STS-1 keeps track of LOSS OF SIGNAL ALARMS,  
BIPOLAR VIOLATION COUNTS, AIS LOOP ALARMS, and AIS CARRIER  
ALARMS for each of the Ports (T1s/E1s) (see Figure 5-13). View this  
information in one of the three time period selections, or view a  
cumulative alarm count. Information in these fields is for the given  
time period (if any) since the last reset. The cumulative alarm count  
continues indefinitely until CLEAR ALL PORT ALARM COUNTS  
(located in each field) is selected.  
Figure 5-13. Local Port Statistics Menu  
Loss of Signal Alarms  
The number of times the unit has lost the receive signal on a T1/E1.  
Bipolar Violation Counts  
The number of times the unit has received a bipolar violation.  
AIS Loop Alarms  
The number of times the T1 has received all ones from the DSX-1  
interface.  
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Chapter 5. Statistics  
AIS Carrier Alarms  
The number of times the T1 has received all ones from the STS side  
of the network.  
FAR END STS-1 STATISTICS  
This menu provides a submenu performance parameters (see Figure  
5-14).  
Figure 5-14. Far End STS-1 Statistics Menu  
Performance Parameters  
View performance parameter information for the network in one of  
the three time period selections. Information in these fields is for  
the given time period since the last reset. When viewing the  
24-hour history statistics screen, use the left and right arrow keys to  
scroll through all 96 15-minute intervals. See Figure 5-15 and  
Figure 5-16 on page 5-17, and Figure 5-17 on page 5-18 for  
examples of the performance parameter screens.  
Descriptions of the individual performance parameters fields follow  
the screens.  
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Chapter 5. Statistics  
Figure 5-15. Far End STS-1 Performance Parameters (Current 15 Minutes)  
Figure 5-16. Far End STS-1 Performance Parameters (24 Hour History)  
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Chapter 5. Statistics  
Figure 5-17. Far End STS-1 Performance Parameters (24 Hour Totals)  
Interval starting at:  
Time that the 15-minute interval began. This field is displayed only  
in the 24-hour history screen which gives information for the  
previous 24 hours divided into 15-minute intervals (shown in  
Figure 5-6 on page 5-6).  
Severely Errored Framing Seconds (SEFS)  
Number of seconds that contain one or more SEF events. This  
counter is only counted at the Section layer.  
Section Coding Violations (SCV)  
Number of coding violations encountered at the Section layer.  
Line Coding Violations (LCV)  
Number of coding violations encountered at the Line layer.  
Path Coding Violations (PCV)  
Number of coding violations encountered at the Path layer.  
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Chapter 5. Statistics  
Section Errored Seconds (SES)  
Number of seconds with one or more coding violations or one or  
more incoming defects (e.g., SEF, LOS, AIS, LOP) at the Section  
layer.  
Line Errored Seconds (LES)  
Number of seconds with one or more coding violations or one or  
more incoming defects (e.g., SEF, LOS, AIS, LOP) at the Line  
layer.  
Path Errored Seconds (PES)  
Number of seconds with one or more coding violations or one or  
more incoming defects (e.g., SEF, LOS, AIS, LOP) at the Path  
layer.  
Section Severely Errored Seconds (SSES)  
Number of seconds with X or more coding violations at the Section  
layer, or a second during which at least one or more incoming  
defects at the Section layer has occurred. Values of X vary  
depending on the line rate and the Bit Error Rate.  
Line Severely Errored Seconds (LSES)  
Number of seconds with X or more coding violations at the Line  
layer, or a second during which at least one or more incoming  
defects at the Line layer has occurred. Values of X vary depending  
on the line rate and the Bit Error Rate.  
Path Severely Errored Seconds (PSES)  
Number of seconds with X or more coding violations at the Path  
layer, or a second during which at least one or more incoming  
defects at the Path layer has occurred. Values of X vary depending  
on the line rate and the Bit Error Rate.  
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Chapter 5. Statistics  
Line Unavailable Seconds (LUAS)  
Time in seconds that the Line layer has been unavailable for data  
delivery.  
Path Unavailable Seconds (PUAS)  
Time in seconds that the Path layer has been unavailable for data  
delivery.  
Clear All Far End STS-1 Statistics  
Clears all current information. This selection affects all statistical  
information (not just the displayed screen). When viewing the  
24-hour history screen, press the down arrow key to access this  
selection.  
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Chapter 6  
Diagnostics  
The DIAGNOSTICS menu shown in Figure 6-1 allows you to initiate  
loopback tests from the MX2800 STS-1. From this menu, select  
VT/PORT or STS-1. Once this selection is made, a second menu  
displays the types of tests available.  
Descriptions and testing diagrams of the loopback tests are  
provided in the following portions of this chapter:  
VT/Port Loopbacks on page 6-2  
STS-1 Loopbacks on page 6-8  
Figure 6-1. Diagnostics Menu  
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Chapter 6. Diagnostics  
VT/PORT LOOPBACKS  
After you select the number that corresponds with the line you want  
to test, the menu in Figure 6-2 appears. The number selected  
(1-28) refers to the VT number. The Port (T1/E1) that will be tested  
is the port mapped to the selected VT number. The sections  
following the figure provide descriptions and illustrations of the  
testing options. Select 1-DATA MODE to end a test in progress.  
Figure 6-2. VT/Port Diagnostics Menu  
Tributary  
A TRIBUTARY loopback loops the selected VT/Port back to the  
network (STS-1). The T1/E1 is looped back through the STS-1  
mapper. During this loopback, the corresponding DSX-1/E1 input  
is overwritten by the outgoing DSX-1/E1 signal. See Figure 6-3 on  
page 6-3 for an illustration of this test.  
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Chapter 6. Diagnostics  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-3. Tributary Loopback Test  
Analog Network  
An ANALOG NETWORK loopback test loops the selected T1/E1 back  
to the network (STS-1). The T1/E1 is completely de-multiplexed,  
looped back at the T1/E1 line interface unit (LIU) through the LIU  
drivers and receivers, and multiplexed back onto the STS-1  
network stream. See Figure 6-4 for an illustration of this test.  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-4. Analog Network Loopback  
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Chapter 6. Diagnostics  
Digital Line/Net  
A DIGITAL LINE/NET loopback performs a loopback of the selected  
T1/E1 in both the network and local loop directions. Both  
loopbacks occur at the T1/E1 LIU. The network side loopback  
occurs deep into the LIU through the receiver, receive equalizer,  
transmit jitter attenuator, and finally, through the T1/E1 transmit  
drivers. See Figure 6-5 for an illustration of this test.  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-5. Digital Line/Network Loopback  
Codec Line/Net  
A CODEC LINE/NET loopback performs a loopback of the selected  
T1/E1 in both the network and local loop directions. Both  
loopbacks occur at the T1/E1 codec. Both the network and the local  
loop side of the loopback are executed at the edge of the codec,  
completely testing the STS-1 mapper and the T1/E1 LIU. See  
Figure 6-6 for an illustration of this test.  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-6. Codec Loopback  
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Chapter 6. Diagnostics  
CSU Loopback  
A CSU LOOPBACK enables the MX2800 STS-1 to generate a CSU  
loop-up pattern (001001…) towards the T1 CSU attached to the  
selected T1 line for six seconds. After six seconds have elapsed, the  
pattern will cease and incoming network traffic will be passed  
through to the CSU device. If the CSU device responded to the  
CSU loop-up pattern, it will return all data back towards the  
network. A loop-down pattern (0000100001….) will be generated  
towards the CSU for six seconds when DATA MODE is selected.  
When in CSU LOOPBACK, only the DATA MODE for the T1 under test  
may be selected. Selecting any other option will result in an error  
message being displayed.  
CSU Loopback w/BERT  
A CSU LOOPBACK W/BERT enables the MX2800 STS-1 to test the  
local T1 loop to the CSU using the standard QRSS pseudo-random  
bit sequence. When CSU LOOPBACK W/BERT is selected, the  
MX2800 STS-1 will initiate a CSU loopback towards the CSU  
attached to the selected T1 line similar to the CSU LOOPBACK test  
above. Six seconds after starting the CSU loop-up pattern, the  
MX2800 STS-1 will cease sending the CSU loop-up pattern and  
begin sending an unframed 511 pattern towards the CSU. If the  
CSU device responded to the CSU loop-up pattern, the  
MX2800 STS-1 will check the incoming pattern for errors.  
Additional menu items will appear to show the state of pattern  
synchronization, error count, and a clear error count option (see  
Figure 6-7 on page 6-6). Selecting DATA MODE will cease the  
transmission of the QRSS pattern and start transmission of a loop-  
down pattern as previously described.  
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Chapter 6. Diagnostics  
Only one T1 port may engage a CSU LOOPBACK, CSU LOOPBACK  
W/BERT, or a LINE BERT. If a CSU LOOPBACK, CSU LOOPBACK  
W/BERT, or a LINE BERT is already active at the time a new CSU  
LOOPBACK, CSU LOOPBACK W/BERT, or LINE BERT is selected, the  
former test will be terminated and the latter test will be engaged.  
Figure 6-7. Diagnostics Menu with BERT Selected  
VT BERT  
A VT BERT enables the MX2800 STS-1 to perform a “head-to-  
head” BERT test towards the STS-1 network. Selecting VT BERT  
will replace all incoming T1/E1 traffic for the T1/E1 mapped to the  
selected VT with an unframed QRSS pattern towards the network.  
When VT BERT is selected, additional menu items will appear to  
show the state of pattern synchronization, cumulative error count,  
and a clear error count option. Selecting DATA MODE will cease  
QRSS pattern generation and substitution of the incoming data  
stream. See Figure 6-8 on page 6-7 for an illustration of this test.  
When in VT BERT mode, only the DATA MODE option for the  
VT/Port under test may be selected. Selecting any other option will  
cause an error message to be displayed.  
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Chapter 6. Diagnostics  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-8. VT Bert Test  
Line BERT  
A LINE BERT enables the MX2800 STS-1 to perform a “head-to-  
head” BERT test towards the T1/E1 line mapped to the VT selected.  
Selecting LINE BERT will replace all outgoing T1/E1 traffic for the  
T1/E1 mapped to the selected VT with an unframed QRSS pattern.  
When LINE BERT is selected, additional menu items will appear to  
show the state of pattern synchronization, cumulative error count,  
and a clear error count option. Selecting DATA MODE will cease  
QRSS pattern generation and substitution of the incoming data  
stream. See Figure 6-8 for an illustration of this test.  
When in LINE BERT mode, only the DATA MODE option for the  
VT/Port under test may be selected. Selecting any other option will  
result in an error message being displayed.  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-9. Line Bert Test  
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Chapter 6. Diagnostics  
STS-1 LOOPBACKS  
After you select STS-1 LOOPBACK, the menu in Figure 6-10  
appears. The sections following the figure provide descriptions and  
illustrations of the testing options. Select 1=DATA MODE to end a  
test in progress.  
Figure 6-10. STS-1 Diagnostics Menu  
Line Network  
LINE NETWORK performs a loop of the STS-1 back to the network.  
This loopback occurs just prior to the HDB3/B8ZS decoder of the  
LIU; therefore, any coding violations received by the STS-1 will be  
inserted back into the network without modification. See Figure  
6-11 on page 6-9 for an illustration of this text.  
If a LINE NETWORK loopback is active when the MX2800 STS-1 is  
operating in the FREE-RUN timing mode, the timing source for the  
STS-1 is effectively removed from the circuit. Therefore, it is up to  
the test equipment or network to provide STS-1 timing into the  
circuit for the duration of the test.  
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Chapter 6. Diagnostics  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-11. Line Network Test  
Analog Loopback  
An ANALOG LOOPBACK loops the entire STS-1 back to the local  
loop side. The end effect of this test is a loopback of all VT/Ports  
after passing through the STS-1 mapper and the LIU. The incoming  
STS-1 data is ignored and the outgoing STS-1 stream is looped  
back into the “AGC/Receive Equalizer Block” in the LIU. This test  
is illustrated in Figure 6-12.  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-12. Analog Loopback  
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Chapter 6. Diagnostics  
Digital Loopback  
A DIGITAL LOOPBACK loops the entire STS-1 back to the local loop  
side. The end effect of this test is a loopback of all VT/Ports after  
passing through the STS-1 mapper and partially through the LIU.  
The incoming STS-1 data is ignored and the outgoing STS-1 stream  
is substituted in its place just prior to entering the STS-1 encoder  
block of the LIU. This data will be processed through the “Transmit  
Clock Duty Cycle Adjust” PLL and the “HDB3/B3ZS Encoder”  
block. At this point, the data will be looped back to the “HDB3/  
B3ZS Encoder” block. This test is illustrated in Figure 6-13.  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-13. Digital Loopback  
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Chapter 6. Diagnostics  
Metallic Diagnostics  
A METALLIC DIAGNOSTIC loopback test loops the entire STS-1 back  
to the local loop side. The end effect of this test is a loopback of all  
VT/Ports after being fully multiplexed and de-multiplexed to and  
from the STS-1 and passed through both directions of the LIU.  
During this test, the incoming STS-1 is disconnected from the  
STS-1 receiver and the outgoing STS-1 signal is substituted in its  
place. See Figure 6-14 for an illustration of this test.  
CODEC  
T1/E1 LIU  
(1 of 28)  
(1 of 28)  
STS-1  
MAPPER  
STS-1  
LIU  
T1/E1 LIU  
CODEC  
(28 of 28)  
(28 of 28)  
Figure 6-14. Metallic Diagnostics Loopback Test  
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Chapter 6. Diagnostics  
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Chapter 7 Circuit and Network Redundancy  
The MX2800 STS-1 provides backup measures of protection for  
the three possible modes of operation:  
Non-Redundant Mode, which offers no backup protection, is  
described on page 7-2.  
Circuit Failure Recovery Mode, which offers backup protection  
in the event of controller card failure, is described on page 7-3.  
Circuit and Network Failure Recovery Mode, which offers a  
complete backup system for both card and network failure, is  
described on page 7-4.  
The descriptions given include illustrations and suggested  
configuration settings. Please note that the settings may need  
modification based on your network configuration.  
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Chapter 7. Circuit and Network Redundancy  
NON-REDUNDANT MODE  
In Non-Redundant Mode, the MX2800 STS-1 houses only one  
controller card and only one network connection is available. There  
is no failure protection. In the event of a failure, an alarm is initiated  
and the front panel LEDs reflect the condition. See Figure 7-1 for  
an illustration.  
MX2800 STS-1  
Figure 7-1. Non-Redundant Mode  
In this mode, the STS-1 must be connected to the IN and OUT jacks  
for NET A.  
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Chapter 7. Circuit and Network Redundancy  
CIRCUIT FAILURE RECOVERY MODE  
In Circuit Failure Recovery Mode, two controller cards are installed  
and a single STS-1 line is coming in (see Figure 7-2). In this mode,  
the MX2800 STS-1 can continue operating in the event of a  
controller card failure. When both cards are healthy, the primary  
card actively processes data while the secondary card stands by  
ready to take over if the first fails. The secondary card continuously  
monitors the line and remains framed to the incoming signal.  
See Table 7-1 on page 7-4 for a list of this mode’s configuration  
requirements.  
During a card switch, service interruption is experienced on both  
the STS-1 and the DSX-1 connections. However, since the  
secondary controller card remains framed to the incoming signal  
at all times, it is a minimal interruption.  
MX2800 STS-1  
Figure 7-2. Circuit Failure Recovery Mode  
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Chapter 7. Circuit and Network Redundancy  
Table 7-1. Configuration Requirements for Circuit Recovery  
Selection Path  
Recommended Setting  
Config > Network Interface > XCV Threshold  
Config > Network Interface > Network Protection  
Config > Network Interface > Max. Switch Threshold  
Config > Network Interface > Min. Switching Period  
Config > T1/E1 Interface > T1/E1 Circuit Protection  
1E-3 (see the following note)  
Disabled  
3
10 seconds  
Enable all or select the  
T1/E1s that redundant  
switching should occur on.  
Config > T1/E1 Interface > XCV Threshold  
1E-3 (see the following note)  
The XCV Threshold settings are based on the error rates  
considered acceptable on the STS-1 or DS-1 before switching.  
CIRCUIT AND NETWORK FAILURE RECOVERY MODE  
In this mode, two controller cards are installed and connected to  
two individual STS-1 lines. This is, of course, the most complete  
mode of redundancy. In this mode, the primary controller card is  
connected to the primary STS-1 line and the secondary controller  
card is connected to the secondary STS-1 line. The primary card  
and line actively transmit data, while the other card and line stand  
by ready to take over if the first card and line fail. For example, if  
CARD A fails, then control switches to CARD B and NET B.  
An important feature of the MX2800 STS-1 is its ability to  
internally re-route the network connection if a controller card and  
the opposite network connection fail. For example, in the  
illustration given in Figure 7-3, failed NET A is connected to  
healthy CARD A; and healthy NET B is connected to failed CARD B.  
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Chapter 7. Circuit and Network Redundancy  
In a case like this, the MX2800 STS-1 is able to automatically re-  
route NET B to CARD A.  
The configuration requirements for this mode are the same as the  
ones given for Circuit Failure Recovery Mode (see Table 7-1 on  
page 7-4) except for the NETWORK PROTECTION setting, which must  
be set to ENABLE.  
MX2800 STS-1  
Figure 7-3. Circuit and Network Failure Recovery Mode  
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Chapter 7. Circuit and Network Redundancy  
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Chapter 8 Power Loss Recovery  
The MX2800 STS-1 provides backup measures of protection for  
both power supply and power source failures. The following  
Non-Redundant Power Mode, which offers no backup  
protection, is described on page 8-2.  
Power Supply Recovery Mode, which offers backup protection  
in the event of power supply card failure, is described on page  
8-3.  
Power Supply and Source Recovery Mode, which offers a  
backup system for both card and source failure, is described on  
page 8-4.  
Battery Backup Mode, which offers battery backup in the event  
of a power outage, is described on page 8-5.  
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Chapter 8. Power Loss Recovery  
NON-REDUNDANT POWER MODE  
In Non-Redundant Power Mode, the MX2800 STS-1 houses only  
one power supply card and only one power source is available.  
There is no power failure protection. If a power supply card fails,  
then the unit is inoperable until the card is repaired or replaced. See  
Figure 8-1 for an illustration.  
MX2800 STS-1  
Figure 8-1. Non-Redundant Power Mode  
Power supplies are hot-swappable.  
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Chapter 8. Power Loss Recovery  
POWER SUPPLY RECOVERY MODE  
In Power Supply Recovery Mode, two power supply cards are  
installed and connected to a single power source (see Figure 8-2).  
In this mode, the MX2800 STS-1 can continue to operate during a  
power supply failure, without interrupting service. The power  
supplies are load sharing, so either power supply can provide power  
for the entire unit.  
When the unit is configured with dual internal AC power supplies,  
this is the only power protection mode available.  
MX2800 STS-1  
Figure 8-2. Power Supply Failure Recovery Mode  
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Chapter 8. Power Loss Recovery  
POWER SUPPLY AND SOURCE RECOVERY MODE  
In this mode, two power supply cards are installed and are  
connected to two individual power sources. The MX2800 STS-1  
handles any combination of power source or power supply failure.  
Much like the backup design for the controller cards, the MX2800  
STS-1 is able to internally re-route the power source if a power  
supply card and the opposite power source fail. For example, in the  
illustration given in Figure 8-3, failed POWER SOURCE A is  
connected to functional CARD A and functional POWER SOURCE B is  
connected to failed CARD B. In this case, the MX2800 STS-1  
automatically connects POWER SOURCE B to CARD A.  
This configuration is only available with DC power supplies.  
STS-1  
Figure 8-3. Power Supply and Source Failure Recovery Mode  
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Chapter 8. Power Loss Recovery  
BATTERY BACKUP MODE  
With the installation of the ADTRAN Power Supply/Battery  
Charger (PS/BC) and backup battery pack, the MX2800 STS-1 is  
able to continue operation without service interruption during a  
power outage. This PS/BC (P/N 4175043L2) provides -48 VDC to  
the MX2800 STS-1. It receives 115 VAC through a standard plug  
and wall socket.  
The PS/BC maintains the battery at peak charge (-48 V) at all times.  
If AC power is lost, the unit automatically transfers power to the  
battery without interrupting service. When AC power returns, the  
unit switches back to AC power and recharges the battery. For  
installation instructions, refer to the guide provided with the  
PS/BC. See Figure 8-4 for an illustration of this setup.  
.
MX2800 STS-1  
NET  
Magnified View  
PWR  
FAIL RET  
PWR  
FAIL  
AC/DC Power Supply  
Battery Charging Unit  
P/N 1175043L2  
AC Power Input  
-48 VDC  
Backup Battery Pack  
P/N 1175044L1  
Battery Charger  
Power Cable  
Figure 8-4. Battery Backup System  
The MX2800 STS-1 can operate on a fully-charged battery for four  
hours without recharging.  
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Chapter 8. Power Loss Recovery  
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Chapter 9 Transaction Language 1 (TL1)  
INTRODUCTION  
Transaction Language 1 (TL1) is a BELLCORE standard used in  
the input and output messages that pass between Operations  
Systems (OS) and Network Elements (NE) in telecommunication  
networks. It was developed to standardize equipment surveillance  
and memory administration, and to test with a common format.  
This release of TL1 primarily supports the interactive and  
autonomous retrieval of system events as part of a valid TL1  
session.  
OVERVIEW  
TL1 is an ASCII-based language that supports both command-  
response and autonomous (NE) message generation. Commonly,  
TL1 is used over a X.25 packet network but is completely  
independent of any physical layer protocols. For the  
MX2800 STS-1, TL1 is implemented as a Telnet session running  
over either Ethernet or PPP.  
Currently, up to eight simultaneous TL1 Telnet connections can be  
active. To manually bring up a TL1 Telnet connection, a Telnet  
client is used to request a connection on (TCP) port 3116. A  
successful connection will require that the MX2800 STS-1 be  
properly configured to operate via the LAN or modem. For  
example, in the LAN case, the MX2800 STS-1 must have the LAN  
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Chapter 9. Transaction Language 1 (TL1)  
management port enabled, a valid IP and gateway address, and a  
valid subnet mask.  
Once the Telnet connection is established, it is necessary to initiate  
a TL1 session. Establishing a TL1 session involves successful user  
authentication. Until a TL1 session is established, all commands  
other than those used to initiate or terminate a session will be  
denied (autonomous messaging is also disabled). Authentication  
involves the successful entry of a username/password pair. A  
table of usernames and associated passwords and privileges is kept  
for TL1 authentication. This table is maintained by an administrator  
through the VT-100 menus or through a TL1 session. For  
information on using the Act-User command to initiate a TL1  
session, see the section TL1 Commands on page 9-5.  
TL1 MESSAGES  
As stated earlier, TL1 messages are either part of a command-  
response exchange or are generated autonomously.  
The general format for a TL1 command is as follows:  
<VERB>[-<MOD1>[-<MOD2>]]:[<TID>]:[<AID>]:[<CTAG>]:[GB](:<PARAMx>(,<PARAMx>)*)*;  
Refer to TL1 Commands on page 9-5 for a list of TL1 commands  
supported by the MX2800 STS-1.  
TL1 Responses  
There are three types of TL1 responses:  
Acknowledgment messages  
Output Response messages  
Autonomous messages  
Acknowledgment Messages  
Acknowledgment messages are brief output messages generated in  
response to received TL1 commands. The MX2800 STS-1  
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Chapter 9. Transaction Language 1 (TL1)  
currently supports two types of acknowledgment messages: In  
Progress (IP) and All Right (OK).  
In Progress  
The IP acknowledgment message is usually generated as an interim  
response message to indicate that a message has been received and  
that the command is being executed. IP messages have the  
following general format:  
IP <CTAG><CR><LF>  
<
All Right  
The OK acknowledgment message indicates that a command has  
been received and that the required action was initiated and  
completed. This message has the following general format:  
OK <CTAG><CR><LF>  
<
Output Response Messages  
Output Response messages are generated in response to received  
commands and have the following general format:  
<CR><LF><LF>  
<SID> <YR>-<MO>-<DAY> <HR>:<MIN>:<SEC><CR><LF>  
M
<CTAG> <COMPLETION CODE><CR><LF>  
(<UNQUOTED LINE>|<QUOTED LINE>|<COMMENT><CR><LF>)*  
(;|>)  
For the MX2800 STS-1, the COMPLETION CODE field will contain  
one of the following values:  
COMPLD - Successful execution of the received command  
DENY - Denial of the received command  
When the received command is denied, the line in the message  
following the COMPLETION CODE line will contain a 4-letter error  
code. See the section TL1 Error Codes on page 9-13 for a  
description of possible MX2800 STS-1 error codes.  
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Chapter 9. Transaction Language 1 (TL1)  
The MX2800 STS-1 specifically uses “quoted line(s)” in the  
response message of successfully executed RTRV-ALM commands.  
The quoted line format is as follows:  
<AID>:<NTFCNCDE>,<CONDTYPE>,<SRVEFF>,<OCRDAT>,<OCRTM>,<LOCN>…  
The NTFCNCDE field will contain one of the following values:  
MN - Minor  
MJ - Major  
CR - Critical  
Refer to the condition types listed in Table 9-2 on page 9-10  
(MX2800 STS-1 Alarm Events) for possible MX2800 STS-1  
CONDTYPE codes.  
Autonomous Messages  
The Autonomous message is sent from the NE to the OS and is not  
associated with any explicit input message. The MX2800 STS-1  
uses this message to exclusively report alarmed and non-alarmed  
events. An autonomous message has the following general format:  
<CR><LF><LF>  
<SID> <YR>-<MO>-<DAY> <HR>:<MIN>:<SEC><CR><LF>  
<ALARM CODE> <ATAG> <VERB>[ <MOD1>[ <MOD2>]]<CR><LF>  
(<UNQUOTED LINE>|<QUOTED LINE>|<COMMENT><CR><LF>)+  
(;|>)  
Possible values for the ALARM CODE field include:  
*C - Critical Alarm  
** - Major Alarm  
* - Minor Alarm  
A - Non-alarm  
NULL - (blank)  
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Chapter 9. Transaction Language 1 (TL1)  
The MX2800 STS-1 specifically uses “quoted line(s)” in REPT-  
ALM and REPT-EVT autonomous messages. The REPT-ALM  
message has the following quoted line format:  
<AID>:<NTFCNCDE>,<CONDTYPE>,<SRVEFF>,<OCRDAT>,<OCRTM>,<LOCN>…  
The NTFCNCDE field will contain one of the following values:  
CL - Alarm Cleared  
TC - Transient Condition  
MN - Minor  
MJ - Major  
CR - Critical  
The REPT-EVT message has the following quoted line format:  
<AID>:<CONDTYPE>,<CONDEFF>,<OCRDAT>,<OCRTM>,<LOCN>…  
The CONDEFF field will contain one of the following values:  
CL - Standing Condition Cleared  
SC - Standing Condition Raised  
TC - Transient Condition  
For possible CONDTYPE codes for both REPT-ALM and  
REPT-EVT quoted lines, refer to the condition types listed in Table  
9-2 on page 9-10 and Table 9-3 on page 9-12, respectively.  
See the section TL1 Autonomous Messages on page 9-10 for a list  
of autonomous messages currently supported by the MX2800 STS-  
1.  
TL1 COMMANDS  
As stated in TL1 Messages on page 9-2, the general format for a  
TL1 command is:  
<VERB>[-<MOD1>[-<MOD2>]]:[<TID>]:[<AID>]:[<CTAG>]:[GB](:<PARAMx>(,<PARAMx>)*)*;  
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Chapter 9. Transaction Language 1 (TL1)  
Areas of concentration for TL1 support in the MX2800 STS-1  
include session initiation, termination, user account management,  
and system event reporting. Table 9-1 lists the commands currently  
supported by the MX2800 STS-1.  
Table 9-1. TL1 Commands  
ACT-USER::<username>:::<password>;  
Description Initiates a TL1 session  
TID*  
Circuit ID/Unit ID  
AID  
Username (must be present in TL1 user table)  
Transaction Number (integer)  
Password for associated username  
CTAG*  
PARAM1  
ALW-MSG-{EQPT|rr|ALL};  
Description Allows the transmission of the requested autonomous  
alarm(s)  
MOD2  
Specifies what entity type to allow:  
EQPT...General Equipment Unit  
rr ..........Facility or Circuit (i.e. T1, VT1, STS1)  
ALL ......All entity types  
TID*  
Circuit ID/Unit ID  
CTAG*  
PARAM1*  
Transaction Number (integer)  
Specifies what notification code to allow:  
MN....... minor  
MJ........ major  
CR ....... critical  
ALL........all notification codes  
CANC-USER;  
Description Terminates a TL1 session  
TID*  
Circuit ID/Unit ID  
AID*  
Username (must be present in TL1 user table)  
Transaction Number (integer)  
CTAG*  
* An asterisk indicates optional command blocks.  
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Chapter 9. Transaction Language 1 (TL1)  
Table 9-1. TL1 Commands (Continued)  
ED-USER-SECU::<username>:::,<password>,,<privileges>;  
Description Edits the requested TL1 user’s account  
TID*  
Circuit ID/Unit ID  
AID  
Username (must be present in TL1 user table)  
Transaction Number (integer)  
User’s new password  
CTAG*  
PARAM2  
PARAM4  
User’s new privileges:  
0 .......... disabled  
1 .......... guest  
3 .......... admin  
ENT-USER-SECU::<username>:::<password>,,<privileges>;  
Description Adds the requested user to the TL1 user table  
TID*  
Circuit ID/Unit ID  
Username  
AID  
CTAG*  
PARAM1  
PARAM3  
Transaction Number (integer)  
User’s password  
User’s privileges:  
0 .......... disabled  
1 .......... guest  
3 .......... admin  
DLT-USER-SECU::<user>;  
Description Removes the requested user from the TL1 user table  
TID*  
Circuit ID/Unit ID  
AID  
Username (must be present in TL1 user table)  
Transaction Number (integer)  
CTAG*  
INH-MSG-{EQPT|rr|ALL};  
Description Inhibits the transmission of the requested autonomous  
alarm(s)  
* An asterisk indicates optional command blocks.  
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Table 9-1. TL1 Commands (Continued)  
Specifies what entity type to inhibit:  
MOD2  
EQPT...General Equipment Unit  
rr ..........Facility or Circuit (i.e. T1, VT1, STS1)  
ALL ......All entity types  
TID*  
Circuit ID/Unit ID  
CTAG*  
PARAM1*  
Transaction Number (integer)  
Specifies what notification code to inhibit:  
MN....... minor  
MJ........ major  
CR ....... critical  
ALL........all notification codes  
RTRV-HDR;  
Description Replies with a normal "COMPLD" response  
TID*  
Circuit ID/Unit ID  
CTAG*  
Transaction Number (integer)  
RTRV-USER-SECU;  
Description Retrieves the current list of users from the TL1 users table  
TID*  
Circuit ID/Unit ID  
CTAG*  
Transaction Number (integer)  
RTRV-ALM-{EQPT|rr|ALL};  
Description Retrieves the requested alarm status  
MOD2  
Specifies what entity type to query:  
EQPT...General Equipment Unit  
rr ..........Facility or Circuit (i.e. T1, VT1, STS1)  
ALL ......All entity types  
TID*  
Circuit ID/Unit ID  
* An asterisk indicates optional command blocks.  
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Table 9-1. TL1 Commands (Continued)  
AID*  
Identifies the component to which the desired alarm  
pertains. Identifiers are dependent on the entity specified in  
"MOD2" as follows:  
for T1:  
101....DS1#1  
102....DS1#2  
.
128....DS1#28  
ALL....all DS1 circuits (default selection)  
for VT1:  
201....VT1#1  
202....VT1#2  
.
228....VT1#28  
ALL....all VT1 circuits (default selection)  
for STS-1:  
301....STS-1#1  
ALL....all STS-1 circuits (default selection)  
for EQPT:  
401....Generic  
402....Control Card A  
403....Control Card B  
404....Power Supply A  
405....Power Supply B  
ALL....all EQPT identifiers (default selection)  
for ALL:  
x ........specific identifier (e.g. "1", "28",etc.,)  
ALL....all identifiers (default selection)  
CTAG*  
Transaction Number (integer)  
PARAM1*  
Specifies what notification code to query:  
MN....... minor  
MJ........ major  
CR ....... critical  
* An asterisk indicates optional command blocks.  
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Chapter 9. Transaction Language 1 (TL1)  
TL1 AUTONOMOUS MESSAGES  
Autonomous messages provide a mechanism for real time reporting  
of system events. Transmission of these messages is disabled by  
default and must be explicitly enabled. Although most events  
reported are alarms, some events are only informational. The VERB,  
MOD1, and MOD2 parameters of the message indicate what type of  
event has occurred.  
REPT-ALM indicates an alarm event. Table 9-2 lists possible  
autonomous messages for alarm events.  
Table 9-2. MX2800 STS-1 Alarm Events  
AID  
Notification Condition  
Service  
Location  
Description  
Code  
MN  
CR  
Type  
Affecting  
101-128  
101-128  
101-128  
101-128  
101-128  
101-128  
201-228  
201-228  
TSA  
SA  
SA  
NEND  
NEND  
NEND  
NEND  
FEND  
FEND  
NEND  
FEND  
DS1 In-test  
LOS  
Loss Of Signal  
REPT  
ALM  
T1  
MN  
MJ  
BPV  
SA  
Bipolar Violation  
FACTERM  
AIS  
NSA  
SA  
T1 Failure  
MN  
MN  
MN  
MN  
Alarm Indication Signal  
STS-1 Unframed Ones Alarm  
VT path Loss of Pointer  
AIS  
SA  
LOP-V  
AIS-V  
SA  
SA  
VT path Alarm Indication  
Signal  
REPT  
ALM  
VT1  
201-228  
201-228  
201-228  
301  
MN  
MN  
MN  
MN  
RFI-V  
SMLF  
SA  
NSA  
NSA  
SA  
FEND  
FEND  
FEND  
NEND  
VT path Remote Failure  
Indication  
VT path Signal Label  
Mismatch  
UNEQ-V  
TSA  
VT path Unequipped  
REPT  
ALM  
STS-1 In-test  
STS-1  
9-10  
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Chapter 9. Transaction Language 1 (TL1)  
Table 9-2. MX2800 STS-1 Alarm Events (Continued)  
AID  
Notification Condition  
Service  
Location  
Description  
Code  
Type  
RCVRY  
ESW  
Affecting  
401 (General)  
401 (General)  
TC  
SA  
FEND  
NEND  
Protection Switch Alarm  
TC  
NSA  
Excessive Protection  
Switches  
402 (Ctrl A)  
403 (Ctrl B)  
TC  
CR  
CR  
CR  
CR  
CR  
CR  
CR  
MN  
MN  
MN  
MN  
CR  
MN  
TC  
PROTNA  
CONTEQPT  
LOS  
NSA  
NSA  
SA  
NEND  
NEND  
NEND  
NEND  
NEND  
Controller Card Removed  
402 (Ctrl A)  
403 (Ctrl B)  
Control Card Failure  
402 (Ctrl A)  
403 (Ctrl B)  
STS-1 Loss of Signal  
402 (Ctrl A)  
403 (Ctrl B)  
LOF  
SA  
STS-1 Loss of Frame  
402 (Ctrl A)  
403 (Ctrl B)  
EXT  
SA  
STS-1 Loss of H4 Multi-frame  
402 (Ctrl A)  
403 (Ctrl B)  
LOP-P  
AIS-L  
SA  
NEND STS-1 Loss of Pointer  
REPT 402 (Ctrl A)  
ALM 403 (Ctrl B)  
SA  
FEND  
FEND  
FEND  
FEND  
FEND  
FEND  
NEND  
NEND  
NEND  
STS-1 Line Alarm Signal  
Indication  
EQPT  
402 (Ctrl A)  
403 (Ctrl B)  
AIS-P  
SA  
STS-1 Path Alarm Signal  
Indication  
402 (Ctrl A)  
403 (Ctrl B)  
RFI-L  
SA  
STS-1 Line Remote Failure  
Indication  
402 (Ctrl A)  
403 (Ctrl B)  
RFI-P  
SA  
STS-1 Path Remote Failure  
Indication  
402 (Ctrl A)  
403 (Ctrl B)  
UNEQ-P  
SLMF  
NSA  
NSA  
SA  
STS-1 Path Unequipped  
402 (Ctrl A)  
403 (Ctrl B)  
STS-1 Path Signal Label  
Mismatch  
402 (Ctrl A)  
403 (Ctrl B)  
TRMT  
BPV  
STS-1 Transmit Loss of Signal  
402 (Ctrl A)  
403 (Ctrl B)  
SA  
STS-1 Excessive Code  
Violations  
404 (PS A)  
405 (PS B)  
PROTNA  
NSA  
Power Card Removed  
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Chapter 9. Transaction Language 1 (TL1)  
Table 9-2. MX2800 STS-1 Alarm Events (Continued)  
AID  
Notification Condition  
Service  
Affecting  
Location  
NEND  
NEND  
NEND  
NEND  
NEND  
NEND  
NEND  
Description  
Code  
Type  
404 (PS A)  
405 (PS B)  
MJ  
PWR  
NSA  
NSA  
NSA  
NSA  
NSA  
NSA  
NSA  
Power Supply Failure  
404 (PS A)  
405 (PS B)  
MJ  
MJ  
MJ  
CR  
MJ  
CR  
PWR  
PWR  
PWR  
PWR  
PWR  
PWR  
PowerSupply Communication  
Failure  
404 (PS A)  
405 (PS B)  
Power Supply Low  
REPT  
ALM 404 (PS A)  
EQPT 405 (PS B)  
Power Supply Charger Fail  
Power Supply Battery Low  
Power Supply Temp High  
Power Supply Temp Critical  
(cont’d)  
404 (PS A)  
405 (PS B)  
404 (PS A)  
405 (PS B)  
404 (PS A)  
405 (PS B)  
REPT-EVT indicates an informational event. Table 9-3 lists  
possible autonomous messages for informational events.  
Table 9-3. MX2800 STS-1 Informational Events  
AID  
Notification Condition  
Service  
Affecting  
Location  
NEND  
NEND  
NEND  
NEND  
NEND  
NEND  
Description  
Code  
Type  
501  
TC  
TIM-P  
SA  
NSA  
SA  
STS-1 Receive J-Trace  
Event  
502 (Ctrl A)  
503 (Ctrl B)  
TC  
TC  
TC  
TC  
TC  
NORMAL  
Controller Card Inserted  
STS-1 Clock Status Event  
STS-1 Clock Source Event  
502 (Ctrl A)  
503 (Ctrl B)  
SYNCSTAT  
CHNG  
REPT  
EVT  
EQPT  
502 (Ctrl A)  
503 (Ctrl B)  
RCVRY  
SYNCPRI  
SYNCSEC  
SA  
502 (Ctrl A)  
503 (Ctrl B)  
SA  
STS-1 PRI. Ext. Clock  
Event  
502 (Ctrl A)  
503 (Ctrl B)  
SA  
STS-1 SEC. Ext. Clock  
Event  
9-12  
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Chapter 9. Transaction Language 1 (TL1)  
Table 9-3. MX2800 STS-1 Informational Events (Continued)  
AID  
Notification Condition  
Service  
Location  
Description  
Code  
Type  
Affecting  
502 (Ctrl A)  
503 (Ctrl B)  
TC  
INT  
SA  
NEND  
STS-1 Clock Loss of  
Activity  
REPT  
EVT  
EQPT  
(cont’d)  
502 (Ctrl A)  
503 (Ctrl B)  
TC  
NORMAL  
NSA  
NEND  
Power Card Inserted  
TL1 ERROR CODES  
When the MX2800 STS-1 denies a received TL1 command, the  
Output Response message has an associated 4-letter error code  
indicating the reason for denial. Table 9-4 lists possible error codes.  
Table 9-4. TL1 Error Codes  
Error Code  
ICNV  
Description  
Input, Command Not Valid  
IITA  
Input, Invalid Target Identifier  
Input, Parameter Not Valid  
IPNV  
PIVI  
Privilege, Illegal User Identity  
Privilege, Login Not Active  
PLNA  
SSRE  
Status, System Resources Exceeded  
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Appendix A  
Pinouts  
The following tables give the pin assignments for the connectors  
located on the MX2800 STS-1. For more information on these  
connectors, see the chapter Installation and Operation on page 2-1.  
Table A-1. Craft Port Pin Assignments  
RJ Pin#  
DB-9  
Function  
GND  
RTS  
Direction  
1
2
3
4
5
6
7
8
-
5
7
3
6
2
8
4
1
9
I
I
TD  
DSR  
O
O
O
I
RD  
CTS*  
DTR  
DCD  
O
-
not used  
* Used for hardware flow control.  
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Appendix A. Pinouts  
Table A-2. LAN Port Pin Assignments  
Description  
Pin  
Name  
1
TD+  
The positive signal for the TD differential pair.  
This signal contains the serial output data  
stream transmitted onto the network.  
2
3
TD-  
The negative signal for the TD differential pair  
(pins 1 and 2).  
RD+  
The positive signal for the RD differential pair.  
This signal contains the serial input data  
stream received from the network.  
4, 5  
6
N/A  
RD-  
not used  
The negative signal for the RD differential pair  
(pins 3 and 6).  
7, 8  
N/A  
not used  
Table A-3. Modem Port Pin Assignments  
Pin  
1, 2, 3  
4
Description  
not used  
Tip  
5
Ring  
6, 7, 8  
not used  
The modem port pin assignments only apply to units equipped with  
an internal modem (4200659L1, L2, L3, and L4).  
A-2  
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Appendix A. Pinouts  
Table A-4. Amp Pin Assignments  
Pin  
Function  
Pin  
1
RING 1  
RING 2  
TIP 1  
TIP 2  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
2
3
RING 3  
TIP 3  
4
RING 4  
TIP 4  
5
RING 5  
TIP 5  
6
RING 6  
TIP 6  
7
RING 7  
TIP 7  
8
RING 8  
TIP 8  
9
RING 9  
TIP 9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
RING 10  
RING 11  
RING 12  
RING 13  
RING 14  
RING 15  
RING 16  
RING 17  
RING 18  
RING 19  
RING 20  
RING 21  
RING 22  
RING 23  
RING 24  
RING 25  
RING 26  
RING 27  
RING 28  
TIP 10  
TIP 11  
TIP 12  
TIP 13  
TIP 14  
TIP 15  
TIP 16  
TIP 17  
TIP 18  
TIP 19  
TIP 20  
TIP 21  
TIP 22  
TIP 23  
TIP 24  
TIP 25  
TIP 26  
TIP 27  
TIP 28  
FGND  
FGND  
Table A-4 applies to both the IN and OUT DSX-1/E1 Amp  
connectors.  
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Appendix A. Pinouts  
A-4  
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Appendix B  
Specifications Summary  
SPECIFICATIONS AND FEATURES  
This section describes the standard specifications and features  
incorporated in the MX2800 STS-1.  
DSX-3 Network Interface  
SONET STS-1 Asynchronously mapped  
VT1.5 or V2 Tributaries  
Line length: short (0-225) and long (225-450) feet to cross connect  
Line rate: 51.84 Mbps  
Line interface: dual 75-ohm BNC coax female connectors  
DSX-1 Interface(s)  
Line length: 0-655 feet  
Line rate: 1.544 Mbps  
Line code: AMI or B8ZS  
Line interface(s): two 64-pin Amp connectors  
Clocking  
Network: receive from DS3 network  
Local: internally generated  
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Appendix B. Specifications Summary  
Diagnostics  
STS-1 Network  
ANSI T1.107 compatible loopbacks  
Line loopbacks  
VT/Port Interfaces  
Local and network loopbacks  
Management  
VT-100 Terminal Interface  
RJ-48, EIA-232 compatible, female DB-9 adapter provided  
Integrated Modem Interface (4200290L1, L2, L3, and L4)  
Dial-up access for VT-100, SNMP, or Telnet  
Dial out “cry for help”  
SNMP/Telnet  
Integrated 10BaseT ethernet  
MIB II (RFC 1213), RFC 1215 and RFC 1595 compliant.  
ADTRAN Enterprise MIB for extended monitoring and  
control/configuration  
Alarms  
External alarm contacts for critical and noncritical alarms  
Normally open (NO) and normally closed (NC) pinout  
Front panel alarm cutoff switch  
Agency Approvals  
FCC Part 15, Class A, Part 68  
Industry Canada CS03  
UL and CUL  
NEBs level 3  
B-2  
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Appendix B. Specifications Summary  
Environment  
Operating: 0 to 50 °C (32 to 122 °F)  
Storage: -20 to 70 °C (-4 to 158 °F)  
Relative Humidity: Up to 95%, non-condensing  
Power  
AC version: 120 VAC, 30 W  
DC version: 48 VDC, 30W  
Physical  
Dimensions: 7.86“D x 17.0“W x 1.7“H  
Weight: 5.5 lbs. (redundant); 4.5 lbs. (non-redundant)  
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Appendix C  
Acronyms/Abbreviations  
ACO ................ alarm cut off  
ACT................. active  
AIS................... alarm indication signal  
ALM................ alarm  
AMI................. alternate mark inversion  
Amp................. amphenol  
ANSI................ American National Standards Institute  
async................ asynchronous  
BERT............... bit error rate test  
bps ................... bits per second  
BPV ................. bipolar violation  
CA.................... communications equipment available  
CAIS................ carrier side alarm indication signal  
CCITT............. Consultive Committee for International Telephony and Telegraphy  
CCV................. C-bit coding violation  
CD.................... carrier detect  
CES.................. C-bit errored seconds  
CO ................... central office  
CPE ................. customer premise equipment  
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Appendix C. Acronyms/Abbreviations  
CRC ................ cyclic redundancy check  
CS.................... clear to send  
CSES............... C-bit severely errored seconds  
CSU................. channel service unit  
CTS................. clear to send  
CV................... coding violation  
dB.................... decibel  
DBU ................ dial backup  
DCD ................ data carrier detect  
DCE ................ data communications equipment  
DDS................. digital data service  
DLCI............... data link connection identifier  
DS1.................. digital signal level one  
DS3.................. digital signal level three  
DSR................. data set ready  
DSU................. data service unit  
DSX-1.............. digital signal cross connect, level 1  
DTE................. data terminal equipment  
DTR ................ data terminal ready  
ES.................... errored seconds  
Eq.................... equipment  
Eqpt ................ equipment  
EXZ................. excessive zeros  
FBE................. F-bit errors  
FCC................. Federal Communications Commission  
FDL................. facility datalink  
FEAC.............. far-end alarm and control  
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Appendix C. Acronyms/Abbreviations  
FEBE............... far end block error  
HSSI ................ high-speed serial interface  
IP ..................... internet protocol  
KA ................... keep alive  
LAIS................ loop side alarm indication signal  
LAN................. local area network  
LCV................. line coding violation  
LED................. light emitting diode  
LES.................. line errored seconds  
LIU .................. line interface unit  
LL.................... local loopback  
LOF................. loss of framing  
LOS ................. loss of signal  
MBE ................ M-bit errors  
Mbps................ megabits per second  
MIB ................. management information base  
ms .................... millisecond  
NC.................... normally closed  
NI..................... network interface  
NMS ................ network management system  
NO ................... normally open  
NRZ................. non-return to zero  
NSA ................. non service affecting  
OCU ................ office channel unit  
OOF................. out of frame  
OOS................. out of service  
PCV................. P-bit coding violation  
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C-3  
Appendix C. Acronyms/Abbreviations  
PES.................. P-bit errored seconds  
POP................. point of presence  
PPP.................. point-to-point protocol  
PRF................. performance  
PSES ............... P-bit severely errored seconds  
PSTN............... public switched telephone network  
PVC................. permanent virtual circuit  
RD................... receive data  
RDL ................ remote digital loopback  
RL ................... remote loopback  
RMA ............... return material authorization  
RS.................... request to send  
RTS ................. request to send  
Rx.................... receive  
SA.................... service affecting  
SEFS ............... severely errored framing seconds  
SES.................. severely errored seconds  
SLIP................ serial line internet protocol  
SNMP.............. simple network management protocol  
SONET ........... synchronous optical network  
SR.................... data set ready  
SW56............... switched 56  
sync ................. synchronous  
TA.................... terminal equipment available  
TD ................... transmit data  
TDM................ time division multiplexing  
TM .................. test mode  
C-4  
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Appendix C. Acronyms/Abbreviations  
TR.................... data terminal ready  
Tx..................... transmit  
UAS ................. unavailable seconds  
WAN................ wide area network  
XCV................. excessive coding violations  
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C-5  
Appendix C. Acronyms/Abbreviations  
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Appendix D  
Glossary  
10BaseT  
Ethernet connector which implements the IEEE standard on 24-gauge,  
unshielded twisted-pair wiring.  
AMI  
Alternate mark inversion. A bipolar line-coding format in T1 transmission sys-  
tems whereby successive ones are alternately inverted.  
ANSI  
American National Standards Institute. A non-profit organization that coordi-  
nates voluntary standards activities in the United States.  
asynchronous  
A method of data transmission which allows characters to be sent at irregular  
intervals by preceding each character with a start bit, followed by a stop bit.  
bandwidth  
The bandwidth determines the rate at which information can be sent through a  
channel (the greater the bandwidth, the more information that can be sent in a  
given amount of time).  
baud rate  
A measure of transmission speed over an analog phone line. Baud rate measures  
the shortest signaling elements per second in the analog signal that a modem  
sends over an analog phone line. Does not necessarily equal the bit rate.  
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Appendix D. Glossary  
BERT  
Bit error rate test. A test that uses any of a number of stress patterns to test T3,  
T1, FT1, and DDS circuits.  
bipolar  
A signal containing both positive and negative amplitude components.  
bipolar violation  
See BPV.  
bit  
A binary digit representing a signal, wave, or state as either a one or a zero. A bit  
is the smallest unit of information a computer can process.  
bit error  
The receipt of an encoded bit that differs from what was sent by the transmitter.  
bit rate  
The speed at which bits are transmitted, usually expressed in bits per second  
(bps).  
bps  
Bits per second. The number of bits passing a specific point per second. Exam-  
ples of common rates are kbps (one thousand bits per second) and Mbps (one  
million bits per second). T3 operates at 44.736 Mbps.  
BPV  
Bipolar violation. A violation in the alternate mark inversion (AMI) line code for  
which consecutive 1s are represented by pulses of opposite polarity. BPVs that  
are not intentional (B8ZS) are counted as errors. Could also be the presence of  
two consecutive 1 bits of the same polarity on the T-carrier line.  
bridge  
A data communications device that connects two or more networks and forwards  
packets between them.  
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Appendix D. Glossary  
byte  
Generally, an 8-bit quantity of information. This term is used mainly in referring  
to parallel data transfer, semiconductor capacity, and data storage.  
carrier  
The provider of the telecommunication services to the customer site. Carriers can  
be local telephone companies, regional telephone companies, or any inter-  
exchange carrier such as AT&T, Sprint, or MCI.  
C-bit  
An overhead bit in the DS3 string not used for framing, parity, or alarm indica-  
tion.  
CCITT  
Consultive Committee for International Telephony and Telegraphy. A standards  
organization that devises and proposes recommendations for international com-  
munications. See also ANSI.  
CD  
Carrier detect. A signal generated by a modem or DSU/CSU indicating the pres-  
ence of a carrier signal on a communications link.  
channel  
A transmission path between two or more termination points; also called a cir-  
cuit, facility, line, link, or path.  
channel bank  
Equipment in a telephone central office or customer premises that performs mul-  
tiplexing of lower speed digital channels into a higher speed composite channel.  
The channel bank also detects and transmits signaling information for each chan-  
nel, thereby transmitting framing information so that time slots allocated to each  
channel can be identified by the receiver.  
channel service unit  
See CSU.  
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D-3  
Appendix D. Glossary  
clocking  
An oscillator-generated signal that provides a timing reference for a transmission  
link. A clock provides signals used in a transmission system to control the timing  
of certain functions. The clock has two functions: (1) to generate periodic signals  
for synchronization, and (2) to provide a time base.  
CPE  
Customer premises equipment. All telecommunications terminal equipment  
located on the customer premises, including telephone sets, private branch  
exchanges (PBXs), data terminals, and customer-owned, coin-operated tele-  
phones.  
craft port  
The electrical interface between the MX2800 STS-1 and the control terminal.  
The control terminal is used to communicate commands to the unit.  
CSU  
Channel service unit. A device used to connect a digital phone line coming in  
from the phone company to either a multiplexer, channel bank, or directly to  
another device producing a digital signal; for example, a digital PBX, a PC, or  
data communications device. A CSU performs certain line-conditioning and  
equalization functions, and responds to loopback commands sent from the cen-  
tral office. A CSU also regenerates digital signals. It monitors them for problems  
and provides a way of testing the digital circuit.  
CTS  
Clear to send. A signal on the DTE interface indicating that the DCE is clear to  
send data.  
data communications equipment  
See DCE.  
data service unit  
See DSU.  
dB  
Decibel. A unit of measure of signal strength; usually the relation between a  
transmitted signal and a standard signal source.  
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Appendix D. Glossary  
DCE  
DDS  
Data communications equipment. Device that provides all the functions required  
for connection to telephone company lines and for converting signals between  
telephone lines and DTE. Also see DTE.  
Digital data service. A private line digital service for transmitting data  
end-to-end at speeds of 2.4, 4.8, 9.6, and 56 kbps (and in some cases 19.2, 38.4,  
or 64 kbps). The systems can use central hub offices for obtaining test access,  
bridging legs of multi-point circuits, and cross connecting equipment. DDS is  
offered on an inter-LATA (local access and transport area) basis by AT&T and on  
an intra-LATA basis by the Bell operating companies.  
delay  
The amount of time by which a signal is delayed. A round-trip transmission  
delay measurement helps detect possible causes of protocol timeouts.  
DLCI  
Datalink communications identifier. A unique number assigned to a PVC end-  
point in a frame relay network. Identifies a particular PVC endpoint within a  
user's access channel in a frame relay network and has local significance only to  
that channel.  
DS1  
DS3  
DSR  
Digital signal level one. Twenty-four DS0 channels make up one DS1 (total  
bandwidth is 1.544 Mbps).  
Digital signal level three. Equivalent of 28 DS1s and 672 DS0s (total bandwidth  
is 44.736 Mbps).  
Data set ready. A signal on the DTE interface that indicates if a connection exists  
and if the devices are ready to start handshaking control signals so communica-  
tions can begin.  
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Appendix D. Glossary  
DSU  
Data service unit. A device designed to transmit and receive digital data on digi-  
tal transmission facilities.  
DTE  
E1  
Data terminal equipment. The end-user terminal or computer that plugs into the  
termination point (DCE) of a communications circuit. The main difference  
between the DCE and the DTE is that pins two and three are reversed.  
Transmission rates of 2.048 Mbps are available on T1 communication lines. See  
also T1.  
end device  
The ultimate source or destination of data flowing through a network (sometimes  
referred to as DTE).  
end user  
Subscriber who uses (rather than provides) telecommunications services.  
ES  
Errored seconds. A second with one or more coding violations (CVs).  
ethernet  
Transmission protocol for packet-switching LANs.  
facilities  
The equipment used by carriers to provide communication services.  
far end  
The distant end to that being considered. Not the end where testing is being car-  
ried out.  
FCC  
Federal Communications Commission. The U.S. federal agency responsible for  
regulating interstate and international communications by radio, TV, wire, satel-  
lite, and cable.  
D-6  
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Appendix D. Glossary  
FDL  
Facility datalink. FDL bits provide overhead communication between the termi-  
nal equipment in ESF framing.  
gateway  
A device which enables information to be exchanged between two dissimilar  
systems or networks.  
host computer  
The primary or controlling computer in a multiple computer operation.  
idle code  
In a T3 circuit, an idle code consists of a sequence of 1100 over the entire pay-  
load bandwidth.  
in-band  
Signaling (dialing, diagnostics, management, configuration, etc.) over the same  
channel used for data.  
IP  
Internet protocol. A protocol which provides for transmitting blocks of data  
between hosts identified by fixed-length addresses.  
LAN  
Local area network. A privately owned network that offers high-speed communi-  
cations channels to connect information processing equipment in a limited geo-  
graphic area.  
local loopback (LL)  
A type of test used to verify the operation of the local terminal equipment, the  
CSU, and the connection between the two. The signal from the DTE is looped  
back by the CSU and is sent back to the DTE.  
loopback  
The technique for testing the processing circuitry of a communications device.  
May be initiated locally or remotely via a telecommunications circuit. Device  
being tested will echo back received test data. The results are compared with the  
original data.  
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Appendix D. Glossary  
LOS  
Loss of signal. Defined as a line state in which no pulses are received for 175 bit  
positions.  
M13  
DS1/DS3 multiplexer that combines up to 28 DS1 channels into one DS3 chan-  
nel. Uses two-stage, bit synchronous TDM.  
Mbps  
Megabits per second (one million bits per second).  
MIB  
Management information base. A database of network management information  
used by SNMP.  
modem  
Acronym for modulator/demodulator. Equipment that converts digital signals to  
and from analog signals. Used to send digital signals over analog phone lines.  
monitor  
To watch or listen to a signal non-intrusively.  
multi-point circuit  
A single communications circuit that has more than two terminations.  
NC  
Normally closed. Relay switch contacts that remain closed when inactive.  
near end  
The unit on-site.  
NI  
Network interface. The demarcation point between the CPE and the PSTN.  
Normally open. Relay switch contacts that remain open when inactive.  
NO  
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Appendix D. Glossary  
NRZ  
Non return to zero. A mode in which the digital level is low for a 0 bit and high  
for a 1 bit, and does not return to zero between successive 1 bits.  
out-of-band  
Signaling that is separated from the channel carrying information (voice, data,  
video, etc.). Typically the separation is accomplished by a filter. The signaling  
includes dialing and other supervisory signals.  
point-to-point  
Type of communications link that connects a single device to another single  
device, such as a remote terminal to a host computer.  
POP  
Point of presence. Physical place within a LATA (local access and transport area)  
where a long distance carrier or a cellular provider interfaces with the network of  
the local exchange carrier (LEC). A POP is usually a building serving as the  
point of termination which houses switches and transmission equipment.  
protocol  
A set of rules controlling the orderly exchange of information between stations  
in data communications networks or systems.  
PSTN  
Public switched telephone network. Usually refers to the world-wide voice tele-  
phone network available for public use.  
red alarm  
Unframed all ones signal (keep alive signal). A red alarm is declared on detec-  
tion of LOS or OOF not caused by an alarm indication signal (AIS) that persists  
for more than two seconds.  
remote configuration  
A feature designed into ADTRAN products that allows remote units to be con-  
figured from a local unit or a VT 100 compatible terminal.  
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Appendix D. Glossary  
router  
A device that supports communications between networks. Routers are similar to  
bridges, with the exception that routers provide more functionality (such as find-  
ing the best route between networks and providing network management capa-  
bilities).  
service  
The provision of telecommunications to customers by a common carrier, admin-  
istration, or private operating agency using voice, data, and/or video technolo-  
gies.  
service provider  
A company that delivers or sells a telecom service.  
SES  
Severely errored seconds. A second in which more than 320 code violations  
(CVs) occurred or an OOF condition occurred.  
signaling  
Communication between switches to set up and terminate calls.  
SNMP  
Simple network management protocol. A control and reporting scheme widely  
used to manage devices from different vendors. SNMP operates on top of the  
Internet protocol.  
SONET  
Synchronous optical network. A standard format for transporting a wide range of  
digital telecommunications services over optical fiber. SONET is characterized  
by standard line rates, optical interfaces, and signal formats.  
synchronous  
Communications in which the timing is achieved by sharing a single clock. Each  
end of the transmission synchronizes itself with the use of clocks and informa-  
tion sent along with the transmitted data.  
D-10  
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Appendix D. Glossary  
T1  
Transmission rates of 1.544 Mbps are available on T1 communication lines. Also  
referred to as digital signal level 1 (DS-1). See also E1.  
T3  
Transmission rates of 44.736 Mbps are available on T3 communication lines.  
Also referred to as digital signal level 3 (DS-3).  
TDM  
Time division multiplexing. A technique for transmitting two or more signals at  
the same time over a single communication medium. This is accomplished by  
allocating channels to the bandwidth for specific increments of time.  
Telnet  
The standard TCP/IP remote login protocol specified in RFC-854.  
transceiver  
A combination of transmitter and receiver providing both output and input inter-  
faces within a single device.  
transmission  
The signaling of data over telecommunications channels.  
V.35  
A standard for trunk interface between a network access device and a packet net-  
work that defines signaling for data rates greater than 19.2 kbps.  
VT-100  
A non-intelligent terminal or terminal emulation mode used for asynchronous  
communications. Used to configure the MX2800 STS-1.  
WAN  
Wide area network. A communications network serving geographically separate  
areas. A WAN typically extends a LAN outside the building to link to other  
LANs over telephone lines.  
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Appendix D. Glossary  
yellow alarm  
A T3 yellow alarm is an indication sent back toward the source of a failed trans-  
mit circuit in a DS3 two-way transmission path. The X-bits (X1 and X2) are set  
to zero.  
D-12  
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Index  
ALM LED, active cards 2-14  
Numerics  
10BaseT connection, location of 2-7  
24 Hour Alarm History  
DS3 Statistics menu 5-2  
ALM LED, standby cards 2-15  
Amp connector pin assignments A-3  
Analog Network loopback test 6-3  
Answer on Ring menu 3-16  
Authentication Failure, MIB II Standard Alarm  
autonomous messages 9-4, 9-10, 9-12  
A
Acknowledge Alarms (ACO) menu 4-12  
acknowledgment messages 9-2  
All Right 9-3  
In Progress 9-3  
backup protection 8-1  
battery backup mode 8-5  
non-redundant power mode 8-2  
power supply and source recovery mode 8-4  
power supply recovery mode 8-3  
backup T3, routing information to 3-6  
BAD CODE CHECKSUM3-39  
battery backup mode 8-5  
battery backup, overview 1-8  
ACO buttons 2-12  
ACT LED, active cards 2-14  
ACT LED, standby cards 2-15  
Active Controller menu 3-5  
Active state, Card A/Card B 4-6  
AFE PROGRAM FAILURE3-39  
agent, SNMP 1-6  
alarm connectors, MX2800 2-8  
alarm events 9-10  
Alarm menu  
System State 4-5  
alarm traps  
DS2 3-30  
Power Supply Alarm 3-24  
Power Supply Alarm Trap 3-34  
Power Supply State 4-5  
baud rate, setting 3-17  
BERT  
CSU Loopback w/ 6-5  
Line 6-6  
breakout panel  
DS3 (near-end active and standby cards) 3-26  
power supply 3-33  
alarms  
DS2 3-21  
DS3 3-19  
power supply, alarm relay 3-24  
power supply, trap community name 3-33  
system 3-23  
connecting 2-6  
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Index-1  
 
Index  
overview 1-8  
damage while shipping 2-1  
data link state 4-2  
Date & Time menu 3-35  
date, setting 3-35  
default password 3-35  
Diagnostics menu  
C
Card A/Card B  
Active state 4-6  
Failure 4-6  
Not Installed 4-6  
Analog Network 6-3  
Codec Line/Net 6-4  
CSU Loopback 6-5  
CSU Loopback w/BERT 6-5  
Digital Diagnostics 6-9, 6-10  
Digital Line/Net 6-4  
DS3 Loopbacks 6-8  
Line Loopback 6-8  
Metallic Diagnostics 6-11  
T1/E1 Loopbacks 6-2  
Tributary 6-2  
Stand By 4-6  
Card A/Card B menu 4-6  
Card Comm menu 4-7  
Card Failure  
System State Alarm 4-6  
Card Removed  
Power Supply Alarm Trap 3-33  
card switching 7-3  
Charger Fail  
power supply alarm 3-24, 3-34  
Power Supply State 4-5  
CHK LED 2-13  
circuit failure protection 7-1  
circuit protection mode 4-7  
Clear All Local DS3 Statistics 5-9, 5-20  
clearing statistics 5-9, 5-20  
code violations  
limiting on DS3 network 3-4  
limiting on T1/E1 lines 3-12  
codec line/net loopback 6-4  
Cold Start MIB II Standard Alarm Traps 3-34  
CONFIGURATION CORRUPTS3-39  
Configuration menus 3-1  
Network Interface 3-3  
Dial String menu 3-15  
Dialout On Trap menu 3-16  
digital diagnostic loopback 6-10  
digital line/net loopback 6-4  
LOS 3-26, 3-28  
OOF 3-26, 3-28  
DS3 Loopbacks 6-8  
Alarm 4-2  
In Test 4-2  
Normal 4-2  
Save Configuration 3-43  
System Management 3-13  
Utilities 3-38  
DS3 State menu 4-2  
DSX-1/E1 connection 2-7  
DSX-1/E1 interfaces, rear panel 2-9  
DSX-3 connection 2-7  
configuring the MX2800 3-1  
configuring the network interface 3-3  
connecting the breakout panel 2-6  
Connection Timeout menu 3-16  
controller card failure 7-1  
craft port description 2-10  
craft port pin assignments A-1  
CSU Loopback 6-5  
E
error codes 9-13  
Error, Power Supply State 4-5  
establishing a terminal connection 2-10  
ETHERNET FAILURE3-39  
CSU Loopback w/BERT 6-5  
customer service viii  
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Excessive Switches, System State Alarm 4-6  
CHK 2-13  
PRF, active cards 2-14  
PRF, standby cards 2-15  
PWR 2-13  
F
Failure, Card A/Card B 4-6  
front panel description 2-10  
Line BERT 6-6  
Line Coding Violations (LCV) 5-7, 5-18  
Line Length menu 3-3  
long 3-3  
short 3-3  
Line Loopback 6-8  
G
Gateway IP Address menu 3-14  
gateway node, connection 3-14  
ground stud 2-7  
Local IP Address menu 3-14  
logging out 2-12  
long, line length 3-3  
loopback  
H
Hangup menu 3-17  
Host Facility menu 3-37  
Host IP Address menu 3-36  
CSU 6-5  
CSU with BERT 6-5  
DS3 6-8  
T1/E1 6-2  
I
Idle Timeout menu 3-16  
In Test, DS3 State 4-2  
informational events 9-12  
Initializing String menu 3-15  
installing the MX2800 2-1  
Interval starting at:, Performance Parameters  
(DS3) 5-7, 5-18  
Loopback menu, network configuration 3-6  
LOS  
DS3 Alarm Traps Near-end Active and  
Standby Cards 3-26, 3-28  
IP address trap 3-25  
IP Hosts menu 3-35  
Malfunction, Power Supply Alarm Trap 3-33  
management station addresses 3-35  
menu navigation 2-11  
metallic diagnostic loopback 6-11  
MIB II Standard Alarm Traps 3-34  
Authentication Failure 3-34  
Cold Start 3-34  
Link Down 3-34  
Link Up 3-34  
MIB, SNMP 1-6  
Min. Switching Period menu 3-6  
Miscellaneous menu 3-36  
Miscellaneous menus, network configuration 3-6  
MODEM FAILURE3-39  
Modem Mode menu 3-17  
modem port  
IP Security menu 3-35  
L
LAN interface, MX2800 2-8  
LAN pin assignments A-2  
LAN port 2-7  
Last Modem Response menu 3-17  
LED conditions  
active cards 2-14  
standby cards 2-15  
T1/E1 2-16  
LEDs 2-13  
ACT, active cards 2-14  
ACT, standby cards 2-15  
ALM, active cards 2-14  
ALM, standby cards 2-15  
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Index-3  
Index  
description 2-8  
location 2-7  
primary 3-15  
pin assignments A-2  
secondary 3-15  
MX2800 options 1-8  
MX2800 overview 1-1  
pin assignments A-1  
Amp connector A-3  
auxiliary port A-1  
control connector A-1  
craft port A-1  
LAN A-2  
LAN port A-2  
modem port A-2  
N
navigating the menus 2-11  
network failure protection 7-1  
Network Interface menus 3-3  
network interface, configuring 3-3  
network manager, SNMP 1-6  
Network Protection menu 3-6  
Network, Protection mode 4-7  
None, Protection mode 4-7  
non-redundant power mode 8-2  
Normal  
pinouts A-1  
power connection 2-7  
power connection, AC 2-7  
power connection, rear panel 2-9  
Power Fail, Power Supply Alarm 3-24  
Power Fail, Power Supply State 4-5  
power loss recovery 8-1  
battery backup mode 8-5  
non-redundant power mode 8-2  
power supply and source recovery mode 8-4  
power supply recovery mode 8-3  
Power Supply State 4-5  
Not Installed, Card A/Card B 4-6  
O
OOF  
Power Supply Alarm 3-24  
Power Supply Alarm Traps 3-33  
Power Supply State 4-5  
power supplies, hot-swappable 8-2  
power supply A/B 2-13  
Power Supply Alarm Trap  
Card Failure 3-33  
DS3 Alarm Traps Near-end Active and  
Standby Cards 3-26, 3-28  
operating the MX2800, overview of 2-1  
options for the MX2800 1-8  
output response messages 9-3  
P
Power Supply Alarm Traps 3-33, 3-34  
PASS3-39  
Card Removed 3-33  
Password menu 3-35  
password, setting the 3-35  
Malfunction 3-33  
Power Low 3-33  
Pause Between Calls menu 3-16  
P-Bit Severely Errored Seconds (PSES) 5-8, 5-19  
Clear All Local DS3 Statistics 5-9, 5-20  
Interval starting at: 5-7, 5-18  
Line Coding Violations (LCV) 5-7, 5-18  
Line Errored Seconds (LES) 5-8, 5-19  
P-Bit Severely Errored Seconds (PSES) 5-8,  
5-19  
Temperature Critical 3-34  
Temperature High 3-34  
Power Supply Alarms  
alarm relay 3-24  
power supply and source recovery mode 8-4  
power supply recovery mode 8-3  
Power Supply State  
Battery Low 4-5  
Charger Fail 4-5  
Error 4-5  
Normal 4-5  
Severely Errored Framing Seconds (SEFS)  
5-7, 5-18  
Performance Parameters menu (DS3) 5-6, 5-16  
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Power Fail 4-5  
Power Low 4-5  
Temp Critical 4-5  
service interruption 7-3  
Set Multiple menu selection 3-9  
setting the baud rate 3-17  
setting the date 3-35  
setting the password 3-35  
setting the time 3-35  
Temp High 4-5  
Power Supply State menu 4-5  
power up  
AC version 2-2  
DC version 2-2  
Severely Errored Framing Seconds (SEFS) 5-7, 5-  
PRF LED, active cards 2-14  
PRF LED, standby cards 2-15  
protection  
Severity Level menu 3-36  
shipping, contents 2-1  
short line length 3-3  
circuit failure 7-1  
network failure 7-1  
Protection Configuration menus 3-5  
Protection menu 4-7  
protection mode 4-7  
Circuit 4-7  
SNMP Management Options 3-25  
SNMP, overview 1-5  
specifications, MX2800 B-1  
Stand By, Card A/Card B 4-6  
State menus, T1/E1 3-8  
Statistics menu 5-1  
24 Hour Alarm History (DS3) 5-2  
Performance Parameters (DS3) 5-6, 5-16  
Statistics menus 5-1  
circuit failure recovery 7-3, 7-4  
Network 4-7  
network failure recovery 7-4  
None 4-7  
non-redundant 7-2  
Protection Threshold 3-11  
PWR FAIL, DC connector symbol 2-3  
PWR LED 2-13  
Status menu 4-1  
Acknowledge Alarms (ACO) 4-12  
Alarm (System State) 4-5  
Card A/Card B 4-6  
Card Comm 4-7  
DS3 State 4-2  
Power Supply State 4-5  
Protection 4-7  
System State 4-5  
R
rackmount installation 2-5  
Read Community Name address 3-25  
rear panel description 2-7  
receiving inspection 2-1  
redundancy 7-1  
Status menus  
DS3 State 4-2  
circuit and network failure recovery mode 7-  
4
Subnet Mask menu 3-14  
Supply Failure, System State Alarm 4-6  
switch cards, forcing the controller to 3-5  
Syslog Setup menu 3-36  
system alarms 3-23  
circuit failure recovery mode 7-3  
non-redundant mode 7-2  
RET, DC connector symbol 2-3  
return material authorization (RMA) vi  
RMA requests viii  
System Management menus 3-13  
system reset 3-43  
S
System Security menu 3-35  
System State Alarm  
Save Configuration menu 3-43  
Save on Logout menu 3-38  
self test results 3-39  
Card Failure 4-6  
Excessive Switches 4-6  
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Index-5  
Index  
Supply Failure 4-6  
Switched 4-6  
System State menu 4-5  
Transmission menu 3-36  
Trap Community Name menu 3-34  
Trap Generation menu 3-25  
Trap IP Addresses menu 3-25  
traps  
T
for calls between primary and secondary  
numbers 3-15  
for redialing 3-15  
T1/E1 menus  
State 3-8  
T1/E1 Status LEDs 2-15  
Telnet, overview 1-6  
Temp Critical, Power Supply State 4-5  
Temp High, Power Supply State 4-5  
Temperature Critical, Power Supply Alarm 3-24  
Temperature Critical, Power Supply Alarm Traps  
3-34  
Temperature High, Power Supply Alarm 3-24  
Temperature High, Power Supply Alarm Traps 3-  
34  
Tributary loopback 6-2  
unpacking the unit 2-1  
updating software  
via xmodem 3-40  
Utilities menu 3-38  
terminal connection, establishing 2-10  
TFTP updates 3-41  
time, setting 3-35  
viewing statistical information, display options for  
Timing menu 3-3  
TL1 9-1  
alarm events 9-10  
autonomous messages 9-10, 9-12  
commands 9-5  
W
Write Community Name 3-34  
error codes 9-13  
informational events 9-12  
messages 9-2  
X
XCV Threshold menus  
DS3 Configuration 3-4  
XMODEM updates 3-40  
overview 9-1  
responses 9-2  
Index-6  
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