Quick Eagle Networks Network Card DL3800E User Guide

DL3800E

Inverse Multiplexer

User’s Guide

Part 098-30380-01 Rev F

July 9, 2001

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Buyer's exclusive remedy, and Quick Eagle Networks' total liability, for any

and all losses and damages arising out of any cause whatsoever (whether

such cause is based in contract, tort [including negligence], strict liability,

or otherwise) shall in no event exceed the repair price of the unit from

which such cause arises. In no event shall Quick Eagle Networks be liable

for incidental, indirect, special or consequential damages resulting from

any SUCH CAUSE EVENT WHETHER OR NOT QUICK EAGLE

NETWORKS IS AWARE OF THE POSSIBILITY OF SUCH DAMAGES.

Quick Eagle Networks may, at its sole option, either repair or replace

defective goods or work, and shall have no further obligation to buyer.

Return of the defective items to Quick Eagle Networks shall be at buyer's

risk and expense.

Quick Eagle Networks shall not be liable for failure to perform its

obligations if such results directly or indirectly from, or is contributed to

by, any act of God or of buyer; riot; fire; explosion; accident; flood;

sabotage; epidemics; delays in transportation; lack of or inability to obtain

raw materials, components, labor, fuel or supplies; governmental laws,

regulations or orders; or labor trouble, strike, or lockout (whether or not

such labor event is within the reasonable control of Quick Eagle

Networks); other circumstances beyond Quick Eagle Networks' reasonable

control, whether similar or dissimilar to any of the foregoing.

DISCLAIMER

Quick Eagle Networks makes no representation of warranties with respect

to the contents of this document and specifically disclaims any implied

warranties of merchantability or fitness for any particular purpose. Further,

Quick Eagle Networks reserves the right to revise this publication and to

make changes in it from time to time without obligation to notify any

person or organization of such revision or changes.

Front Matter

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RIGHTS TO SOFTWARE

Quick Eagle Network ("QEN") software products are proprietary to QEN

and shall remain the property of QEN. Other than the limited, non-

exclusive and non-transferable license granted to END USER to use the

products internally, on a single CPU, for the purposes set forth herein, no

rights in or to any QEN software products or documentation are granted to

END USER. END USER is prohibited from duplicating, reproducing,

displaying, printing, disassembling, decompiling, reverse engineering or

analyzing for reverse engineering, distributing, sublicensing, disclosing or

otherwise transferring possession of or making available copies of QEN

software products or documentation, or any part or portion thereof. END

USER is also prohibited from making any modifications, additions,

adaptations, enhancements, improvements, changes or derivative works of

any QEN software product or documentation, or any part or portion

thereof. QEN software products may include software (including source

code) of Connexant Systems, Inc. and NetScout. The limitations on the

license and prohibitions set forth above shall apply equally to all such third

party software included in any QEN software products.

ISO COMPLIANCE

Products Manufactured Under

An ISO 9001 Certified

Quality Management System

YEAR 2000 COMPLIANCE

Quick Eagle Networks warrants that products offered as generally

available for sale and shipped on or after February 1, 1999 will meet “Year

2000 compliant” requirements. In addition, software released in and after

1998 meets the Year 2000 compliance criteria. For more information on

Year 2000 compliance, see our web site information at www.quickeagle.com

and click on the Year 2000 compliance icon.

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Malfunction of the equipment: In the event this equipment should fail to

operate properly, disconnect the unit from the telephone line. Try using

another FCC approved telephone in the same telephone jack. If the trouble

does not persist and appears to be with this unit, disconnect the unit from

the telephone line and discontinue use of the unit until it is repaired. Please

note that the telephone company may ask that you disconnect this

equipment from the telephone network until the problem has been

corrected or until you’re sure that the equipment is not malfunctioning.

WARNING: The DL3800 Inverse Multiplexer complies with FCC Part

15 of the Federal Communications Commission (FCC) Rules

concerning radio frequency emissions for Class A computing devices.

The following section is required by the FCC.

CAUTION: In accordance with FCC Part 15 section 15.21, changes or modifications

made by the buyer that are not expressly approved by Quick Eagle Networks could

void the buyer’s authority to operate this equipment. This equipment has been tested

and found to comply with the limits for a Class A digital device, pursuant to Part 15 of

the FCC Rules. These limits are designed to provide reasonable protection against

harmful interference when the equipment is operated in a commercial environment.

This equipment generates, uses, and can radiate radio frequency energy and, if not

installed and used in accordance with the instruction manual, may cause harmful

interference to radio communications. Operation of this equipment in a residential

area is likely to cause harmful interference in which case the user will be required to

correct the interference at his own expense.

INTERNATIONAL COMPLIANCE

Industry Canada

This Class A digital device meets all requirements of the Canadian

Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du

Règlement sur le matériel brouilleur du Canada.

Front Matter

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VCCI

NOTE: As per the Voluntary Control Council for Interference by

Information Technology Equipment (VCCI), the DL3800E Inverse

Multiplexer complies with VCCI Class 1 ITE. This equipment is in the 1st

Class category (information equipment to be used in commercial

and/or industrial areas) and conforms to the standards set by the

Voluntary Control Council for Interference by Information Technology

Equipment aimed at preventing radio interference in commercial

and/or industrial areas. Consequently, when used in a residential area

or in an adjacent area thereto, radio interference may be caused to

radios and TV receivers, etc. Read the instructions for correct handling.

REGULATORY COMPLIANCE

• European harmonized standards 73/23/EEC/, 91/31/EEC,

89/336/EEC, 93/68/EEC, and 91/263/EEC

• UL 1950 3rd Edition

• CAN/CSA C22.2 No. 950-95

• Comision Federal de Telecommunicationes (Mexico)

• CISPR 22 Level B (EN 55022)

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Table of Contents

Preface

xvii

Audience

xvii

Organization

Conventions

Symbols

xviii

Typography

xix

Quick Eagle Networks Technical Support

Returning a Unit

Send Us Your Comments

Document Change Record

xxi

Chapter 1, Quick Install Guide

1-1

Purpose

1-1

Configuration

Equipment Needed

Setup

1-2

1-3

Terminal Log On

Terminal Configuration

Unit Configuration

DTE Configuration

Network Configuration

Save Configuration

Chapter 2, Introduction

2-1

System Overview

Product Features

System Features

2-1

2-2

System Benefits

2-3

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Application

2-3

Functional Description

Signal Flow

2-4

E1 Port Crossover Detection

Overhead Functions

2-5

2-6

Chapter 3, Installation

3-1

Installation

Mounting

3-1

3-2

Rack Mounting

Desk Operation And Stacking

3-2

Power Cables And Connections

AC Power Connection

3-3

DC Power Connection

3-3

E1 Network Connection

3-5

3-6

DTE Cable And Connection

ASCII Terminal and SNMP Connection

Direct Connection

Modem Connection

Telnet Connection

Daisy Chaining

3-6

3-7

Chapter 4, Terminal Interface

4-1

4-2

Terminal Operation Overview

General Menu Flow

Screen Description

4-2

Inverse Multiplexer Main Menu Commands

Select Local/Remote

4-4

4-5

4-11

Alarms and Status

Statistics

Event History

4-15

viii

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Configuration

Unit Configuration

4-17

4-20

4-25

4-28

4-30

4-31

4-33

4-34

4-35

4-37

4-39

4-42

4-43

4-44

4-45

4-46

4-47

DTE Configuration

Network Configuration

Network Thresholds

Save Configuration

System Utilities

Software Download

Software Download Options

RAM Software Options

Delete Entire Unit Configuration (revert to factory config)

SNMP Configuration

In-Band SNMP to Remote

Save Configuration

Tests

DTE/Network Loopback

Payload Loopback

Line Loopback

Local Loopback

Remote Loopback Detection

Manual Network Restoration

Logout

Chapter 5, Front Panel Interface

5-1

General

5-1

5-2

Display Overview

Button Overview

Exit Button

Up Arrow and Down Arrow Buttons

Enter Button

5-2

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Front Panel LEDs

5-3

5-4

Access Levels And Protected Mode

Power Up And Reset

Top Menu

5-5

5-7

5-8

Select Remote/Select Local

Display Menu

Node (Common Equipment) Status

DTE Status

5-9

NET (1-8) Status

NET (1-8) Statistics

Test Menu

5-12

5-14

DTE Tests

DTE/NET Loopback

Network Tests (1-8)

Payload Loopback

Line Loopback

5-15

5-16

Local Loopback

Configuration Menu

Node Configuration

5-17

5-19

DTE Configuration Menu

Network Config

5-24

5-26

5-28

NET N Config

Network Thresholds

Chapter 6, Diagnostics

6-1

Equipment Return And Repair

Running Diagnostic Tests

6-1

6-2

DTE/Network Loopback Test

LOCAL Loopback Test

6-2

6-3

Payload Loopback and Line Loopback Tests

Possible Sources of Problems

Troubleshooting the DL3800E

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Appendix A, Specifications

A-1

E1 Network Interface

External Clock Interface

DTE Interface

A-1

A-2

A-3

A-4

COMM PORT

NMS Port (SNMP)

Front Panel

Diagnostics

Power

Environmental

Physical /Connectors

External Alarm Contacts

Appendix B, Pinouts

B-1

Terminal Connection

B-1

B-2

B-4

DCE Connectors

Channel 1 Data Cable Pin Assignments

DB-25 to DC-37 Data Port Cable Pin Assignments

Communication Port Pin Assignments

B-5

RS-449, DC-37 to DB-25 DCE Cable Pin Assignments

E1 Network Pin Assignments

DB-25 to DE-9 Adapter Pinouts

X.21 to DB-25 Cable Pinouts

External Clock Connector Pin Assignments

Alarm Pinout

B-6

B-7

B-9

B-10

DC Power Connections

DTE Clock Rates

Appendix C, Factory Default Settings

Glossary

C-1

G-1

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Index

I-1

xii

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List of Figures

Figure 1-1 DL3800E Inverse Multiplexer (front panel)

Figure 2-1 DL3800E Inverse Multiplexer

Figure 2-2 Typical Application for DL3800E

Figure 2-3 DL3800E Functional Schematic

Figure 3-1 DL3800E Rear Panel

1-1

2-1

2-3

2-6

3-2

Figure 4-1 INVERSE MULTIPLEXER MAIN MENU

Figure 4-2 ALARMS AND STATUS MENU

Figure 4-3 STATISTICS MENU

4-3

4-5

4-11

4-12

4-13

4-16

4-17

4-18

4-21

4-22

Figure 4-4 NET STATISTICS MENU

Figure 4-5 Additional NET STATISTICS

Figure 4-6 EVENT HISTORY MENU

Figure 4-7 CONFIGURATION MENU

Figure 4-8 UNIT CONFIGURATION MENU

Figure 4-9 DTE CONFIGURATION MENU (V.35)

Figure 4-10 DTE CONFIGURATION MENU (RS449)

Figure 4-11 DTE CONFIGURATION MENU (X.21)

xiii

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Figure 4-12 DTE CONFIGURATION MENU (HSSI)

Figure 4-13 Network Configuration Screen

Figure 4-14 Network Thresholds Configuration

Figure 4-15 SYSTEM UTILITIES MENU

Figure 4-16 SOFTWARE DOWNLOAD MENU

Figure 4-17 SOFTWARE UTILITIES MENU

Figure 4-18 LOGIN CONFIGURATION MENU

Figure 4-19 SNMP CONFIGURATION MENU

Figure 4-20 TESTS MENU

4-22

4-26

4-29

4-30

4-31

4-36

4-37

4-39

4-43

4-45

4-47

5-1

Figure 4-21 Loopbacks within the DL3800E unit

Figure 4-22 MANUAL NETWORK RESTORATION MENU

Figure 5-1 DL3800E Front Panel

Figure 6-1 TESTS MENU

6-2

Figure B-1 DC Power Connections

B-10

xiv

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List of Tables

Table 4-1 Main Menu

4-4

4-5

Table 4-2 3800E Alarm Descriptions

Table 4-3 NET Statistics Items

4-13

4-16

4-18

4-23

4-26

4-38

4-40

5-3

Table 4-4 Alarm Level

Table 4-5 Node Configuration Options

Table 4-6 DTE Configuration Menu Options

Table 4-7 Network Configuration Menu Options

Table 4-8 Login Configuration Options

Table 4-9 SNMP Configuration Options

Table 5-1 Front Panel LEDs

Table 5-2 Net Statistics Menu Information Display

Table 5-3 Net Statistics Items

5-9

5-10

5-18

5-21

5-29

6-4

Table 5-4 Configuration Menu Items

Table 5-5 Node Configuration Menu Items

Table 5-6 Net Threshold Options and Values

Table 6-1 Troubleshooting

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Table B-1 COMM and NMS Port Pin Assignments

B-1

B-2

B-3

B-4

Table B-2 HSSI DCE Connector Pin Assignments

Table B-3 V.35, M-34 to DB-25 DTE Cable Pin Assignments

Table B-4 EIA-530, DB-25 to DB-25 DCE Conn. Pin Assignmts

Table B-5 DB-25 to DC-37 Data Port Cable Pin Assignments

Table B-6 RS-449, DC-37 to DB-25 DCE Cable Pin Assignments B-5

Table B-7 Network Pin Assignments

Table B-8 DB-25 to DE-9 Pinouts

Table B-9 DB-25 to DB-15 Pinouts

Table B-10 External Clock Pinouts

Table B-11 Alarm Pinout

B-6

B-7

B-9

B-10

C-1

C-2

C-3

Table B-12 DTE Clock Rates

Table C-1 Unit Settings

Table C-2 DTE Settings

Table C-3 Network Settings

Table C-4 Network Threshold Settings

Table C-5 SNMP Configuration Settings

Table C-6 Test Settings

xvi

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Preface

The DL3800E Inverse Multiplexer User’s Guide provides the information

you need to install, test, operate, and manage the DL3800E Inverse

Multiplexer.

AUDIENCE

This guide is prepared for network managers and technicians who are

responsible for the installation of LAN-to-WAN equipment, and who are

thoroughly familiar with the network topology in which the DL3800E

Inverse Multiplexer is expected to operate.

ORGANIZATION

Chapter 1, “Quick Install Guide,” provides a concise installation procedure

for most applications.

Chapter 2, “Introduction,” provides a description of the DL3800E Inverse

Multiplexer system architecture, a discussion of features and benefits, and

a sample application.

Chapter 3, “Installation,” provides guidelines for placing and securing the

DL3800E Inverse Multiplexer in the operation site. Use this chapter to find

out about command tools, system access, and basic configuration.

Chapter 4, “Terminal Interface,” shows how to monitor and manage the

DL3800E Inverse Multiplexer using a VT100 terminal.

Chapter 5, “Front Panel Interface,” shows how to monitor and manage the

DL3800E Inverse Multiplexer using the front panel.

Chapter 6, “Diagnostics” provides guidelines for troubleshooting the

DL3800E Inverse Multiplexer.

Appendix A, “Specifications,” provides the electrical, physical, and

networking characteristics of the DL3800E Inverse Multiplexer.

Appendix B, “Pinouts,” details connector and pin assignments for the

DL3800E Inverse Multiplexer.

Appendix C, “Factory Default Settings,” lists factory defaults for the

DL3800E Inverse Multiplexer.

xvii

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CONVENTIONS

This section describes the formats used to differentiate specific types of

information throughout Quick Eagle Networks user guides.

Symbols

Symbols denote text that requires special attention. The information

contained alongside a symbol corresponds to one of four levels of severity:

NOTE: Follow guidelines in this, or the previous, paragraph to use the

Quick Eagle Networks product more effectively.

CAUTION: Follow guidelines in this, or the previous, paragraph to

avoid equipment damage or faulty application.

WARNING: Follow the instructions in this, or the previous, paragraph

to avoid personal injury.

ELECTRO-STATIC DISCHARGE — CAUTION: Follow the instructions in

this, or the previous, paragraph to avoid the discharge of static

electricity, and subsequent damage to the equipment.

xviii

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Typography

Quick Eagle Networks manuals delineate the names of files, commands,

and actions by using the fonts and typefaces described in the following

table:

Typeface or

Symbol

Purpose

Example

Courier

Font

AaBbCc123

The names of commands, files, and

directories, as well as on-screen

computer output.

Edit your.login file.

Use ls -a to list all files.

machine_name% You have

mail.

Courier

Font, Bold

AaBbCc123

The input you provide, as contrasted

with on-screen computer output.

machine_name% su

Keystrokes that you must provide to

use the application.

Press Ctrl-Lto refresh the screen.

To delete a file, type rmfilename

Palatino Font,

Italic

Command-line placeholder that you

replace with a real name or value.

AaBbCc123

Book titles, new words or terms, or

words that need to be emphasized.

Refer to Chapter 6.

These are called class options.

You must be logged in as root to

access this directory.

Symbol that denotes a single-step

procedure or task. Procedures

requiring more than one task are

numbered.

Zapf Dingbats

Font

Palatino Font, Hyperlinks in the table of

Bold Blue,

Underscore

AaBbCc123

contents.When viewing the Portable

Document Format (PDF) version of this

user guide, you can click on one of

these to jump directly to the selected

subject matter.

Palatino Font,

Blue

Hyperlinks throughout general text.

AaBbCc123

Helvetica Bold Denotes actual markings on front or

Attach the cable to the TERMINAL

port

back panels.

Preface

xix

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QUICK EAGLE NETWORKS TECHNICAL SUPPORT

If you should experience difficulty with the setup and/or operation of

your Quick Eagle Networks equipment, the Quick Eagle Networks

Technical Support staff can assist you at any time.

Telephone

FAX

(408) 745-4200

(408) 745-4240

E-mail

[email protected]

www.quickeagle.com

Internet

RETURNING A UNIT

Use the following procedure if you need to return a unit for service or

repair,

1. Contact the Quick Eagle Networks Customer Service Department

at (408) 745-4200, or via e-mail at [email protected], or fax a

request to (408) 745-4240 to obtain an ERA (Equipment Return

Authorization) number.

2. Package the unit carefully and, before sealing the shipping carton,

include any information you can provide about the problems you

are currently experiencing with the unit.

3. Attach an address label to the shipping carton. Be sure to include

the ERA number:

Customer Service Department

Quick Eagle Networks

217 Humboldt Court

Sunnyvale, CA 94089

ERA # ___________

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SEND US YOUR COMMENTS

Please let us know if this user guide manual meets your requirements.

Does the manual answer your questions?

Is the manual thorough?

Is the manual easy to use; that is, can you find the information you need?

Is anything missing from the manual?

What would you like to see in the manual?

Quick Eagle Networks Technical Publications

FAX

(408) 745-6250

E-mail

[email protected]

All suggestions and comments are appreciated.

DOCUMENT CHANGE RECORD

Date

May 1996

Issue Rev.

Description

Pages Affected

Initial Release

All

January 1999

January 2000

September 2000

October 2000

June 2001

Update & Misc.

Changes

Update & Misc.

Changes

All

Update & Misc.

Changes

Update & Misc.

Changes

Update & Misc.

Changes

Preface

xxi

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xxii

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Quick Install Guide

PURPOSE

This chapter is a quick reference for the setup and configuration of the

DL3800E Inverse Multiplexer (see Figure 1-1). Please note that not all

configuration items will be discussed, because this chapter only serves to

get you up and running.

Figure 1-1 DL3800E Inverse Multiplexer (front panel)

CONFIGURATION

Equipment Needed

• Terminal or PC, with DE-9 port, that will emulate an ANSI VT100

• DL3800E E1 Inverse Multiplexer product (various ports)

• The DL3000E comes either with BNC or 120 ohm

• DE-9 cable (plug-socket) 154-00050-01 (Model DL1081) or equivalent.

• DA-15 (plug) to RJ-48 (plug) for E1 connections 155-00011-01 (Model

DL1033) or equivalent.

• HSSI or 155-10082-01 (HSSI) (Model DL1404-10) or equivalent

• M-34 to DB-25 cables (v. 35) or 155-00903-01 (v. 35) (Model DL1300-10,

or equivalent

• DC-37 to DB-25 (RS-449) 155-00902-01 (RS449) (Model DL1302-10) or

equivalent

• X.21+DB-25 (X.21) 155-00907 (DL1314-10) and 155-00907-12 (DL1314-50)

(Model ID1314-10 and -50) or equivalent

1-1

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Setup

Terminal Log On

Connect your terminal to the COMM port on the back of the DL3800E unit.

Before you can log into the unit, you must make sure that terminal settings

match the DL3800E. Defaults for the DL3800E unit COMM port: 9600

baud, no parity, 8 bit word length, 2 stop bits. To log into the unit, first

press Ctrl-xfive times (that is, hold down the control key on the

keyboard and press the x key five times. This gives you the unit number.

Now type Ctrl-x # Unit Number and press Returnor Enter. When

prompted for user name and password press Returntwice, and the Main

Menu on the DL3800E unit should appear. The default unit number is 0.

Terminal Configuration

Change only the configuration items listed below. Leave the other options

at the factory default settings. To make a change, note that you must press

the UP and DOWN ARROW keys to highlight the item, press the space bar

until the desired option displays, then highlight CONFIRMand press Enter

before exiting the menu.

Unit Configuration

Select Configuration from the Main Menu. Select Unit Configuration. Set

the time and date. Set unit number other than zero. Select Confirm, then

select EXITto go back to the CONFIGURATION MENU.

DTE Configuration

WARNING: V.35/RS449/X.21 will only work at a higher data rate

with a DTE that can give terminal clocking, when in SCTE mode.

Configure the DTE interface for either v.35/RS449/x.21or HSSI. For

V.35/RS449/X.21 configuration, set the clock to SCTEand Normal TD/RD

clock.Set the DTE loss condition for NONE. Select Confirm, then select

EXITto go back to the CONFIGURATION MENU.

1-2

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Network Configuration

Set up a port for each E1 line you plan to use. Set Alarmto Report. Set

ACTICVE/RESTORE MODEto Use w/auto restore. Normally is CRC4

enable. Primary clock Xmt=Network (assuming carrier or remote unit

providing timing). Primary clock RCV should be set to AUTO. Configure

SER to Immediate Confirm and select EXIT. Select Exit again to the Main

Menu.

Save Configuration

Select SAVE CONFIGURATION from the Main Menu.

You’re done! If you have any questions, please feel free to call Quick Eagle

Network’s Technical Support at (408) 745-4200.

Quick Install Guide

1-3

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1-4

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Introduction

SYSTEM OVERVIEW

The DL3800E Inverse Multiplexer bridges the gap between E1 and E3 data

services by providing E1 multiplexing of multimegabit (up to Nx1.976

Mbps) DTE data onto two to eight E1 circuits. The DL3800E Inverse

Multiplexer is an economical solution to bandwidth intensive applications

as it provides multimegabit data transport without the need for E3 circuits.

The DL3800E unit is an ideal solution for applications such as LAN-to-

LAN internetworking, bulk data transfer, video teleconferencing, and

disaster recovery.

Figure 2-1 DL3800E Inverse Multiplexer

The inverse multiplexing technique employed by the DL3800E unit is

completely transparent to the DTE application, as the multiple E1 circuits

act as a single high-speed data link. The DL3800E unit can accept up to a

31-millisecond differential delay between individual E1 circuits, thus

providing the capability to accommodate E1 circuits from divergent paths.

This is often the case with circuits being utilized from different carriers.

An excessive delay alarm will cause an E1 line to be taken out of service. If

the relative delay between all the E1 lines exceeds 31 milliseconds, then the

E1 lines are removed from service one port at a time until the remaining

group reside within the 31-millisecond window. The first port taken out of

service will be the one that is farthest away from the average value,

regardless of its relative delay value. In order to restore an E1 line, you

must use the manual restore command. In order to bring an E1 line back

into service, execute the manual restore command on the remote unit first.

Then execute the manual restore command on the local unit. Auto restore

will not work for lines removed due to excessive delay.

The DL3800E unit supports either High Speed Serial Interface (HSSI) or

V.35/RS449/X.21 interfaces to the DTE.

2-1

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The DL3800E unit features an automatic rate fallback in the event of a

failing E1 circuit. If the performance of an E1 circuit is detected to be

falling below accepted levels, the DL3800E unit automatically removes the

E1 from service, and throttles back the DTE to a data rate corresponding to

the remaining E1s. When the alarm condition on the affected E1 has been

cleared, the DL3800E unit can automatically restore the E1 and data rate.

You can configure, control, and monitor the DL3800E unit through the

front panel, an ASCII terminal (locally or remotely via a modem or

remotely in-band) or a Simple Network Management Protocol (SNMP)

management station. The remote DL3800E unit can be managed in-band

using overhead in all active connections as the communications path. The

DL3800E unit features an integrated SNMP agent which supports the E1

Management Information Base (MIB) in addition to a unit specific

enterprise MIB.

A downloadable software feature of the DL3800E unit allows new features

and functionality to be added to the unit on line (without interrupting the

data) via the unit's built-in communications port, or via a selected E1

connection.

PRODUCT FEATURES

The DL3800E Inverse Multiplexer allows you to connect high-speed data

terminal equipment (DTE) to multiple E1 links, providing aggregate data

rates up to 15.808 Mbps. Utilizing up to eight E1 links simultaneously, the

DL3800E unit is ideally suited to high bandwidth applications such as

LAN-to-LAN internetworking, video teleconferencing, bulk data transfer

and high-speed data recovery.

System Features

• High bandwidth data transmission over 1 through 8 E1 ports.

• HSSI or V.35/RS449/X.21 DTE interface

• Automatic Bandwidth response/recovery

• Local or remote management via front panel, terminal, or embedded

SNMP agent

• Extensive diagnostics:

• Front panel indicators

• Built-in test loops

• Automatic self test

• Integral event log with nonvolatile memory

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System Benefits

The numerous features of the DL3800E unit provide you with many

benefits:

• Reliable, full performance access to E1 networks for the widest variety

of DTE products

• Enterprise wide visibility via SNMP

• Local and remote access via front panel, terminal, or telnet

• Complete maintenance and diagnostic support via exhaustive alarm,

statistic, and test capabilities

• Downloadable code provides for on-line upgrade to the DL3800E unit

software for both major and minor feature enhancements

Application

The DL3800E unit accepts data from a high-speed bridge, router, front-end

processor or other DTE device and multiplexes the bit stream onto one

through eight E1 circuits for transmission at N x 1.976 Mbps. Because the

inverse multiplexing process is completely transparent to the attached

equipment, the combined E1 circuits appear as a single high-speed data

link to the DTE. The DL3800E unit accepts up to a 31-millisecond

differential delay between individual E1 circuits, ensuring reliable

operation in multiple carrier networks.

A unique feature of the DL3800E unit is the automatic bandwidth response

to an E1 signal loss or network errors. If an E1 link falls below acceptable

performance levels, the DL3800E unit removes the link from service and

reduces the DTE data rate to correspond with the remaining E1 links in

service. When the alarm condition has been cleared, the DL3800E unit

restores the E1 link and increases the DTE data rate to its original level.

A typical application is shown in Figure 2-2.

Figure 2-2 Typical Application for DL3800E

Introduction

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FUNCTIONAL DESCRIPTION

The base DL3800E unit configuration consists of a motherboard with two

(E1) network interface connectors and the DTE connectors (HSSI and

V.35/RS449/X.21). Six additional E1 network ports can be added with the

addition of from one to three daughterboards, each daughterboard

supporting two additional E1 ports.

The general operation of the DL3800E unit is explained in the following

paragraphs which describe the signal flow and overhead functions.

Signal Flow

The DL3800E unit is configured by you for the number of E1 signals to be

used for transmission. The DL3800E unit will provide a smooth clock to the

DTE at the data rate required for the number of E1 outputs you have

configured. For E1, this rate will be Nx1.976 Mbps, where N is the number

(1 to 8) of E1s to be used.

The transmit smooth clock PLL can use any of the incoming E1 clocks, an

external clock, or internal clock as reference. The receive smooth clock will

use one of the receive clocks at its source. The smooth clock VCO will be

divided down to 8 kHz to be phase compared to the 8 kHz reference. The

receive buffers are large enough to accommodate variations between E1

receive clocks.

The DL3800E unit supports one DTE interface. For data rates up to 6 Mbps,

the DTE interface can be HSSI or V.35/RS449/X.21 (software selectable).

For data rates over 6 Mbps, only the HSSI interface will be supported.

Data is sent from the DTE interface to an Inverse Multiplexer (IMUX)

transmit framer. A 16-bit proprietary framing pattern is defined to satisfy

the requirements of inverse multiplexing communications. This frame is

constructed by using one payload bit in each frame for 16 consecutive

frames. For E1, the inverse multiplexing frame is the first bit after the

framing bit.

From the inverse mux framer, the data is sent to all E1 framers, where the

E1 framing is added, and then to the appropriate E1 network interface and

out over the E1 network.

All incoming configured E1 lines, with their respective clocks, are received

into a standard E1 framer. The output of the E1 framer is fed into the IMUX

framer.

Data coming into the DL3800E Inverse Multiplexer is stored in N

independent buffers, where N is the number of configured input channels.

From these buffers, the data will be read and IMUX framing removed.

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When the incoming signal is framed on the inverse mux frame, the framer

will start loading its Dual Port RAM. The address to the Dual Port RAM is

derived from the 16-bit inverse mux frame. The software will ask all

framers to latch their Dual Port RAM addresses at the same time, and by

looking at the addresses, the software can determine which network has

experienced the greatest delay.

From the receive inverse IMUX framer, the incoming data will go to the

receive multiplexer. The net that is last in time will be enabled to tell the

receive multiplexer when to start unloading the Dual Port RAM to the DTE

interface. To allow for jitter and wander specifications, the read address

counter will be positioned approximately three frames behind the write

address for the network last in time.

E1 Port Crossover Detection

When the IMUX E1 circuits synchronize, they use the IMUX framing to

communicate to know the ports (1-8). A crossover is a situation where a

network line is connected to a port on the remote 3800E different from the

port it originates from on the local 3800E.(e.g. port 1 on the local unit is

connected to port 2 on the remote unit). This situation will cause DTE

traffic to be incorrectly multiplexed and, as a result, severely errored.

When a crossover is detected, the DL 3800E removes the crossed port from

the DTE data bundle and reduces the DTE data rate. The LED will change

to flashing green and the port status in the Alarms & Status menu read

“Line crossed”, and also (Crossed to port:x), where x is the port number

connected at the remote end. It also generates an SNMP alarm:

enCrossoverAlarm.

When the crossover is cleared, the port is restored to DTE bundle and the

LED restores to green. Port crossover status clears and the SNMP alarm

enCrossoverAlarm is idled.

An IMUX E1 circuit is reestablished as soon as the mismatched circuits are

disconnected and reconnected properly.

Figure 2-3 is a functional schematic of the DL3800E unit showing a unit

supporting four E1 lines.

Introduction

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E1 Framer

E1 TX Int.

TX_

DTE

INTF

TX LCA

IMUX Framer

E1 Framer & RX Int.

IMUX Buffer

IMUX Framer

RX_

DTE

INTF

LCA

Figure 2-3 DL3800E Unit Functional Schematic

Overhead Functions

The overhead functions consist of a controller, front panel, two RS232

communication interfaces (terminal and network management), and a

power supply.

The controller function is performed by a microprocessor on the main

board. The controller collects E1 statistics. It also processes E1 alarms and

performance monitoring information, as well as supporting unit

configuration, test and maintenance activities. Finally the Controller block

supports the front panel display, terminal port, and SNMP port interfaces.

The front panel consists of a 16-character vacuum fluorescent display,

4-key keypad, and LEDs. This panel can be used to provision the unit, run

diagnostic tests, or access performance statistics.

The serial ports are RS-232C compatible ports with one port supporting a

menu driven ASCII terminal interface, and the other port providing access

to the built-in SNMP agent functionality.

The DL3800E unit can be ordered with DC or AC power supplies and the

built-in power supply has a range of 110 to 240 VAC and -40 to -75 VDC.

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Installation

INSTALLATION

NOTE: Before beginning the installation process, inspect the DL3800E

unit for damage which may have occurred during shipment. If damage

has occurred, notify Quick Eagle Networks and your package carrier

immediately.

1. Unpack and inspect the DL3800E unit for damage that might have

occurred during shipment. If necessary, wipe off the exterior with

a soft cloth. Save all packing slips and papers that come with the

unit. Save the shipping cartons and packing materials until

installation is complete and proper operation is verified.

2. Verify that all items ordered are included in the shipment. The

shipment should consist of the following:

• DL3800E Digital Inverse Multiplexer

• DL3800E User’s Guide (this manual).

• Appropriate data and network interface cables and connectors (if

ordered).

• Power cord

3. Mount the DL3800E unit.

See “Mounting” on page 3-2.

4. Connect Power Cables and Connections.

See “Power Cables And Connections” on page 3-3

5. Connect network cables to the DL3800E unit.

See “E1 Network Connection” on page 3-5

6. Connect the DTE cable to the DL3800E unit.

See “DTE Cable And Connection” on page 3-5

7. ASCII Terminal and SNMP Connection

See “ASCII Terminal and SNMP Connection” on page 3-6

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8. Configure Unit

See “Unit Configuration” on page 4-17 (ASCII terminal)

a. Configure COMM PORT

See “Unit Configuration” on page 4-17 (ASCII terminal)

b. Configure NMS (Network Management) Port

See “SNMP Configuration” on page 4-39 (ASCII terminal)

9. Configure Network

See “Network Configuration” on page 4-25 (ASCII terminal)

10. Configure DTE

See “DTE Configuration” on page 4-20 (ASCII terminal)

MOUNTING

Rack Mounting

The DL3800E unit (Figure 3-1) is shipped with mounting ears for a 19- or

23-inch rack that are mounted for use with a 19-inch rack.

Desk Operation And Stacking

Four stick-on rubber feet are supplied with each DL3800E unit. Remove the

covering and stick them onto the DL3800E unit bottom. You can now stack

units as required on a flat surface in a well-ventilated, secure area.l

Figure 3-1 DL3800E Rear Panel

NOTE: On DC versions of the DL3800E, the AC receptacle will be

covered with a DC face plate.

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POWER CABLES AND CONNECTIONS

The DL3800E unit can be ordered with an AC or DC power supply.

AC Power Connection

An AC power cord is supplied with the DL3800E -AC-XXX to provide 120

to 240 VAC power. The power cord receptacle is located on the rear panel

of the DL3800E-AC-XXX. For AC power, connect the AC power cord to the

DL3800E-AC-XXX, and plug into the nearest AC outlet.

DC Power Connection

The Quick Eagle Networks DL3800E Inverse Multiplexer can also be

DL3800E is located on the back panel. There are eight screw terminals

located on the rear panel. The two screw terminals on the far right (looking

at the rear panel) are for DC power.

Connect the -48 V wire to the screw terminal labeled —. Attach the 48 V

Return(+) wire to the screw terminal to the immediate right, labeled +.

Connect earth ground to the ground stud.

When using DC power, you will need the following:

• A tray cable which must be UL recognized 14 AWG, 3 conductors,

copper strand.

• Electrical power and control cable type TC, 600 V 90^°C. (Alpha Wire

Company No. 45443 is an example.)

To mechanically install the DL 3800E when using DC power, perform the

following steps:

1. Place the DL3800E unit on a flat surface or in a rack.

2. Before you connect the DL3800E unit to the centralized DC power

source, strip 2.0 inches of jacket material off the tray cable and

0.5 inch of insulation off each wire.

3. Connect the -48 VDC wire to the - terminal (on the rear panel’s

terminal block, using a small flat screw driver (¼-inch blade) to

fasten the wire.

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4. Connect the ground (+) wire to the + terminal in the same way.

NOTE: The unit is designed to operate with negative voltage;

therefore, you must connect the positive terminal to ground.

5. Connect the frame ground terminal to the local earth ground, if

required.

6. To minimize disturbance to the wires through casual contact,

secure a tray cable near the rack frame using multiple cable ties.

Use at least four cable ties, a minimum of four inches apart. The

first tie should be within six inches of the terminal block.

7. Connect the DL3800E unit to a DC power source.

WARNING: Damage to the DL3800E unit may result if power is

connected improperly. Do not operate the DL3800E unit without a

ground connection to the ground stud.

The DL3800E unit automatically runs a self-test at power up, during

which the front panel displays a self-test message. Payload service resumes

upon completion of the self-test and the front panel displays the following

default message:

EFS 00.0 PERCENT

WARNING: Do not operate the DL3800E unit without an earth

ground connection to the ground stud.

The DL3800E unit is designed to operate with a negative power supply.

This means the positive terminal is connected to the ground.

WARNING: Damage to the DL3800E unit may result if power is

connected improperly.

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E1 NETWORK CONNECTION

The eight port connector can be either a DB-9, DB-15, or BNC. The

connectors are located on the DL3800E unit back panel for connecting to

the E1 networks.

Connect the DL3800E unit to each E1 Network using the appropriate cable

and connectors, available from Quick Eagle Networks.

DTE CABLE AND CONNECTION

DTE interface connectors are provided on the back of the DL3800E, a

50-pin SCSI socket receptacle for HSSI compatible DTE, and a DB-25

(E1A-530) socket connector for V.35/X.21 or RS-449 compatible DTEs.

If using a HSSI interface, the cable connecting the DL3800E unit to the DTE

consists of 25 twisted pairs with an overall foil/braid shield. The DL3800E

unit end of the cable should have a plug connector. One 50-pin SCSI socket

receptacle is provided on the rear of the DL3800E unit to connect it to

HSSI-based networks/systems. Cables and connectors are available from

Quick Eagle Networks. Using the appropriate cable and connectors,

connect the DL3800E-HSSI connector to the HSSI DTE.

If using a V.35/X.21 interface, use a shielded cable supplied by Quick Eagle

Networks to connect the DL3800E unit to the DTE. One DB-25 (E1A-530)

socket connector is provided on the back of the DL3800E unit to connect

the DL3800E to the V.35/RS-449/X.21 compatible DTE. Using the

appropriate cable and connectors, connect the V.35/RS-449/X.21 DTE

device to the DL3800E unit.

ASCII TERMINAL AND SNMP CONNECTION

The DL3800E unit is accessed by an ASCII terminal or SNMP Management

System workstation through direct, daisy-chained, or dial-up modem

connection.

On the rear panel of the DL3800E unit, two socket DE-9 receptacles labeled

NMS and COMM PORT are provided for connection to the SNMP

workstation or ASCII terminal, respectively. An RS-232 straight cable, with

DE-9 plug connectors, is used to link the DL3800E unit with the terminal,

modem, or workstation.

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Direct Connection

For direct connection, using the appropriate DE-9 cable, connect the ASCII

terminal or SNMP workstation to the DL3800E unit through the Terminal

or SNMP connector on the back of the rear panel. The baud rate, parity bit,

and stop bit settings must match those of the terminal: baud rate, 9600;

eight bits, no parity and two stop bits.

Modem Connection

When using a modem, the baud rate, parity bit, and stop bit settings of the

modem must match the terminal or workstation port default settings: baud

rate 9600; eight bits; no parity, and two stop bits. If these parameters are

not the same, reconfigure the unit default settings using the front panel

controls.

When the parameters of the modem and the terminal or workstation port

coincide, using the RS-232 straight cable, connect the modem to the

appropriate RS-232 comm port (COMM PORT or NMS) on the rear panel of

the DL3800E. Then, connect the modem to the phone line and the ASCII

terminal or SNMP workstation. DE-9 to DB-25 adapters and null-modem

adapters are available from Quick Eagle Networks. Specify a plug or socket

terminal connection when ordering.

For direct connection, the terminal, workstation, or modem may be placed

up to 15 meters away from the comm port when operating at 9600 baud.

Distances may be increased if the baud rate is reduced.

Telnet Connection

For a telnet connection, connect a device that provides a SLIP connection to

the NMS port of the DL3800E unit. Examples include a terminal server,

router auxiliary port, or the Quick Eagle Networks Management Access

Processor (MAP). Be sure to provide a valid IP address to the DL3800E.

There can be up to two active telnet sessions at any given time. There is no

way for a user to delete the telnet session of another user.

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Daisy Chaining

Multiple DL3800E units can be daisy-chained together through the

Terminal Port to provide centralized network monitoring and management

capabilities.

A ribbon-type cable with DB-9 connectors is available from Quick Eagle

Networks for daisy-chaining your DL3800E units. You can order specific

cables to daisy-chain four units (Part No. 154-00051-01), eight units

(Part No. 154-00052-01), or twelve units (Part No. 154-00053-01). To place an

order, contact the Quick Eagle Networks Sales Department at (408) 745-

6200.

If using a cable other than the above, see “Terminal Connection” on page

B-1 for Terminal Port pin assignments. With this cable, CTS (pin 8) must be

connected between DL3800E units, but must not be connected to the

terminal.

The one socket connector on the ribbon is to be connected to the terminal

or modem (if a remote site). The remaining plug DE-9 connectors are

connected to the DL3800E1 unit port. Each unit must be assigned a unique

node number.

When units are daisy-chained together, the local terminal must be

operating in Multidrop Mode. Each unit should be given a unique Node

Number.

NOTE: For detailed instructions on installing SNMP systems, refer to

the separate installation guides for these products.

Installation

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Terminal Interface

Each DL3800E unit is equipped with an integrated RS-232 ASCII user

interface that can be accessed through the COMM PORT (DE-9 connector)

located on the rear panel of the DL3800E. Through this interface, you can

perform various functions described in this section.

When operating in multidrop mode (that is, when multiple DL3800E units

may be daisy-chained together for centralized network management), you

must log in to establish communication with a single unit on the network.

Only one unit may be accessed at a time. All units continuously monitor

the line, but only the unit which is logged on will respond to terminal

commands. When no unit is logged on, the characters typed on the

terminal will not show up on the display screen.

To log on and log off a particular unit, follow these procedures:

1. Type five Ctrl-Xcommands in a row to return a “roll call” of all

Node Numbers on the chain.

This feature is useful when the Node Numbers of any units on the

network are unknown.

2. Type Ctrl-Xfollowed by #, the node number, and press Enter(or

Return).

These characters will not be displayed on the terminal screen, but

the units will receive them.

If passwords are enabled for the unit, you will be prompted for the

username and password. Initially, no password or username is

needed, so simply press Enterwhen prompted for a username or

password.

3. The Main Menu will appear. If not, check that the Node Number

matches what is typed on the terminal.

If it still does not appear, check that the DL3800E unit port settings

match the terminal settings (baud rate, parity, data bits, and stop

bits). If so, a null modem adapter may be required to interchange

pins 2 and 3 (transmit and receive) from the terminal.

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4. To log on to another DL3800E unit on the same daisy chain,

simply type Ctrl-X, followed by a # and the Node Number and

press Enter.

The previous unit is logged out and the new unit is logged on.

5. To log off all units without logging onto any new units, press

Ctrl-Xat the Main Menu.

TERMINAL OPERATION OVERVIEW

General Menu Flow

The menu interface for the DL3800E unit consists of the Main Menu, and a

series of submenus.

From the Main Menu, select the submenu to be selected or function to be

performed by moving the highlight bar through the menu screen with the

Cursor Arrow keys until the desired function is highlighted.

To prevent any accidental data and/or status change, every proposed

change requires a confirmation response. To confirm a proposed change,

move the highlight bar to Confirm on the menu and press Enter. Type any

other key and the change will not be made. This will cause the terminal to

continue to prompt you to confirm the change(s). To abort the change,

move the highlight bar to Exit, and press the Enterkey rather than

confirming the change.

NOTE: Pressing the Escape key brings the display back to Select

Local/Remote when in the Main Menu, and back to Exit when in the

EXECUTION MENU.

Screen Description

The top four lines of each display screen contain information regarding the

last two status or alarm conditions reported by the DL3800E unit. This

information includes: the severity of condition reported; the date and time

condition was reported; the Unit and NET (E1 port) reporting the alarm; a

code for the type of condition, and a description of the condition.

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The next two lines in the menu, which are always highlighted, represent

the Status Bar. The first line of the Status Bar displays the product type, the

software release number, node number, node name, date & time, and

current alarm status of the unit. The second line displays the selected

device address and name.

Major 01/01/90 04:58:17 Unit: 0

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: 0 NET : 1 (114)

Network 15 Minute UAS Major Threshold Exceeded

NET : 2 (114)

Digital Link DL3800E

SR 3.00.00 NODE 7: 01/01/90 05:55:07 MN

SELECTED DEVICE ADDRESS:

7.00.000 NAME:

INVERSE MULTIPLEXER MAIN MENU

Select Local/Remote

Alarms & Status

Statistics

Event History

Configuration

System Utilities

Tests

Manual Network Restoration

Logout

Figure 4-1 INVERSE MULTIPLEXER MAIN MENU

The product type is a DL3800E Digital Inverse Multiplexer.

The software revision is 3.XX, where xx equals the latest software revision.

This number is useful to determine the features that are supported with

this release.

The Node number, in this case 7, is user defined. This can be used to

further identify the node within your network. It is recommended that all

nodes be given a unique node number. This is crucial in inter-node

communications.

The Node name (HOME), is user defined. You can use this field to uniquely

describe the node within the network.

The date and time are give in mm/dd/yy, and hh:mm:ss format.

The alarm indicator, in this case MN for minor, is given on each screen to

alert you of a local Node alarm.

The Selected Device address, in this example 7.00.000is shown at the

beginning of the second status line. A device is a generic term to indicate a

NODE (unit).

Terminal Interface

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INVERSE MULTIPLEXER MAIN MENU COMMANDS

When a DL3800E unit is first powered up, the Main Menu (Figure 4-1 on

page 4-3) appears on the terminal screen. This describes those functions

that can be performed, parameters viewed, changed and/or deleted from

this menu. The INVERSE MULTIPLEXER MAIN MENU items are shown

in Table 4-1 (these items are described in more detail in the following

sections)..

Table 4-1 Main Menu

Description

Select Local/Remote

Allows you to move between the Main Menu of the Local and Remote

units.

Alarms and Status

Provides current alarm and status report of the common equipment, DTE,

and E1 lines.

Statistics

Allows you to access the STATISTICS MENUS of the various E1 lines.

Allows user to view and clear alarms and event history of the DL3800E.

Event History

Configuration

Allows you access submenus to configure certain parameters of the

DL3800E, network, and DTE.

System Utilities

Allows you to perform various system utility functions such as download

software, configure SNMP, configure login, and delete or save

configuration.

Tests

Allows you to initiate diagnostic loopbacks.

Manual Network Restoration Allows you to manually restore a E1 circuit instead of it being restored

automatically upon the clearing of a problem.

Logout

Allows you to log out of the DL3800E unit without having to wait for

automatic logout.

SELECT LOCAL/REMOTE

When in the INVERSE MULTIPLEXER MAIN MENU, this option allows

you to view and access the other items on either the local or remote

DL3800E. The Device Address and Name in the header portion of the

display screen will identify the unit that the terminal is presently

communicating with.

To move to the Main Menu of the other DL3800E, highlight SELECT

LOCAL/REMOTE and press Enter. The Device Address and Name in the

header should change to the new unit as shown in Figure 4-1 on page 4-3.

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ALARMS AND STATUS

The ALARMS AND STATUS MENU is a view-only screen that allows you

to review the current ALARMS AND STATUS items being reported by the

DL3800E. To access this screen, move the highlight bar in the INVERSE

MULTIPLEXER MAIN MENU to ALARMS AND STATUS and press

Enter.

The ALARMS AND STATUS display (Figure 4-2) will appear on the screen

describing the status of the common equipment and each of the E1 ports

(lines), plus the status of the DTE leads and the current rate of the DTE

port.

Major 01/01/90 04:58:17 Unit:

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: NET : 1 (114)

Network 15 Minute UAS Major Threshold Exceeded

Digital Link DL3800E SR 2.00.00 NODE 7: 01/01/90 05:55:07 MJ

SELECTED DEVICE ADDRESS: 7.00.000 NAME:

NET : 2 (114)

CURRENT ALARMS AND STATUS ITEMS

Exit Repeat

Common equipment status: No Ext Clk, Primary Clk, No Net Sync

Network ports:

PORT 1: LOS, RED, Active, OOF MN, UAS 15 MIN MJ Relative delay of 0.000 ms

PORT 2: LOS, RED, Active, OOF MN, UAS 15 MIN MJ Relative delay of 0.000 ms

PORT 3: BPV MN, OOF MN, BPVS 15 MIN MN

PORT 4: BPV MN, OOF MN, BPVS 15 MIN MN

PORT 5: LOS, RED, UAS 15 MIN MJ

PORT 6: LOS, RED, UAS 15 MIN MJ

PORT 7: LOS, RED, UAS 15 MIN MJ

PORT 8: LOS, RED, UAS 15 MIN MJ

RS449/X.21 port: DSR ON

Current RS449/X.21 port rate = 3.952 Mbits/sec

Figure 4-2 ALARMS AND STATUS MENU

Following are the Alarm and Status items (severity) that may appear. The

Common Equipment alarms and status will appear first, followed by the

Network and the DTE alarms and status.

Table 4-2 3800E Alarm Descriptions

ALARM

NETWORK

DESCRIPTION

LOS

Loss of Signal -- Net Port does not detect

any E1 pulses

LOF

Loss of Frame - Net Port does not detect a

valid E1 framing format

Terminal Interface

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Table 4-2 3800E Alarm Descriptions

ALARM DESCRIPTION

AIS DET

Alarm Indication Signal Detected — Net

Port detects an unframed continuous

stream of binary ones.

AIS

Alarm Indication Signal — Not used.

YEL Det

Yellow Alarm (RAI — Remote Alarm

Indication) Detected. #Net Port detects the

presence of an RAI.

YEL

Yellow Alarm (RAI) - Net Port transmits a

Yellow Alarm (RAI) when receiving an AIS,

LOS, or LOF.

Failed Signal

Xmt Failed

Not used.

User Line Lpbk

User Line Loopback – Net Port in a Line

Loopback. Enabled by you under the Tests

menu.

User Payload Lpbk

User Payload Loopback – Net Port in a

Payload Loopback. Enabled by you under

the Tests menu.

HW Line Lpbk

HW Payload Lpbk

Remote Lpbk

Not used.

A loopback is occurring on the net lines or

on the remote unit.

*Active

Net Port is Active. This indicates that the

Net Port is part of the bundle passing data

to and from the DTE port.

Not Active

Net Port is Inactive. This indicates that the

Net Port has been removed from the

bundle and is no longer passing data to

and from the Data Port.

Excessive Delay

The Net Port has exceeded the 31ms

relative delay.

Set Code Detected

Reset Code Detected

CRC Threshold

The Net Port has detected a Loop code

sent from the Network.

Net Port has detected a Loop down code

sent from the Network.

Net Port has exceeded the CRC Threshold.

4-6

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Table 4-2 3800E Alarm Descriptions

ALARM DESCRIPTION

SES Threshold

Net Port has exceeded the Severely

Errored Second Threshold.

UAS Threshold

Net Port has exceeded the Unavailable

Second Threshold.

BPV MN/MJ

Net Port has declared a Bipolar Violation

Major or Minor Alarm.

OOF MN/MJ

Net Port has declared an Out Of Frame

Major or Minor Alarm.

BPVs 15 Min. MN/MJ

CRCs 15 Min. MN/MJ

ES 15 Min. MN/MJ

SES 15 Min. MN/MJ

UAS 15 Min. MN/MJ

BPVs 24 Hr MN/MJ

CRCs 24 Hr MN/MJ

ES 24 Hr MN/MJ

SES 24 Hr MN/MJ

UAS 24 Hr MN/MJ

Net Port has declared a Bipolar Violation

15 minute Major or Minor Alarm

Net Port has declared a CRC 15 minute

Major or Minor Alarm

Net Port has declared a Errored Second

15 minute Major or Minor Alarm

Net Port has declared a Severely Errored

Second 15 minute Major or Minor Alarm.

Net Port has declared a Unavailable

Second 15 minute Major or Minor Alarm.

Net Port has declared a Bipolar Violation

24 Hour Major or Minor Alarm.

Net Port has declared a CRC 24 Hour

Major or Minor Alarm.

Net Port has declared a Errored Second

24 Hour Major or Minor Alarm.

Net Port has declared a Severely Errored

Second 24 Hour Major or Minor Alarm.

Net Port has declared a Unavailable

Second 24 Hour Major or Minor Alarm.

COMMON EQUIPMENT

External Alarm

An External Alarm has been detected. This

alarm is based on the External Alarm

contacts on the back panel.

Proc Restart

Unit has rebooted.

RAM Test Fail

This occurs if the unit’s RAM does not pass

the memory test which occurs at startup.

Terminal Interface

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Table 4-2 3800E Alarm Descriptions

ALARM

DESCRIPTION

ROM Checksum Fail

This occurs if the checksum for the code

image stored in ROM does not match that

expected.

No Ext Clk

No clock detected on the External Clock

DB-- 9 connector on the back panel.

Primary Clock

Secondary Clk

The set primary receive clock source is

now providing the network receive clock.

The set secondary receive clock source is

now providing the network receive clock.

(Occurs if the primary source has been

lost).

Internal Clk

Sync

Loss of Internal Clock.

Net 1 -- Net Port 1 is the network receive

clock source.

Sync

Net 2 -- Net Port 2 is the network receive

clock source.

Sync

Net 3 -- Net Port 3 is the network receive

clock source.

Sync

Net 4 -- Net Port 4 is the network receive

clock source.

Sync

Net 5 -- Net Port 5 is the network receive

clock source.

Sync

Net 6 --- Net Port 6 is the network receive

clock source.

Sync

Net 7 -- Net Port 7 is the network receive

clock source.

Sync

Net 8 -- Net Port 8 is the network receive

clock source.

No Net Sync

Shows all port are down. More

specifically, if a network clock cannot be

sourced from any port.

DTE

HSSI Channel Lpbk

User Lpbk

A HSSI hardware loopback has been set.

The DTE/Network loopback has been set.

A V.35 hardware loopback has been set.

V.35 LT Lpbk

4-8

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Table 4-2 3800E Alarm Descriptions

ALARM DESCRIPTION

DTE Loss

The signal indicating DTE presence has

been lost.

DTR On

RTS On

RLB On

The V.35 DTR signals is present.

The V.35 RTS signal is present.

The V.35 DTE Remote Loopback signal has

been set.

LT On

The V.35 LT signal is present.

The HSSI TA signal is present.

The HSSI LA signal is present.

The HSSI LB signal is present.

The V.35 DSR is asserted.

The V.35 CTS signal is asserted.

The V.35 RLSD signal is asserted.

The V.35 TM signal is asserted.

The HSSI CA signal is asserted.

Not used

TA On

LA On

LB On

DSR On

CTS On

RLSD On

TM On

CA On

LC On

Line crossed

E1 network lines are crossed.

Terminal Interface

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NOTE: Status display will read ACTIVE, if the DL3800E unit is in

Inverse Mux mode and receiving I-Framing on the E1 without Blue,

Yellow, or Red Alarms or Major Alarm Thresholds being exceeded.

If the E1 Network Configuration is set to NEVER USE and a good E1

is connected, the Alarm & Status display will read NOT USED.

In Single DSU Mode, the DL3800E unit is Active if it is receiving

valid E1 pulses from the network without Blue, Yellow, or Red Alarms

or Major Alarm Thresholds being exceeded and 1) if, in HSSI mode,

the TA must be asserted or 2) if, in non-HSSI mode, you must select

DTR or RTS.

A Blue, Yellow, or Red Alarm or the exceeding of Major Alarm

Thresholds will cause the E1 to be taken out of service.

4-10

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Statistics

This menu allows you to access the performance STATISTICS SUBMENU

of any E1 port. Highlight STATISTICS in the INVERSE MUX MAIN

MENU, and press the Enterkey. The STATISTICS MENU appears

(Figure 4-3).

Major 01/01/90 04:58:17 Unit:

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: NET : 1 (114)

Network 15 Minute UAS Major Threshold Exceeded

NET : 2 (114)

Digital Link DL3800E

SELECTED DEVICE ADDRESS:

SR 2.00.00 NODE 7: 01/01/90 05:55:07 MJ

7.00.000 NAME:

STATISTICS MENU

Exit

NETWORK 1 STATISTICS

NETWORK 2 STATISTICS

NETWORK 3 STATISTICS

NETWORK 4 STATISTICS

NETWORK 5 STATISTICS

NETWORK 6 STATISTICS

NETWORK 7 STATISTICS

NETWORK 8 STATISTICS

Figure 4-3 STATISTICS SUBMENU

Terminal Interface

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To view the performance statistics of any one E1 port, highlight that port

and press Enter. The NET STATISTICS for that port (Figure 4-4) will

appear on the screen.

Figure 4-4 NET STATISTICS MENU

This screen displays the selected port’s E1 performance statistics for the

current 15-minute interval and for the past 48-hour interval. The

performance statistics for the first 24 hours are in both accumulative form

and in 15-minute intervals. The statistics for the second 24 hours are only

in accumulative form. It also allows you to clear the display and reset the

counters. For the DL3800E unit, the E1 statistics displayed are BPV, EB, FE,

ES, SES, BBE, UAS, EFS, ESR, SESR, and BBER.

To view additional pages with this set of performance data, press the

Cursor DOWN ARROW, or to view the previous page, press the Cursor UP

ARROW.

Additional NET STATISTICS are presented in subsequent screens. To view

additional screens with this same set of performance data, press the tab key

or the Cursor right and left arrow keys until the next field is highlighted,

then press Enter. Continue to press Enterwith the NEXT field

highlighted to view all the screens.

This screen contains NET STATISTICS snapshots at 15-minute intervals.

4-12

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DIGITAL LINK DL3800E SR 3.00.22 NODE

09/20/00 03:55:17 MJ

SELECTED DEVICE ADDRESS:

NET STATISTICS - PORT 1

CURRENT SECONDS: 563

1.00.000 NAME:

Exit Repeat Clear

PAST INTERVALS: 192

Page 1

ERROR-FREE SECONDS: 100.0%

BBER: 0.0%

ESR:

0.0%

SESR:

0.0%

BPV

SES

BBE

UAS

CURRENT

CUMULATIVE 1

CUMULATIVE 2

03:30-03:45

03:15-03:30

03:00-03:15

02:45-03:00

02:30-02:45

Figure 4-5 Additional NET STATISTICS

Table 4-3 NET Statistics Items

Parameter

Definition

EFS

Error Free Seconds (EFS) is calculated whenever ESR is calculated, and is the simple

percentage complement of ESR: EFS = 100.0 - ESR. When there have been UAS in

the statistics history for the past 24 hours, then EFS is set at 100%.

ESR

Errored Second Ratio (ESR) is the ratio of ES to total seconds in available time during

a fixed measurement interval. The fixed interval is the last 24 hours before the current

15-minute interval. When there have been UAS in the statistics history for the past 24

hours, then ESR is set at 0%.

SESR

BBER

Severely Errored Second Ration (SESR) is the ratio of SES to total seconds in

available time during a fixed-measurement interval. The fixed interval to be used is

the last 24 hours before the current 15-minute interval. When there have been UAS

in the statistics history for the past 24 hours, then SESR is set at 0%.

Background Block Error Ratio (BBER) is the ratio of errored blocks to total blocks

during a fixed-measurement interval, excluding all blocks during SES and unavailable

time. The fixed interval is equal to the last 24 hours before the current 15-minute

interval.

Terminal Interface

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Table 4-3 NET Statistics Items (Continued)

Parameter

Definition

BPV

This display provides the number of Bipolar Violations (BPVs) that have occurred

during the accumulation period. A total of 15430 BPVs in a 10-second sliding

window (approximately 10-3) will create a Major Alarm and 916 BPVs in a

600-second sliding window (approximately 10-6) will create a Minor Alarm.

A Frame Error (FE) is declared when two out of four consecutive framing bits are in

error. Typically, an FE indication will be accompanied by a significant number of

payload data bit errors. This display provides the number of FEs that have occurred

in the accumulation period.

EB/CV

An Errored Block (EB) is a block in which one or more bits are in error. The EB if

therefore equivalent to the Code Violation (CV) count calculated and displayed in the

previous versions of the DL3800E unit. This count allows you to monitor the rate of EB

faults on a line that is unavailable.

EBs are counted in the unavailable state; ES, SES, and BBE are not counted in the

unavailable state.

An Errored Second (ES) is a one-second period with one or more errored blocks (such

as one or more CRC4 errors) or an Out Of Frame (OOF). This display provides the

number of ESs that have occurred in the accumulation period. ESs are not

accumulated during UAS.

SES

Severely Errored Seconds (SES) is a one-second period which contains 30% or more

errored blocks or at least one severely disturbed period (SDP). An SDP is present if

either a LOS, AIAS, or LOF occurs.

Since there are 1000 blocks per second, an SES is a one-second period which

contains either a combination of 300 or more CRC4 errors, an OOF, or at least one

of the following: LOS, AIS, or LOF. This requirement is a slight change from the prior

DL3800E unit SES definition, which required 320 or more CRC4 errors or LOS, AIS,

or LOF. SESs are not accumulated during UAS.

BBE

A Background Block Error (BBE) is an errored block not occurring as part of an SES.

A BBE is calculated and displayed as a raw count of non-SES EBs. The count is

updated at the end of every measurement second excepting any second that is an

SES. The updated count is discarded for all UAS.

4-14

DL3800E Inverse Multiplexer User’s Guide — July 9, 2001

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Table 4-3 NET Statistics Items (Continued)

Parameter

Definition

UAS

Unavailable Seconds. This display provides the number of UAS that have occurred in

the accumulation period. At the onset of 10 consecutive SES events, a period of

unavailable seconds begins. These 10 seconds are part of the unavailable seconds

count. At the onset of 10 consecutive non-SES events, a new period of available time

begins. These 10 seconds are part of available time.

UAS occurs as soon as a Red Alarm is invoked (such as after two seconds of LOS.)

ES, SES, and BBE are not counted during unavailable time. Rate parameters ESR,

SESR, and BBER are the ratio of the fault-seconds count to the total seconds in

available time.

Event History

Use this screen to review and clear the DL3800E unit alarm and status

history.

To view the EVENT HISTORY, move the highlight bar to EVENT HISTORY

in the NODE MAIN MENU, and press Enter. Use the up and down keys

to move to the next or previous page of the EVENT HISTORY MENU.

Terminal Interface

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Table 4-4 Alarm Level

Alarm Parameter Definition

Alarm Level:

Major

Minor

Idled

Service affecting

Needs attention, not yet service affecting

Alarm condition has expired

Status

Non-service-affecting event

Date and Time

Address

Date and time of the occurrence or expiration of the alarm/state

The address is the physical location

Device

The device reporting the status and alarm condition (Unit #), and the type of device

(NET, DTE, or NODE)

Event Code

Description

Number designation for type of alarm or status condition. This number will be

useful when contacting the factory

Describes the event

To clear the report of all History Events, move the highlight bar to CLEAR

HISTORY and press Enter. Figure 4-6 is an example.

Major 01/01/90

17:56:47

Unit: 1NET : 2(33)

Unit: 1NET : 2(13)

Loss of Frame

Idled 01/01/90

17:56:58

Loss of Frame Idled

DIGITAL LINK DL3800E SR 2.00.000 NODE 7:HOME 01/01/90

03:14:54 MN SELECTED DEVICE ADDRESS: 7.00.000NAME:HOME

EVENT HISTORY

Idled

Exit

Repeat Clear History

Page 1

01/01/9009:02:10Unit 1NET 2 (29)

01/01/9009:02:06Unit 1NET 2 (30)

Yellow Signal Detected Idled

Major

Status

Idled

Minor

Yellow Alarm

01/01/9008:58:09Unit 1NET 2 (29)

Yellow Signal Detected

01/01/9008:58:01Unit 2NET 3 (29)

Yellow Signal Detected Idled

01/01/9008:56:24Unit 1Node

ROM Checksum Failed

(36)

Figure 4-6 EVENT HISTORY MENU

4-16

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Configuration

The CONFIGURATION MENU item provides access to a series of

submenus to configure various parameters of the unit, DTE, and network.

Highlight Configurationin the INVERSE MULTIPLEXER MAIN MENU

and press Enterto access the CONFIGURATION MENU. See Figure 4-7.

Major 01/01/90 04:58:17 Unit:

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: NET : 1 (114)

Network 15 Minute UAS Major Threshold Exceeded

DIGITAL LINK DL3800E SR 2.00.00 NODE 7: 01/01/90 05:55:07 MJ

7.00.000 NAME:

NET : 2 (114)

SELECTED DEVICE ADDRESS:

CONFIGURATION MENU

Exit

Unit

DTE

Network

Network Thresholds

SAVE configuration

Figure 4-7 CONFIGURATION MENU

To access any of the configuration submenus, highlight the desired item

and press the Enter key. The following are samples and descriptions of

the submenus that can be accessed from the CONFIGURATION MENU.

Unit Configuration

Highlighting UNITand pressing the Enterkey accesses the UNIT

CONFIGURATION MENU shown in Figure 4-8. The configurable items

and options are described in Table 4-5.

The following parameters can be set or changed for the Node: DATE,

TIME, ALARM ENABLE, AUTOMATIC BACKUP, FRONT PANEL,

PERMIT SELECT DEVICE ACCESS FROM REMOTE, UNIT NUMBER,

UNIT NAME and LOCAL TERMINAL BAUD RATE, BITS/PARITY, STOP

BITS, X-ON/X-OFF and MULTIDROP MODE. HARDWARE, SOFTWARE

and MIB REVISIONS are view-only items and cannot be changed.

Terminal Interface

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DIGITAL LINK DL3800E SR 3.00.22 NODE

08/27/00 00:54:47 MAJOR

SELECTED DEVICE ADDRESS: 1.00.000 NAME:

UNIT CONFIGURATION

DATE: 08/27/00

Exit Confirm

TIME: 00:54:38

ALARM ENABLE: Disabled

AUTOMATIC BACKUP: 5 minutes after a database change.

FRONT PANEL: On

PERMIT SELECT DEVICE ACCESS FROM REMOTE:

UNIT NUMBER:

UNIT NAME:

SOFT SERIAL #: 1389031127991

HARDWARE REVISION: H SOFTWARE REVISION: 3.00.22

MIB REVISION: 1.10 January 10 2000

TERMINAL BAUD RATE: 9600

TERMINAL #BITS AND PARITY: 8 bits, No parity

TERMINAL STOP BITS: 2 bits

(DOWNLOADED)

Figure 4-8 UNIT CONFIGURATION MENU

Table 4-5 Node Configuration Options

Option

Action

Date

Move the highlight bar to Date, and enter a valid date with the format

MM/DD/YY, and press the Enter key.

YY:

1-12 month

1-31 date

0-99 year

Time

Move the highlight bar to Time, and enter a valid time with the format

hh:mm:ss, and press the Enter key.

HH 0-23 hours

MM 0-59 minutes

0-59 seconds

Alarm Enable

This option allows you to ENABLE or DISABLE the DL3800E unit External

Alarms. Highlight ALARM ENABLE and, using the space bar, toggle

between ENABLED and DISABLED until the desired choice appears.

Automatic Backup

This feature allows you to backup the database to the EEPROM

automatically, at certain intervals, or manually. To change the present

backup mode, highlight Automatic Backup, and use the Space Bar to toggle

between the following choices: after every database change, 15 seconds,

30 seconds, 1 minute, five minutes after each change, or Off (must change

manually with Save Configuration).

4-18

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Table 4-5 Node Configuration Options

Action

Option

Front Panel

This feature enables (On) or disables (Off) your ability to make changes in

the configuration or run tests from the front panel display and buttons. To

change the Front Panel feature, highlight Front Panel, and use the Space Bar

to toggle between Off and On.

Permit Select Device

Access From Remote

This feature enables (Yes) or disables (No) the capability that allows you to

view and access the local configuration settings from the remote unit.

Unit Number

Move the Highlight bar to Unit Number, and enter a number between 1 and

9999. Note: Each unit must be set to a different number to allow remote

communication, and daisy chaining of multiple units. For example, if the

remote unit is set to the same number as the local unit, you will not be able

to access the remote unit.

Unit Name

Move the highlight bar to UNIT NAME and enter alphanumeric name of up

to 20 digits. Press Enter when finished.

Soft Serial Number

This feature allows you to view the local serial number.

If the remote unit is not software compatible with the soft serial number

feature, the Unit Configuration screen still displays the serial number field

but the information is incorrect. All the other information on the screen (for

example, node number, hardware revision number) is still accurate.

The soft serial number is preserved if you enter a “Reset Entire Node

Database to Factory Defaults” command.

Terminal Baud Rate

This feature selects the terminal baud rate. To set or change the baud rate,

move the highlight bar to Terminal Baud Rate, and press the Space Bar to

toggle between the options: 300, 600, 1200, 2400, 4800, 9600, 19,200,

and 38,400. (Default - 9600)

Terminal Parity & Bits

This feature selects the terminal parity and Bits. To set or change the local

terminal parity and Bits, move the highlight bar to Terminal Parity & Bits,

and press the Space Bar to toggle between the options 7,8, None, Odd,

and Even. (Default - 8 None)

Terminal Stop Bits

Terminal XOn/XOff

This feature selects the terminal stop bit requirement. To set or change the

requirement, move the highlight bar to Terminal Stop Bits, and press the

Space Bar to toggle between the options 1, 1.5, or 2. (Default - 2)

This allows you to enable or disable the XOn/XOff Flow Control feature.

With the Flow Control feature On, the terminal can request that the unit quit

sending data when its buffers are full. To set or change this feature, move

the highlight bar to Terminal XOn/XOff, and use the Space Bar to select

choice. (Default - On)

Terminal Interface

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Table 4-5 Node Configuration Options

Action

Option

Terminal Multidrop Mode

If the terminal is connected to more than one DL3800E, it must be in

Multidrop Mode. If it is connected to only one unit, this feature can be

disabled. When it is disabled, the system starts up directly, without you

having to log in. To change this configuration, move the highlight bar to

Terminal Multidrop Mode, and use the Space Bar to toggle between the

options Enabled, and Disabled. (Default - Enabled)

To update the node database with all the changes made, move the

highlight bar to CONFIRM and press Enter. Changes can be confirmed

after each change, or, after all changes have been made. This completes the

node configuration. To abort the changes, move the highlight bar to EXIT

and press Enterbefore confirming the changes. (Note: If the terminal

speed, parity or stop bits are changed, it is necessary to change the

terminal before continuing.)

DTE Configuration

This menu allows you to configure certain parameters of the DTE,

including the interface type, clock source, status of leads, and loss criteria.

To access the DTE CONFIGURATION MENU, move the highlight bar to

DTE CONFIGURATION in the CONFIGURATION MENU, and press

Enter.

Figure 4-9, 4-10, 4-11, and 4-12 are examples of the DTE Configuration

Interface Menus (V.35, RS-449, X.21, and HSSI), and Table 4-6 describes the

menu items.

4-20

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DIGITAL LINK DL3800E SR 3.00.22 NODE

09/20/00 03:55:47 MJ

SELECTED DEVICE ADDRESS: 1.00.000 NAME:

DTE CONFIGURATION

Exit Confirm

DTE INTERFACE:

DTE TOGGLE INTERVAL:

V.35/RS-449/X.21 OPTIONS:

V.35

2 sec

CLOCK:

SCTE Tx Clock: INVERTED Rx Clock: NORMAL

RLSD MODE:

DSR MODE:

CTS MODE:

AUTOMATIC

MODE:

DTE LOSS DETECTION: NONE

HSSI OPTIONS:

MODE:

DTE LOSS DETECTION:

Figure 4-9 DTE CONFIGURATION MENU (V.35)

DIGITAL LINK DL3800E SR 3.00.22 NODE

08/27/00 00:52:37 MJ

SELECTED DEVICE ADDRESS: 1.00.000 NAME:

DTE CONFIGURATION

Exit Confirm

DTE INTERFACE:

DTE TOGGLE INTERVAL:

V.35/RS-449/X.21 OPTIONS:

RS-449

None

CLOCK:

SCTE Tx Clock: NORMAL

AUTOMATIC

Rx Clock: NORMAL

RLSD MODE:

DSR MODE:

CTS MODE:

AUTOMATIC

MODE:

AUTOMATIC

DTE LOSS DETECTION: RTS

HSSI OPTIONS:

MODE:

DTE LOSS DETECTION:

Figure 4-10 DTE CONFIGURATION MENU (RS449)

Terminal Interface

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DIGITAL LINK DL3800E SR 3.00.22 NODE

SELECTED DEVICE ADDRESS: 1.00.000 NAME:

You must confirm to save changes.

09/20/00 03:56:16 MJ

DTE CONFIGURATION

Exit Confirm

DTE INTERFACE:

X.21

DTE TOGGLE INTERVAL:

2 sec

V.35/RS-449/X.21 OPTIONS:

CLOCK:

SCTE Tx Clock: INVERTED Rx Clock: NORMAL

AUTOMATIC

RLSD MODE:

DSR MODE:

CTS MODE:

MODE:

DTE LOSS DETECTION: NONE

HSSI OPTIONS:

MODE:

DTE LOSS DETECTION:

Figure 4-11 DTE CONFIGURATION MENU (X.21)

DIGITAL LINK DL3800E SR 3.00.22 NODE

1: 08/27/00 00:53:38 MAJOR

SELECTED DEVICE ADDRESS: 1.00.000 NAME:

DTE CONFIGURATION

Exit Confirm

DTE INTERFACE:

DTE TOGGLE INTERVAL:

V.35/RS-449/X.21 OPTIONS:

CLOCK:

HSSI

2 sec

Tx Clock:

Rx Clock:

RLSD MODE:

DSR MODE:

CTS MODE:

MODE:

DTE LOSS DETECTION:

HSSI OPTIONS:

MODE:

AUTOMATIC

DTE LOSS DETECTION: TA

Figure 4-12 DTE CONFIGURATION MENU (HSSI)

4-22

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Table 4-6 DTE CONFIGURATION MENU Options

Parameter

Description/Action

DTE Interface

This allows you to select V.35, RS449, X.21 or HSSI as the DTE Interface.

To change the present DTE Interface, use the UP and DOWN ARROW

keys to highlight DTE Interface. Use the Space Bar to toggle between

V.35, RS-449, X.21, and HSSI until the desired choice appears. Highlight

Confirm, and press the Enter key to confirm the change. (Default - V.35)

DTE Toggle Interval

This parameter determines the length of the interval during which the DTE

lead indicating signal presence is deasserted when a change in the DTE

data rate occurs.

The DTE data rate changes if a network port goes or is taken out of

service, or if a network loopback is set. The DTE lead toggled is RLSD in

V.35, RS449, and X.21 modes, and CA in HSSI mode. This toggle

interval is needed by some DTE devices to allow resynchronization to the

new data rate. THe interval may be set to NONE, 0.5, 1.0, 1.5, or 2.0

seconds. (Default - NONE)

Clock

This item allows you to enable either the SCT or SCTE leads, and to set the

transmit (Tx), and receive (Rx) to Normal or Inverted mode.

Note: In x.21 mode SCT corresponds to the S clock signal and SCTE to

the x clock signal.

To set the DTE Clock parameters, use the UP and DOWN ARROW keys to

highlight the configurable Clock items, and use the Space Bar to toggle

between the selections until the desired choice appears. The options are

SCT or SCTE, Tx Normal or Inverted, and Rx Normal or Inverted. When

the desired selection is in the display, highlight Confirm, and press the

Enterkey to confirm the change (Default - SCTE, Tx Normal, Rx Normal)

RLSD (Receive Line Signal

Detector)

This allows you to Assert, DeAssert, or set to Automatic the RLSD leads.

To change or set the RLSD lead status, use the UP and DOWN ARROW

keys to highlight RLSD, and use the Space Bar to toggle between Assert,

DeAssert, or Automatic until the desired choice appears. Highlight

Confirm, and press the Enter key to confirm the change. (In Automatic

mode, the 3800E places the signal high when you have a clear signal

from the network, indicating the E1 is up and running.)

In X.21 mode, RLSD refers to the X.21 signal called Indication. (Default -

Automatic)

Terminal Interface

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Table 4-6 DTE CONFIGURATION MENU Options (Continued)

Parameter

Description/Action

DSR (Data Set Ready)

This allows you to Assert, DeAssert, or set to automatic the DSR leads.

To change or set the DSR lead status, use the UP and DOWN ARROW

keys to highlight RLSD, and use the Space Bar to toggle between Assert,

DeAssert, or Automatic until the desired choice appears. Highlight

Confirm, and press the Enter key to confirm the change. (In Automatic

mode, the 3800E places the signal high when the DTE is sending the

associated signal lead DTR.) (Default - Automatic)

CTS (Clear To Send)

This allows you to Assert, DeAssert, or set to Automatic the CTS leads.

To change or set the CTS lead status, use the UP and DOWN ARROW

keys to highlight CTS, and use the Space Bar to toggle between Assert,

DeAssert, or Automatic until the desired choice appears. Highlight

Confirm, and press the Enter key to confirm the change. (In Automatic

mode, the 3800E places the signal high when the DTE is sending the

associated signal lead RTS.) (Default-Automatic)

TM (Test Mode)

This allows you to Assert, DeAssert, or set to Automatic the TM leads.

To change or set the TM lead status, use the UP and DOWN ARROW keys

to highlight TM, and use the Space Bar to toggle between Assert,

DeAssert, or Automatic until the desired choice appears. Highlight

Confirm, and press Enterto confirm the change. (In Automatic mode, the

3800E places the signal high when the DCE’s signal leads for enabling

tests are placed high by the DTE.) (Default - Automatic)

DTE Loss Detection

Sets the criteria by which a DTE Loss Of Signal will be detected.

In X.21 mode RTS refers to the X.21 signal called Control.

To change or set the DTE LOS criteria, use the UP and DOWN ARROW

keys to highlight DTE LOSS DETECTION, and use the Space Bar to toggle

between the choices: RTS, DTR, and None. When the desired choice is

shown, highlight Confirm, and press Enter to confirm the change.(In

x.21 mode, RTS refers to the x.21 signal called Control). (Default - RTS)

The following entries must be added:

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DL3800E Inverse Multiplexer User’s Guide — July 9, 2001

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Table 4-6 DTE CONFIGURATION MENU Options (Continued)

Description/Action

Parameter

CA MODE

Allows user to set the CA lead to ASSERT, DEASSERT, or AUTOMATIC

when the interface is set to HSSI.

This setting is only accessible when the interface type is set to HSSI. To

change or set the CA lead status, use the UP and DOWN ARROW keys to

highlight CA and use space bar to toggle between ASSERT, DESSART, or

AUTOMATIC until the desired choice appears. Highlight CONFIRM and

press Enter to confirm the change. (In AUTOMATIC mode, the 3800

places the signal high when there is one or more active network signals.)

(Default - AUTOMATIC)

DTE LOSS DETECTION

Allows users to set the criteria by which a DTE Loss of Signal will be

detected when the interface is set to HSSI.

This setting is only accessible when the interface type is set to HSSI. To

change or set the DTE LOS criteria, use the UP and DOWN ARROW keys

to highlight DTE LOSS DETECTION and use the space bar to toggle

between TA and NONE until the desired choice appears. Highlight

CONFIRM and press Enter to confirm the change. (Default - TA)

Network Configuration

This submenu allows you to configure various Network parameters. The

configurable parameters include CRC4, TSLOT16, and National Bits.

To access the NETWORK CONFIGURATION MENU, move the highlight

bar to NETWORK CONFIGURATION in the CONFIGURATION MENU

and press Return.

The NETWORK CONFIGURATION MENU will be slightly different

depending on which version DL3800E unit is being used. Figure 4-13

shows the NETWORK CONFIGURATION MENU. Table 4-7 describes the

various parameters included.

Terminal Interface

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Major 01/01/90 04:58:17 Unit:

NET : 2 (114)

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: NET : 1 (114)

Network 15 Minute UAS Major Threshold Exceeded

DIGITAL LINK DL3800E SR 2.00.00 NODE 7:

7.00.000 NAME:

01/01/90 05:55:07 MJ

SELECTED DEVICE ADDRESS:

NETWORK CONFIGURATION

Exit Confirm

PORT

ALARM

REPORT

MASK

REPORT

MASK

ACTIVE/RESTORE CRC4

Use w/auto restoreENABLE DATA

TSLOT16

Never Use

ENABLE

DATA

Never UseENABLE DATA

Use w/auto restoreENABLE DATA

Never Use

ENABLE

DATA

Primary Clock Source:

Secondary Clock Source: Xmt: Net

Xmt: Int

Rcv: Net 1

Rcv: Net 2

DSU MODE: Inverse Mux (Standard operation)

Suppress Yellow Det.: Disabled

Second Error restoral interval: Immediate

Hardware Revision:

Port 3&4: --

Port 5&6: -- Port 7&8: --

Figure 4-13 Network Configuration Screen

Table 4-7 NETWORK CONFIGURATION MENU Options

Description/Action

Parameter

Alarm

This item allows you to enable (Report) or disable (Mask) the DL3800E unit

from reporting alarms or sending SNMP traps from any of the individual E1

network ports.

To change the present Alarm mode, use the UP and DOWN ARROW keys

to highlight the Alarm item in the appropriate line for the desired port, and

use the Space Bar to toggle between Report and Mask. Highlight Confirm,

and press the Enter key to confirm any change. (Default - Mask)

Active/Restore Mode

Selects the Active/Restore Mode for each of the E1 network ports.

To change the present mode, use the UP and DOWN ARROW keys to

highlight the Active/Restore Mode option for the desired port, and use the

Space Bar to toggle between the following selections until the desired choice

appears: use w/auto restore (failed line is restored automatically when

problem is solved); use w/manual restore (user must manually restore line);

Never Use (never mux data onto this line); Install/Test only (always mux

data onto this line, even when it’s bad). (Default - Never Use)

CRC4

Allows CRC4 coding to be enabled or disabled

4-26

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Table 4-7 NETWORK CONFIGURATION MENU Options (Continued)

Description/Action

Parameter

TSLOT16

Allows you to select between DATA and FLAG. If DATA is selected, timeslot

16 will be used for payload data. If FLAG is selected, timeslot 16 will not be

used for payload and will be stuffed with the value 7E hex.

NOTE: E1 links are not truly independent. This field is selectable on a per-

E1 link basis. When the DL3800E unit treats the set of E1 links as a whole.

If only one E1 link is selected for FLAG, then the DTE bandwidth is reduced

to an amount corresponding to all links having been set for a time slot loss.

Primary Clock Source

This allows you to select either the Primary Clock Source, transmit (xmt), and

receive (rcv) for the individual E1 network ports.

To change the present Primary Clock Source, use the UP and DOWN

ARROW keys to highlight either Xmt or Rcv on the Primary Clock Source

line, and use the Space Bar to toggle between the choices. For Xmt

(transmit) the choices are Network (NET), External (EXT), and Internal (INT).

For Rcv (receive) the choices are Net-1 through Net 8 (each of the individual

E1 network ports), or Auto (the unit selects the best source).

The DL3800E unit can use several sources to generate the transmit clock.

The Internal selection uses an oscillator within the DL3800E, the Network

setting recovers the clock from the selected E1 line, and the External setting

recovers the clock from the dB-9 Ext. Clock connector on the rear panel of

the unit. Typically, the clock source on one side of the link is set to Internal,

and the other is set to Network. (Default - Smt: Int., Rcv: Net 1)

Secondary Clock Source

This allows you to select either the Secondary Clock Source, transmit (xmt),

and receive (rcv) for the individual E1 network ports.

To change the present Secondary Clock Source, use the UP and DOWN

ARROW keys to highlight either Xmt or Rcv on the Secondary Clock Source

line, and use the Space Bar to toggle between the choices. For Xmt

(transmit), the choices are Network (NET), External (EXT), and Internal (INT).

For Rcv, the choices are Net-1 through Net 8 (each of the individual E1

network ports) or Auto (the unit selects the best source) until the desired

choice appears. (Default - Xmt: Int, Rcv: Net2)

DSU Mode

This allows youyou to set the DL3800E unit up as a DSU, with one DTE, and

one Network port.

To change the present DSU Mode level, use the UP and DOWN ARROW

keys to highlight the DSU Mode item, and use the Space Bar to toggle

between the following selections until the desired choice appears: Inverse

MUX (standard operation) or Single E1 DSU. Highlight Confirm, and press

the Enter key to confirm the change. (Default-Inverse Mux)

Terminal Interface

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Table 4-7 NETWORK CONFIGURATION MENU Options (Continued)

Description/Action

Parameter

Suppress Yellow Detect

This item allows you to configure the unit to ignore or report RAI alarm

conditions.

To change the present Suppress Yellow Detect, use the UP and DOWN

ARROW keys to highlight the item, and use the Space Bar to toggle

between Enabled and Disabled until the desired choice appears. Highlight

Confirm, and press the Enter key to confirm the change. (Default -

Disabled)

Second Error Restoral

Interval

The second error restoral configuration is found on the Network

Configuration Screen on the DL3800E/3900s. Choices for configuration are

immediate, 5, 10, 15, 30 seconds and 1, 5, 10, 15 minutes. As seen from

previous discussions on fallback conditions, you should notice that it is

possible that an E1 will constantly go in and out of service on a flaky circuit.

Every time an E1 is taken out of service or put in-service this will

momentarily affect your traffic on the other E1s. In order to prevent this

problem second error restoral was created.

Second error restoral is a feature that will allow the Imux units to monitor a

bad E1 for a period of time after it has gone out of service and come back

on-line. Once an E1 has come back after the first out of service state has

occurred the Imux unit will monitor the E1 for the second error restoral

interval selected. If a second out of service state occurs during the

monitoring period the Imux unit will keep the E1 out of service (when the E1

is good again) for the SER time. Every time a new error occurs with in the

second error restoral period, when it is keeping the E1 out of service, will

restart the SER counter. Once the SER timer expires the E1 will be restored

and the process will start again. You can look SER like two strikes and your

out for E1s on Imux units.

Network Thresholds

This menu allows you to enable/disable the automatic FALLBACK feature

and set the various Network Alarm Thresholds that will cause the E1 lines

to automatically be taken out of service.

Figure 4-14 is an example of the NETWORK ALARM THRESHOLDS

configuration screen.

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Major 01/01/90 04:58:17 Unit:

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: NET : 1 (114)

Network 15 Minute UAS Major Threshold Exceeded

NET : 2 (114)

DIGITAL LINK DL3800E

SR 2.00.00 NODE 7: 01/01/90 05:55:07 MJ

SELECTED DEVICE ADDRESS: 7.00.000 NAME:

NETWORK ALARM THRESHOLDS

CONSECUTIVE THRESHOLDS

Exit Confirm

FALLBACK SECONDS

CRC SecondsDisabled10

SES Disabled10

Disabled10

UAS

INTERVAL THRESHOLDS

15 MINUTES

FALLBACK

Disabled

24 HOURS

MAJOR MINOR FALLBACK

MAJOR MINOR

BPV Err Sec(10E-3)

CRC Seconds

SES

UAS

100

Disabled10

Figure 4-14 Network Thresholds Configuration

Through the CONSECUTIVE THRESHOLDS section of this menu, you

disable or enable the fallback condition relating to the number of

consecutive seconds (from 1 to 100) in which a CRC, SES or UAS alarm

threshold is exceeded. To Enable or Disable the FALLBACK feature,

highlight the appropriate item, and use the space bar to select your choice.

To change the number of errored consecutive seconds that will cause that

E1 line to go out of service, highlight the appropriate item and press

Enter. When the highlight bar is blank, type in the number of seconds

desired.

NOTE: Default settings are shown in Figure 4-14

The INTERVAL THRESHOLDS section of this menu allows you to enable

or disable the FALLBACK feature. FALLBACK relates to the number of in-

error seconds (from 1 to 900) occurring in a 15-minute period, or the

number of in-error 15-minute intervals (from 1 to 96) occurring in a 24-

hour period that will cause a MAJOR or MINOR alarm. To Enable or

Disable the FALLBACK feature, highlight the appropriate item and use the

space bar to select your choice. To change the number of in error seconds

or 15-minute intervals that will cause a MAJOR or MINOR network alarm,

highlight the appropriate item and press Enter. When the highlight bar is

blank, type in the number desired.

Terminal Interface

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Save Configuration

This option allows you to manually back up the database to EEPROM at

any time. To Save Configuration and back up the database to EEPROM,

highlight the Save Configurationin the CONFIGURATION MENU, and

press the Enter key.

System Utilities

The SYSTEM UTILITIES MENU in the INVERSE MULTIPLEXER MAIN

MENU is used to access submenus in the DL3800E unit to configure

various system utilities and perform certain functions with the DL3800E.

These System Utilities include Software Download, Delete Entire Node

Configuration, Login Configuration, SNMP Configuration, and Save

Configuration.

To access the SYSTEM UTILITIES MENU, highlight System Utilitiesin

the INVERSE MULTIPLEXER MAIN MENU, and press the Enterkey.

Figure 4-15 is an example of the SYSTEM UTILITIES MENU that will

appear. To access any of the submenus or perform certain functions,

highlight that line item, and press the Enterkey.

Major 01/01/90 04:58:17 Unit:

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: NET : 1 (114)

Network 15 Minute UAS Major Threshold Exceeded

NET : 2 (114)

DIGITAL LINK DL3800E

SR 2.00.00 NODE 7: 01/01/90 05:55:07 MJ

SELECTED DEVICE ADDRESS:

7.00.000 NAME:

Exit

SYSTEM UTILITIES MENU

SYSTEM UTILITIES MENUExit

Software Download

DELETE Entire Unit Configuration

SNMP Configuration

SAVE Configuration

Figure 4-15 SYSTEM UTILITIES MENU

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Software Download

This selection is used to choose the desired mode for upgrading the

DL3800E unit software revision level via download if this option is

available. Highlight SOFTWARE DOWNLOAD in the SYSTEM UTILITIES

MENU and press Enter. The SOFTWARE DOWNLOAD MENU (Figure

4-16) appears on the screen.

DIGITAL LINK DL3800E SR 3.00.22 NODE

1: 08/27/00 00:55:24 MAJOR

SELECTED DEVICE ADDRESS:

DOWNLOAD NEW SOFTWARE

DOWNLOAD PROTOCOL: None

1.00.000 NAME:

Exit

Confirm

DOWNLOAD DESTINATION: Remote Unit

-- DOWNLOAD OPTIONS, LOCAL END --

IMMEDIATE SOFTWARE ACTIVATION: Enabled

RAM SOFTWARE OPTIONS: None

Figure 4-16 SOFTWARE DOWNLOAD MENU

NOTE: DL3800E units with different software versions may not support

all features available in the more recent version. It is recommended that

local and remote units have identical software versions installed. If

possible, both local and remote units should always be upgraded when

installing newer software versions.

The following equipment is required to download new software.

• A PC with a disk drive capable of reading an MS DOS binary file is

required. Quick Eagle Networks provides a 3.5 inch floppy formatted

for 1.4 Mb for downloading software.

• A terminal emulation program such as Procomm, Mirror, or Xtalk with

VT100 or ANSI emulation that supports one or all of the following:

• Motorola S-Records with ASCII Transfer

• Binary Image with Xmodem

• Binary Image with Kermit

Make the proper RS-232 connection between the PC and the DL3800E. A

DE-9 connector is pinned out on the DL3800E unit such that the use of a

null modem is not necessary. DE-9 to DB-25 adapters may be needed

depending upon the PC used.

Terminal Interface

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NOTE: The following steps are recommended before initiating the

download process.

• Disable all control lead dependencies (RTS, CTS, DCD, etc.)

• Disable XON/XOFF flow control.

• Disable DCD (Data Carrier Detect) aborts (especially on Procomm).

1. Copy the files off the floppy onto the hard drive on the PC. The

names of the files will vary in accordance with the current

software revision. The file name should look similar to the

following: V10xxxxx.RAM.

2. Start the emulation program on the PC and set it up match the

DL3800E unit comm port configuration. Default configuration for

the DL3800E unit is 9600 Baud, 8 bits, No parity, 2 stop bits.

Connect the PC serial port to the DL3800E unit COMM PORT.

3. If the DL3800E unit is set up for “Direct Terminal” configuration,

typing a Ctrl-Lwill refresh the screen. If it is set up for

multidrop mode, see “Log In/Log Off” on page 4-1 on how to Log

in to a unit.

4. Select the Software Downloadoption from the SYSTEM

UTILITIES MENU. On the SYSTEM UTILITIES MENU, scroll

down to where it says Noneand press the space bar until the

desired mode appears. Select CONFIRMand press Enteragain to

save the change. The DL3800E unit is now ready to receive a file.

5. Enter the file transfer mode on the terminal emulation program

and transfer the appropriate file. The file transfer will take at least

10 minutes at 9600 baud.

6. Once the file has downloaded, the DL3800E unit will take up to 30

seconds to reboot if the IMMEDIATE SOFTWARE ACTIVATION

feature is enabled. If any communications errors were

encountered, it may be necessary to perform this operation again.

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Software Download Options

Immediate Software Activation (Enable/Disable)

The IMMEDIATE SOFTWARE ACTIVATION mode is controlled from the

SYSTEMS UTILITIES/SOFTWARE DOWNLOAD MENU. When the

IMMEDIATE SOFTWARE ACTIVATION feature is enabled, the software

download (using MSR, Xmodem, Kermit, TFTP) is immediately activated

(that is, copied from RAM to FLASH and rebooted).

For consistency with the previous software version, IMMEDIATE=enabled

is the default setting. If the IMMEDIATE SOFTWARE ACTIVATION

feature is disabled, the software download (using MSR, Xmodem, Kermit,

TFTP) is not activated (that is, not copied from RAM to FLASH and not

rebooted).

You must activate the software at a later time by issuing a software

download activation command from the System Utilities/Download

Software/ RAM SOFTWARE OPTIONS selection field. When the software

activation command is executed, the system copies the software image

from RAM to Flash and reboots.

A system restart (power cycle) that occurs after the download, but before

the activation, will not activate the new software. Loss of power causes the

non-activated software download to be lost.

Download Destination (Local Unit, Remove Unit, Both Units)

This feature provides software to be loaded to either the local unit, the

remote unit, or both. Use of the Remote or Both option requires use of the

Xmodem or Kermit protocol.

A file image loaded to the remote unit is sent over the proprietary

IMUX Embedded Data Link (EDL). The EDL is available regardless of

the E1 line coding and framing.

To download to the Remote Unit, you do not log into the Remote;

instead you select the download destination using the Download

Destination field which allows a download to both units at once. It also

minimizes disruption to the terminal interface session when the

Remote Unit does an immediate software activation (which involves

that unit’s rebooting).

Terminal Interface

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RAM Software Options

RAM Software Options - Query RAM Software

This feature determines when a valid software image exists in RAM by

checking the CRC and image ID. The query indicates if the software can be

activated in the unit.

The following response messages are possible:

RAM Image is valid. - CRC is valid, Image ID is valid

RAM Image is active - no reboot necessary. - CRC is valid,

Image ID is valid, but images are identical.

RAM Image is invalid (Product ID Error) xxxxxx- CRC is valid,

Image ID is xxxxxx.

RAM Image is invalid (Size too small)- Header indicated the

code buffer is too small.

RAM Image is invalid (Size too big)- Header indicated the code

buffer is beyond its range.

RAM Image is invalid (CRC error)- CRC is invalid.

The DL3800E unit image ID is reserved for use in a future application.

This command does not activate the software if it is downloaded and is

pending activation, nor does it indicate the software revision of the

downloaded image.

Querying the Remote Unit is performed by first logging into the remote

unit from the Main Menu, then navigating to this menu.

RAM Software Options - Activate RAM Software

This feature activates downloaded software by copying the code from

RAM to FLASH and then rebooting the unit. If a valid (that is, Image ID

and CRC are valid) software image does not exist in RAM, the command

fails and a reboot will not occur.

An extended loss of power causes the non-activated software download to

be lost.

Modifying this setting in the Remote Unit is performed by first logging

into the remote unit from the Main Menu, then navigating to this menu.

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TFTP Software Download

If immediate software activation is enabled on the target unit, the software

is downloaded to the target unit, and is activated by copying the code from

RAM to FLASH and then rebooting.

A TFTP Software Download server is built into the DL3800E. This feature

allows you to do an TFTP transfer (using the SLIP/NMS port) to the unit

RAM. You issue the “Put” command to the unit to initiate the transfer. If

you specify the remote unit IP address, the local unit forwards the TFTP

packets to the remote unit.

Once the transfer is complete, activation is based on the setting of the

Immediate Software Activation feature with the following results:

• If Immediate Software Activation is disabled on the target unit, the

software is downloaded to the RAM of the target unit, but is not

activated and a reboot does not occur.

• If Immediate Software Activation is enabled on the target unit, the

software is downloaded to the RAM of the target unit, and is activated

by copying the code from RAM to FLASH memory and then rebooting.

The performance of the TFTP data transfer is limited by the speed of the

NMS/SLIP port, which has a maximum 38400 baud rate and the

Embedded Data Link if the transfer is going to the remote unit. Only the

“Put” TFTP server is functional; you cannot do a “Get” of the software

from the unit.

Ensure that you specify binary mode instead of ascii mode in the TFTP

client.

Delete Entire Unit Configuration (revert to factory config)

WARNING: This command will interrupt service.

Deleting the unit database causes the unit, and any other device's database

within that unit, to be reset to the factory default setting. All device names

will be erased, and all connections will be removed. The time and date,

however, will remain the same, and the node number will be set to

“0.00.00”.

As the warning states above, if there are any valid connections in the node,

execution of this command will interrupt service.

Terminal Interface

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To delete the entire unit configuration, select DELETE ENTIRE UNIT

CONFIGURATION from the SOFTWARE UTILITIES MENU, and press

Enter. Use the arrow keys to highlight the Desired Action field. Press the

space bar until RESET ENTIRE NODE DATABASE TO FACTORY

DEFAULTS appears in the field. The change must then be confirmed. Move

the highlight bar to CONFIRM, and press the Enterkey. Deleting the

entire node configuration puts all parameters back to their Factory Default

Settings.

From the SOFTWARE UTILITIES MENU (Figure 4-17 on page 4-36) you

may also perform the following functions:

• Delete RAM code and Revert to ROM code

• Restart Node Software

Major 01/01/90 04:58:17 Unit:

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: NET : 1 (114)

NET : 2 (114)

Network 15 Minute UAS Major Threshold Exceeded

DIGITAL LINK DL3800E SR 2.00.00 NODE 7: 01/01/90 05:55:07 MJ

SELECTED DEVICE ADDRESS:

7.00.000 NAME:

Exit

DELETE ENTIRE UNIT CONFIGURATION

DESIRED ACTION: None

DO YOU REALLY WANT TO DO THIS? PLEASE CONFIRM:

Confirm

Figure 4-17 SOFTWARE UTILITIES MENU

Delete RAM Code and Revert to ROM Code

To delete RAM code and revert to ROM code, select DELETE ENTIRE

UNIT CONFIGURATION from the SOFTWARE UTILITIES MENU, and

press Enter. Use the arrow keys to highlight the Desired Action field.

Press the space bar until DELETE RAM CODE AND REVERT TO ROM

CODE appears in the field. The change must then be confirmed. Move the

highlight bar to CONFIRM, and press Enter.

Restart Node Software

Restart Node Software resets the unit without powering down.

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To Restart Node Software, select DELETE ENTIRE UNIT

CONFIGURATION from the SOFTWARE UTILITIES MENU (Figure 4-17)

and press Enter. Use the arrow keys to highlight the Desired Action field.

Press the space bar until RESTART NODE SOFTWAREappears in the field.

Confirm the change. Move the highlight bar to CONFIRM, and press Enter.

This screen allows you to designate a NAME, PASSWORD and ACCESS

PRIVILEGE LEVEL for up to eight users.

When the unit is shipped, the factory defaults for username and password

are null. Pressing Enterbypasses both of these parameters until the first

name and password are entered.

To access the LOGIN CONFIGURATION MENU, move the highlight bar to

Figure 4-18 is an example of the LOGIN CONFIGURATION MENU.

DIGITAL LINK DL3800E SR 3.00.22 NODE

08/27/00 00:55:51 MJ

SELECTED DEVICE ADDRESS: 1.00.000 NAME:

Exit Confirm

PASSWORD

USER IDENTIFICATION

ACCESS TYPE(S)

Full access

Maintenance

Provisional

Full access

No access

1) Cole Porter

2) Arthur Fiedler

3) Louie Armstrong

4) Billie Holiday

12CP

Arty1

Satchmo

LadyDay

TERMINAL AUTOMATIC LOGOUT: Off. (Must use Logout to return to login prompt).

TELNET AUTOMATIC LOGOUT: 5 minutes after no keyboard activity.

Figure 4-18 LOGIN CONFIGURATION MENU

NOTE: Name and Password are case-sensitive

Terminal Interface

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Users must have Full Access class to view or change this screen.

The name and password can be any alphanumeric designation up to 16

characters in length. To enter a name or password, move the highlight bar

to the appropriate line and column, and type in the alphanumeric

designation. Move the highlight bar to CONFIRM, and press Enterto

confirm the changes.

To designate the access privileges that a particular user is to be allowed,

move the highlight bar to that column of the menu on your line and, using

the space bar, toggle between the following options; FULL ACCESS,

MAINTENANCE, PROVISION, PROVISION+MAINTENANCE, NO

ACCESS, and DISPLAY ONLY.

NOTE: At least one user must have full access to the unit.

Table 4-8 Login Configuration Options

Parameter

Description

Full Access Class

View any menu and perform any function. It is the only access class

where you are allowed to view the LOGIN CONFIGURATION MENU

and assign names, passwords, and access levels to users. This user is

also the only one who can change the SNMP Configuration, Download

Software, or Delete Entire Node Configuration

Maintenance

Provision

Clears the event history log, clear statistics, and initiate tests.

Allows you to configure the DL3800E.

Provision + Maintenance Allows you to perform all functions allowed Provision and Maintenance

access described above.

Display Only

Allows you access to view-only screens. You are not allowed to make any

changes or initiate tests.

No Access

Not allowed to access the menu screens.

Terminal Automatic

Logout

Sets the Automatic Logout feature of the DL3800E. The unit will logout if

no activity is detected for the amount of time configured.

To change configuration, highlight the item and, using the Space Bar,

toggle until your selection appears. Move the highlight to Confirm, and

press Enter to confirm the change. The default is Off, with15 sec.,30

sec.,1min., three min., five min., 10 min. and 30 min. also configurable.

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NOTE: If the you try to access a screen or perform a function beyond

your allowed access level, the following message appears: Access

denied - your account does not have this PRIVILEGE.

SNMP Configuration

Through the SNMP CONFIGURATION MENU, you configure the

Network Manager (NMS) port on the rear panel of the DL3800E, setting

various addresses and configurable items required for operation with an

SNMP Network Manager. The DL3800E unit utilizes SLIP protocol over the

RS232 port to communicate with the SNMP management station.

To access the SNMP CONFIGURATION MENU, move the highlight bar to

SNMP CONFIGURATION in the CONFIGURATION MENU, and press

Enter.

Figure 4-19 is an example of the SNMP CONFIGURATION MENU, and

Table 4-9 describes the SNMP parameters:

DIGITAL LINK DL3800E SR 3.01.0B NODE

1:123

08/27/00 00:55:51 MJ

SELECTED DEVICE ADDRESS: 1.00.000 NAME:123

SNMP CONFIGURATION

Exit Confirm

NMS SERIAL PORT (SLIP)

UNIT IP ADDRESS: 172.019.001.038 UNIT IP SUBNET MASK:255.255.255.000

TRAP IP ADDRESS:

0.000.000.000 Port: Slip

REMOTE IP ADDRESS: 0.000.000.000

SLIP TRAP DELAY: 0seconds

REMOTE TRAP DELAY: 0 seconds

READ COMMUNITY STRING: public

WRITE COMMUNITY STRING: public

TRAP COMMUNITY STRING

public

SNMP BAUD RATE: 9600

SNMP #BITS AND PARITY: 8 bits, No parity

SNMP STOP BITS: 2 bits

Figure 4-19 SNMP CONFIGURATION MENU

Terminal Interface

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Table 4-9 SNMP Configuration Options

Description/Action

Option

Unit IP Address

The Unit IP Address is a 32-bit quantity which uniquely identifies the node in

the IP network. This address is used by the SNMP manager to access

information from the node.

To set or change the Unit IP Address, move the highlight bar to Unit IP

Address, and enter a 32-bit quantity. Press Enter when finished.

Unit IP Subnet Mask

Trap IP Address

The Unit IP Subnet Mask is a 32-bit quantity that identifies which bits in the IP

address identify the physical network.

To set or change the Unit Subnet Mask, move the highlight bar to Unit

Subnet Mask, and enter a 32-bit quantity. Press Enter when finished.

The Trap IP Address is a 32-bit quantity that identifies the SNMP manager, the

address to which the node sends any event messages.

You can specify up to three different IP addresses.

To set or change the Trap IP Address, move the highlight bar to Trap IP

Address, and enter a 32-bit quantity. Press Enter when finished.

Read Community String This alphanumeric identifier, up to 31 characters in length, identifies a portion

of the SNMP network that is able to read messages from the node.

To set or change the Read Community String, move the highlight bar to Read

Community String and enter an alphanumeric identifier, up to 31

characters in length. Press Enter when finished.

Write Community String This alphanumerical identifier, up to 31 characters in length, identifies a

portion of the SNMP network that can write messages to the node.

To set or change the Write Community String, move the highlight bar to Write

Community String, and enter an alphanumeric identifier, up to 31

characters in length. Press Enter when finished.

Trap Community String

This alphanumeric identifier, up to 31 characters in length, identifies a portion

of the SNMP network that is able to receive event messages from the node.

To set or change the Trap Community String, move the highlight bar to Trap

Community String, and enter an alphanumerical identifier. Press Enter

when finished.

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Table 4-9 SNMP Configuration Options (Continued)

Description/Action

This feature selects the SNMP port’s baud rate.

Option

SNMP Baud Rate

To set or change the SNMP port baud rate, move the highlight bar to SNMP

Baud Rate, and press the Space Bar to toggle between the options until

the desired speed appears. The options are: 300; 600; 1200; 2400; 4800;

9600; 19,200 and 38,400. (Default - 9600)

If the SNMP Baud rate is changed, it is necessary to change the baud rate at

the connection to the SNMP manager before continuing. The same is true for

modifying the parity and/or number of stop bits.

SNMP Bits & Parity

SNMP Stop Bits

This feature selects the SNMP port’s parity.

To set or change the SNMP Parity, move the highlight bar to SNMP Bits &

Parity, and press the Space Bar to toggle between the options until the

desired parity appears. The options are: None, Odd, and Even. Bits is always

set at 8. (Default - None)

This feature selects the SNMP manager stop bit requirement.

Move the highlight bar to SNMP Stop Bits, and press the Space Bar to

toggle between the options 1,1.5, or 2. (Default-2)

To update the SNMP database with all the changes made, move the

highlight bar to CONFIRM, and press the Enterkey. Changes can be

confirmed after each change or after all changes have been made.

IP Bridging to a Remote Unit

The IMUX unit now supports bridging of selected IP packets to the remote

IMUX unit. The bridged packets are transported between the remote unit

and the local NMS/SLIP port using the proprietary Embedded Data Link.

In order to minimize bandwidth constraints, only the following protocols

are bridged:

• SNMP

• Ping (ICMP Echo Request/Echo Response, a subset of full ICMP)

• TFTP

• SNMP Traps from remote

The illustration below shows the SNMP Configuration from the SYSTEM

UTILITIES MENU.

The IMUX unit has a configurable “Remote IP Address” parameter used to

identify the remote unit. The remote IMUX’s “Unit IP Address” parameter

should be set to the same value, although this is not strictly necessary.

Terminal Interface

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However, it is important to note that the remote IMUX’s “Unit IP Address”

parameter must be set to some non-zero value in order to respond to the

bridged IP packets.

SNMP trap packets from the remote IMUX unit are modified upon receipt.

The source IP address field in the trap packet is modified to the “Remote IP

Address” parameter; then the packet is forwarded out the NMS/SLIP link.

In-Band SNMP to Remote

This feature allows you to manage both local and remote units with a

single NMS station attached to only one of the two units.

If the unit receives an SNMP packet from its SLIP port with the IP address

of the remote unit, the local unit forwards the packet to the remote unit

over the Embedded Data Link.

If the unit receives an SNMP packet that does not match its IP address or

the IP address of the remote unit, the packet is discarded.

The unit responds to SNMP packets with its IP address from an NMS with

any IP address.

The unit transmits SNMP responses from either its SLIP port or to the

remote unit depending on the direction from which the packet came.

The IP address of the remote unit must be set to a non-zero value for this

feature to work. This field is shown in Figure 4-19 on page 4-39.

Save Configuration

This option allows you to manually backup the database to EEPROM at

any time To SAVE CONFIGURATION and backup the database to

EEPROM, highlight SAVE CONFIGURATIONin the SYSTEM UTILITIES

MENU, and press the Enterkey.

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Tests

The TESTS MENU allows you to initiate or stop four types of loopbacks for

each individual network port: DTE/NETWORK LOOPBACK for the DTE,

PAYLOAD LOOPBACK, LINE LOOPBACK, and LOCAL LOOPBACK. For

troubleshooting suggestions see “Troubleshooting the DL3800E” on page 6-

To access the TESTS MENU, move the highlight bar to TESTS in the

DL3800E unit Main Menu, and press Enter.

Figure 4-20 is an example of the TESTS MENU. The individual loopbacks

and operation of the menu are described below in the text following the

menu.

Major 01/01/90 04:58:17 Unit:

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: NET : 1 (114)

Network 15 Minute UAS Major Threshold Exceeded

NET : 2 (114)

DIGITAL LINK DL3800E

SR 2.00.00 NODE 7: 01/01/90 05:55:07 MJ

SELECTED DEVICE ADDRESS: 7.00.000 NAME:

DTE AND NETWORK TESTS

DTE TESTS:

Exit Confirm

DTE/NETWORK LOOPBACK: Off

NETWORK TESTS:

PORT#

PAYLOAD LOOPBACK

LINE LOOPBACK

LOCAL LOOPBACK

Off

Figure 4-20 TESTS MENU

Terminal Interface

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To initiate a test, use the CURSOR keys to move the highlight bar to

DTE/Network Loopbackor a Payloador Line Loopbackon a selected

port. Use the space bar to toggle between OFF and ONuntil ON appears in

the display. When that selection appears in the display, move the highlight

bar to CONFIRM, and press the Enterkey. To cancel a test that is running,

move the highlight bar to DTE/Network Loopback. Use the space bar to

toggle between the options until OFF appears in the display. Move the

highlight bar to CONFIRM, and press the Enterkey.

DTE/Network Loopback

The DTE/NETWORK LOOPBACK is a bi-directional loopback that loops

the received DTE signal back to the DTE and the signal from the E1

processor back towards the E1 network. This loopback is used to verify the

operation of the DTE and associated cabling.

Payload Loopback

The payload loopback is used to verify proper E1 network operation of the

DL3800E unit and the E1 network. The Payload Loopback loops the

payload data received from the E1 network back towards the network. The

data is regenerated, and a new framing pattern is inserted prior to being

looped back. In this way the E1 framing of the unit and network can be

verified.

Line Loopback

The line loopback is used to verify the operation of the E1 network. The

line loopback loops the data received from the E1 network back towards

the network. The data is regenerated prior to being looped back; however,

no additional processing of the data is done by the DL3800E. This

minimizes the impact of the DL3800E unit during this test so that network

problems can be isolated.

Local Loopback

The local loopback is used to verify the operation of the DTE and

connections. The local loopback loops the data received from the DTE back

towards the DTE at the network interface.

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Figure 4-21 Loopbacks within the DL3800E unit

Remote Loopback Detection

The DL3800E has the capability of detecting loopbacks which are set on the

remote 3800E or somewhere in the network line. When a remote loopback

is detected, the 3800E removes the port from the DTE data bundle and

reduces the DTE data rate, sets the port LED to yellow and changes the

port status in the Alarms & Status menu to read “Remote Lpbk”. It also

generates an SNMP alarm: enRemoteLpAlarm.

When the remote loopback is cleared, the port is restored to DTE bundle

and LED is restored to green. Port loopback status is cleared and the SNMP

alarm (enRemoteLpAlarm) is idled.

This loopback detection has some limitations. It will not work when a Unit

Number of zero is set (factory default). Also, false remote loopback

conditions will be reported on all ports if the remote Unit Number is the

same as the local Unit Number

NOTE: Remote loopback detection is disabled when the net is

configured for “Install/Test Only.”

Terminal Interface

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WARNING: The E1 Loopback tests will result in removal of the E1

port from service unless the port is configured for “Install/Test Only”

mode. In this mode, a port in loopback will remain in service, which

will disrupt traffic.

Manual Network Restoration

The DL3800E’s E1 ports are normally set to auto restore. However, you

may choose to individually restore E1 networks after they fail, through the

MANUAL NETWORK RESTORATION MENU.

NOTE: Manual restore will only work under the following conditions:

1. If the port has previously been set to “Use w/manual restore,” in

the Network Configuration screen.

2. If the E1 is not in alarm. If the E1 is in alarm, you must first clear

the alarm statistics in the STATISTICS MENU. To learn how to

clear alarm statistics, see “Statistics” on page 4-11.

To access the MANUAL NETWORK RESTORATION MENU (Figure 4-22

on page 4-47) move the highlight bar to Manual Network Restoration in

the CONFIGURATION MENU, and press Enter.

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Major 01/01/90 04:58:17 Unit:

Network 15 Minute UAS Major Threshold Exceeded

Major 01/01/90 04:58:17 Unit: NET : 1 (114)

Network 15 Minute UAS Major Threshold Exceeded

NET : 2 (114)

DIGITAL LINK DL3800E

SELECTED DEVICE ADDRESS:

SR 2.00.00 NODE 7: 01/01/90 05:55:07 MJ

7.00.000 NAME:

You must confirm to save changes.

MANUAL NETWORK RESTORATION

Exit Confirm

PORT# RESTORE

No Change

Figure 4-22 MANUAL NETWORK RESTORATION MENU

To manually restore an E1 port (network), use the UP and DOWN ARROW

keys to highlight the line item of the corresponding network port number.

Toggle from No Changeto Restoreusing the Space Bar. Select Confirm,

and press the Enterkey to save the changes.

Logout

This allows you to manually log off the unit, instead of waiting for the

provisioned automatic logoff time for the unit to log off automatically.

Highlighting LOGOUTand pressing Enterlogs you off the system.

Terminal Interface

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Front Panel Interface

GENERAL

The front panel (Figure 5-1) features a 16 character vacuum fluorescent

display and four buttons that help you to move through the various menus

to configure the unit, perform tests, and obtain vital performance data. The

front panel also features six LEDs for the DTE port, one for each of the E1

networks, three for the DL3800E unit status and one for Network Test.

Figure 5-1 DL3800E Front Panel

DISPLAY OVERVIEW

The DL3800E unit has a 16-character fluorescent front panel display. The

left most character often provides an indication when the displayed

message relates to a remote unit. A remote unit message is indicated by the

character R followed by a comma (R,). When displaying a message relating

to the local unit, this character position is a blank.

BUTTON OVERVIEW

The DL3800E unit has four front panel buttons. The unit generally

responds to a button when it is pressed. Pressing and holding a button

results in a repeating action after one-half second.

END TEST

EXIT

ENTER

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The front panel buttons are also used for Alarm Cutout. When an alarm

condition occurs, the External Alarm Output contacts close. This typically

actuates external alarm indicators such as bells or alarm lights. Pressing

any of the four front panel buttons clears the condition, and turns off the

external bell or light.

Exit Button

The EXIT button is used to cancel operations or exit to a higher level menu

loop from a submenu loop. This button doubles as a left arrow button in a

few situations.

UP ARROW and DOWN ARROW Buttons

The UP ARROW button is used to move to the previous menu item or

configuration option.

The DOWN ARROW button is used to move to the next menu item or

configuration option.

Pressing both the UP ARROW and the DOWN ARROW buttons

simultaneously (the End Test combination), terminates all active tests on

the local unit and brings the front panel menu to the TEST MENU showing

the test that has just been terminated. If no tests are active, pressing the

End Test combination has no effect.

Enter Button

The ENTER button is used to select a submenu loop or configuration

option. This button doubles as the right arrow button in a few situations.

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Front Panel LEDs

Table 5-1 Front Panel LEDs

Indication

Test

Description

Test In Progress LED

No tests are in progress.

A test condition exists.

Off

Solid Red

Data Port LEDs

Data DTE Activity LED. Represents pulses to DTE.

Pulses are being detected.

Green

Off

No pulses are being detected.

Date DTE Activity LED. Represents pulses from DTE.

Pulses are being detected.

Green

Off

No Pulses are being detected.

RTS/TA

Yellow

Off

Request to send indicator, from DTE or TA (HSSI)

RTS from DTE is active.

RTS has been removed.

CTS/CA

Yellow

Off

Clear To Send indicator, to DTE or CA (HSSI)

CTS to DTE is active.

CTS has been removed, indicating that the DL3800E unit is not

sending valid data.

DTR

Data Terminal Ready Indicator (N/A for HSSI)

DTR from DTE is active.

Yellow

Off

DTR from DTE is inactive.

Test

Indicates the port is in test mode.

NOTE: The Test LED is off only when the port is not allocated

bandwidth. It lights red when there is a HW DTE Loopback or

DTE/NET Loopback in progress. It is connected to the TEST lead

going from the DL3800E unit to the DTE, so both the LED and the

lead carry the same data

Network LEDs (T-1 through T-8)

Red

Network is in Red Alarm.

Green

Network is Active and running.

Flashing Green

The network is ready, but it is not part of the bundle to the DTE.

Front Panel Interface

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Table 5-1 Front Panel LEDs (Continued)

Indication

Flashing Green

Yellow

Description

Network crossover is detected.(Check Front panel Display Menu)

Network is in Loopback.

Flashing Yellow

Off

Receiving yellow/AIS alarm.

Network is inactive.

Unit LEDs:

Status

Maj

Display the status of the DL3800E, and whether the condition is a

Major or Minor alarm.

Min

When a port’s Active/Restore mode is set to Never Use and its

alarm mode is set to Mask, then the port LED will be turned off.

Access Levels And Protected Mode

Front panel access can be limited by placing the DL3800E unit in the

Protected Mode. In this mode, you can use the Front Panel User Interface

only to monitor the status of the unit and its Error Counters, and view its

configuration. The following operations cannot be performed through the

Front Panel User Interface when the unit is in Protect Mode:

• Clearing the Error Counters.

• Changing the unit configuration.

• Starting or terminating diagnostic tests.

The unit can be put into and out of Protected Mode through the Terminal

User Interface, but not from the Front Panel User Interface. To place the

unit in protect mode, toggle the Front Panel field to Off, in the UNIT

CONFIGURATION MENU. Refer to “Unit Configuration” on page 4-17.

When a user needs to take a unit out of Protected Mode but a terminal is

not available, the following procedure can be used:

1. Turn off the power to the unit.

2. Press EXIT and the DOWN ARROW buttons at the same time.

3. Turn the power to the unit back on.

NOTE: The unit automatically performs a self test every time the unit is

powered up.

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This procedure takes the unit out of the Protected Mode (and clears any

password that may have been programmed) and sets all parameters to

their default settings. To allow you to perform this procedure when the

unit is in protected mode, the Protected Mode is ignored in the first sixty

seconds after powering up. When in Protected Mode, the TEST MENU

does not appear in the Main Menu.

POWER UP AND RESET

During power up initialization, the unit performs self test and displays a

self-test message. Payload service resumes at the completion of Self Test.

When the Self Test message is removed, the default message DL3800E

Inverse Multiplexer appears on the display.

TOP MENU

NOTE: The menu system in the DL3800E unit is consistent with other

Quick Eagle Networks products. Therefore, a user familiar with an

existing product can easily operate the DL3800E. An example of a

menu tree is shown below:

The TOP MENU loop consists of five items: (1) DL3800E Inverse

Multiplexer designation, (2) Select Remote/Local, (3) MONITOR MENU,

(4) TEST MENU, and (5) CONFIGURATION MENU.

Front Panel Interface

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DL3800 Inverse Mux

SELECT REMOTE

DISPLAY

ENTER

EXIT

Select Remote/Local

Display Menu

EXIT

ENTER

EXIT

ENTER

Test Menu

TEST

EXIT

ENTER

EXIT

CONFIGURATION

Configuration Menu

EXIT

This menu loop may also be entered at any time by pressing the Exit

button to go up the menu hierarchy until reaching the TOP MENU.

Continuing to press Exitwhile in the TOP MENU brings the unit to the

default display DL3800E INVERSE MULTIPLEXERscrolling across the

screen. Pressing the UP and DOWN ARROW buttons get you into the

menu loop. A menu is selected by pressing Enterwhen the menu name

appears on the display.

The DISPLAY MENU is used for displaying Node Status, DTE Status, and

Status of each installed E1 network. The 24-hour line data is only available

with the terminal interface or through the Network Manager. The data in

the DISPLAY MENU is a subset of the parameters that are available on the

ALARM AND STATUS MENU through the terminal interface, or the

Network Manager.

The TEST MENU is used for DTE and Network loopbacks. The DL3800E

unit does not allow performing tests on the remote unit through the front

panel user interface. This feature is only available with the terminal

interface.

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The Configuration MENU is used to view and change the unit's

configuration parameters, date and time, network interface parameters,

and DTE interface parameters.

Both the DISPLAY and CONFIGURATION MENUS are also able to access

the remote unit. Remote monitoring and configuration are only available

when there is an EML (Embedded Maintenance Link) channel to the remote

unit. When you request status or configuration information from the

remote unit, the local unit sends a request to the remote unit over ADL,

and waits for a reply. While waiting for the reply, the local unit displays

the message:

PLEASE WAIT...

On the front panel. If there is no reply from the remote unit within 10

seconds, the display of the local unit will show:

REMOTE NOT AVAILABLE

Otherwise, the information reported by the remote unit will be displayed.

SELECT REMOTE/SELECT LOCAL

Pressing the DOWN ARROW cursor button when the default message is in

the display brings the message SELECT REMOTEor R, SELECT LOCALto the

display. This allows you to log onto either the local or remote DL3800E.

When logged onto the local unit it displays SELECT REMOTE. When logged

onto the remote unit, the display will read R,SELECT LOCAL. To change the

DL3800E unit being monitored and controlled, press Enter. The message

in the display blinks. Press Enteronce again to change from SELECT

REMOTE to R,SELECT LOCAL or visa versa.

NOTE: When logged onto the remote unit, an R, will appear as the

first two characters in the display For example: R,NET1 STATISTICS

DISPLAY MENU

The DISPLAY MENU is used for displaying Node status, DTE status and

the status of each installed E1 line. It is also used to clear the error counters

(Clearing the error counters can only be done when the DL3800E unit is

not in the Protected Mode).

Front Panel Interface

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DISPLAY MENU

ENTER

EXIT

Use Arrow

keys to view

status.

NODE STATUS

EXIT

ENTER

EXIT

Use Arrow

keys to view

status.

DTE STATUS

ENTER

EXIT

Use Arrow

keys to view

status.

NET 1 STATUS

NET 2 STATUS

ENTER

EXIT

Use Arrow

keys to view

status.

ENTER

EXIT

Use Arrow

keys to view

statistics.

NET 1.STATISTICS

NET 2.STATISTICS

ENTER

EXIT

Use Arrow

keys to view

statistics.

RETURN TO MAIN MENU

DISPLAY ITEM

NOTE: Only those E1 circuits physically installed (from two to eight)

will have status lines in this menu.

Node (Common Equipment) Status

This display shows the status of the unit. NODE STATUS is accessed from

the DISPLAY MENU by pressing Enterwhen NODE STATUSappears in the

display.

If one of more errors are detected, one or more of the following messages

will appear. Use the UP and DOWN ARROW buttons to view the

following messages, see Table 5-1 on page 5-9 for a list of those Common

Equipment Alarm and Status items that could appear in this menu.

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DTE Status

The next display shows the status of the DTE data port. The menu is

accessed by pressing Enterwhen DTE STATUSappears in the display.

If errors are detected, one or more of the following messages will appear.

Use the down and UP ARROW buttons to view further messages.

See Table 4-2 on page 4-5 for a list of those Common Equipment Alarm and

Status items that could appear in this menu.

NET (1-8) Status

The next eight displays show the status of the E1 Networks (NET 1

STATUS through NET 8 STATUS if all are installed). Use the UP and

DOWN ARROW buttons to select the E1 Network to be monitored and

press Enter. Use the UP and DOWN ARROW buttons to view further

status items relating to the same E1 circuit.

See Table 4-2 on page 4-5 for a list of those Common Equipment Alarm and

Status items that could appear.

NET (1-8) Statistics

The menu provides you with the various performance statistics of the

individual E1 circuits. These performance statistics are listed and defined

in Table 5-3. To view the statistics of a particular E1 circuit, press Enter

when the display reads NET N.STATISTICS, where N is the number of the

desired E1 network port.

The following table lists and explains the information that can be viewed

from the NET STATISTICS MENU, for each performance statistic:

Table 5-2 NET STATISTICS MENU Information Display

Front Panel Display

Explanation

NET N XXX

XXX = the performance statistic.

N = the E1 network port (1-8).

SEC YYY VALID. Z

YYY = the number of seconds into the current interval.

Z = the number of valid 15 minute intervals since the error counters were reset

(0-96).

CUR. X

TOTL. X

X = the error count within a statistics period.

X = the number of errors in the current interval.

Front Panel Interface

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Pressing the DOWN ARROW from any of these displays will step you

through the last 96 15-minute intervals while displaying the number of

errors in each of the interval. From the Net STATISTICS MENU, press

Enter. When you see Net N CV,press Enteragain. The first display will

read SEC. 455 VALID.8, showing the number of seconds in the current

interval, and the number of valid 15 minute intervals since the error

counters were last reset.

Pressing the DOWN ARROW button from this point in the menu will show

the number of Code Violations in the current interval (CUR 4). Pressing the

DOWN ARROW will display the total number of errors since the registers

were last reset (TOTL. 8). Pressing the DOWN ARROW from here will

cycle you through the last 96 fifteen-minute intervals (or however many

intervals exist since the counters were last reset), displaying the number of

Code Violations in each interval, starting with the most recent, i.e., 1 = 0.

The NET STATISTICS items are listed in Table 5-3.

Table 5-3 NET Statistics Items

Definition

Parameter

EFS

Error Free Seconds (EFS) is calculated whenever ESR is calculated, and is the simple

percentage complement of ESR: EFS = 100.0 - ESR. When there have been UAS in

the statistics history for the past 24 hours, then EFS is set at 100%.

ESR

SESR

BBER

BPV

Errored Second Ratio (ESR) is the ratio of ES to total seconds in available time during

a fixed measurement interval. The fixed interval is the last 24 hours before the current

15 minute interval. When there have been UAS in the statistics history for the past 24

hours, then ESR is set at 0%.

Severely Errored Second Ration (SESR) is the ratio of SES to total seconds in

available time during a fixed measurement interval. The fixed interval to be used is

the last 24 hours before the current 15 minute interval. When there have been UAS

in the statistics history for the past 24 hours, then SESR is set at 0%.

Background Block Error Ratio (BBER) is the ratio of errored blocks to total blocks

during a fixed measurement interval, excluding all blocks during SES and unavailable

time. The fixed interval is equal to the last 24 hours before the current 15 minute

interval.

This display provides the number of Bipolar Violations (BPVs) that have occurred

during the accumulation period. A total of 15430 BPVs in a 10 second sliding

window (approximately 10-3) will create a Major Alarm and 916 BPVs in a 600

second sliding window (approximately 10-6) will create a Minor Alarm.

A Frame Error (FE) is declared when two out of four consecutive framing bits are in

error. Typically, an FE indication will be accompanied by a significant number of

payload data bit errors. This display provides the number of FEs that have occurred

in the accumulation period.

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Table 5-3 NET Statistics Items (Continued)

Parameter

Definition

EB/CV

An Errored Block (EB) is a block in which one or more bits are in error. The EB if

therefore equivalent to the Code Violation (CV) count calculated and displayed in the

previous versions of the DL3800E. This count allows a user to monitor the rate of EB

faults on a line that is unavailable.

EBs are counted in the unavailable state; ES, SES, and BBE are not counted in the

unavailable state.

An Errored Second (ES) is a one second period with one or more errored blocks

(such as one or more CRC4 errors) or an Out Of Frame (OOF). This display provides

the number of ESs that have occurred in the accumulation period. ESs are not

accumulated during UAS.

SES

Severely Errored Seconds (SES) is a one-second period which contains 30% or more

errored blocks or at least one severely disturbed period (SDP). An SDP is present if

either a LOS, AIAS, or LOF occurs.

Since there are 1000 blocks per second, an SES is a one second period which

contains either a combination of 300 or more CRC4 errors, an OOF, or at least one

of the following: LOS, AIS, or LOF. This requirement is a slight change from the prior

DL3800E unit SES definition, which required 320 or more CRC4 errors or LOS, AIS,

or LOF. SESs are not accumulated during UAS.

BBE

A Background Block Error (BBE) is an errored block not occurring as part of an SES.

A BBE is calculated and displayed as a raw count of non-SES EBs. The count is

updated at the end of every measurement second excepting any second that is an

SES. The updated count is discarded for all UAS.

UAS

Unavailable Seconds. This display provides the number of UAS that have occurred in

the accumulation period. At the onset of 10 consecutive SES events, a period of

unavailable seconds begins. These 10 seconds are part of the unavailable seconds

count. At the onset of 10 consecutive non-SES events, a new period of available time

begins. These 10 seconds are part of available time.

UAS only occurs at the onset of 10 SES.

ES, SES, and BBE are not counted during unavailable time. Rate parameters ESR,

SESR, and BBER are the ratio of the fault-seconds count to the total seconds in

available time.

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TEST MENU

The TEST MENU is used to activate network loopbacks and DTE

loopbacks. The TEST MENU is only available when the unit is not in the

Protected Mode.Tests are performed by selecting a test from the TEST

MENU or one of the TEST submenus, and pressing Enter. To end all tests,

press the END TEST button combination (UP and DOWN ARROW buttons

simultaneously). When a test is selected that could apply to an E1 port, you

are asked to specify to which fraction the test should apply. Only the local

unit can be tested from the front panel. Testing the remote unit is limited to

placing it in the Network Loopback Test.

The TEST MENU is broken down into two types of submenus: DTE TESTS

(one menu) and NETWORK TESTS (one for each network interface

installed). Through these submenus, you initiate and stop various tests and

loopbacks.

The TEST MENU is accessed from the Main Menu by pressing Enter

when TESTappears in the display. Pressing the down or UP ARROW

button toggles through the three submenus. The submenus are accessed by

pressing Enterwhen the appropriate menu appears in the display.

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TEST MENU

Strike ENTER to activate

DTE/NET LOOP

EXIT

ENTER

EXIT

DTE TESTS

DTE/NET LOOP

Use Up/Down Arrows to select

PAYLD, LINE or LOCAL Loopback.

Strike ENTER to actiuvate.

ENTER

EXIT

NET 1 TESTS

NET 2 TESTS

NET 3 TESTS

LINE LOOPBACK

Use Up/Down Arrows to select

PAYLD, LINE or LOCAL Loopback.

Strike ENTER to actiuvate.

ENTER

EXIT

LOCAL LOOPBACK

Use Up/Down Arrows to select

PAYLD, LINE or LOCAL Loopback.

Strike ENTER to actiuvate.

EXIT

ENTER

EXIT

LINE LOOPBACK

Use Up/Down Arrows to select

PAYLD, LINE or LOCAL Loopback.

Strike ENTER to actiuvate.

EXIT

ENTER

EXIT

NET 4 TESTS

PAYLD LOOP

Return to Menu

item: TESTS

NOTE: A menu item will appear only for those E1 network interfaces.

installed.

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DTE TESTS

Only one loopback can be initiated through the DTE TESTS MENU, a bi-

directional DTE/NET Loopback.

To access the DTE TESTS MENU from the TEST MENU, press Enterwhen

DTE TESTSappears in the display.

When in the DTE TEST MENU, pressing Enteraccesses the DTE/NET

Loopback.

DTE/NET Loopback

The DTE/NET LOOPBACK is a bi-directional loopback that loops the

received DTE signal back to the DTE and the signal from the E1 Main

Board back towards the E1 Main Board. This loopback is used to verify the

operation of the DTE and associated cabling, the DTE Board, and the link

between the DTE Board and the E1 Main Board.

To initiate a DTE/NET LOOP from the DL3800E unit front panel, press

Enterwhen DTE/NET LOOPappears in the display.

When a DTE/DTE LOOP is in operation, a “plus sign” will appear after

DTE/NET LOOP in the display:

DTE/Net Loop

To end the loopback, press Enteragain while still in the DTE/NET

LOOPBACK MENU.

To cancel a test or loopback from any place in the Menu, press the END

TEST button combination. However, this will cancel all tests and

loopbacks currently in progress.

Only one test can be performed at a time. To start a new test, the previous

test must first be terminated.

Use the Exitbutton to go out of the TEST MENU. Use the other buttons to

go into the MONITOR or the CONFIGURATION MENUS to view the

performance information or view and change the configuration of the unit

while the test is in progress.

While the test is active, the front panel TEST LED is on, reminding you

that the unit is out of normal service condition. The test is terminated by

pressing the END TEST button combination at any point in the menus.

When this combination is pressed, the currently active test is canceled and

the front panel display returns to the TEST MENU to the test that was just

terminated.

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Network Tests (1-8)

Three NETWORK TESTS can be performed through this menu: PAYLOAD

(PAYLD) LOOPBACK, LINE LOOPBACK and LOCAL LOOPBACK. To

access NETWORK TESTS MENU from the TEST MENU, press Enter

when NETWORK TESTS MENU for a particular E1 circuit (NET 1 through

NET 8) appears in the display.

When in a NETWORK TEST MENU, pressing the UP or DOWN ARROWs

toggle between the three options, PAYLD, LINE, and LOCAL LOOPBACK.

Payload Loopback

The PAYLOAD LOOPBACK on the DL3800E unit is used to verify the

proper operation of the E1 network and the DL3800E.

To initiate a PAYLOAD LOOPBACK from the DL3800E, press Enterwhen

PAYLD LOOPBACK appears in the display for the E1 (NET 1 through NET

8) line to be looped back.

When a PAYLOAD LOOPBACK is in operation, a plus sign will appear

after the words PAYLD LOOPBACK in the display.

Payload Loopback

When the loopback is terminated, the “plus sign” disappears.

To end the loopback, press Enteragain while still in the PAYLD

LOOPBACK MENU.

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Line Loopback

The Lineloopback is used to verify the operation of the E1 network

connection (E1 through E8). The line loopback loops the data received from

the E1 network back towards the network. The data is regenerated prior to

being looped back, however, no additional processing of the data is

performed by the DL3800E. This minimizes the impact of the DL3800E unit

during this test so that the problems can be isolated.

To initiate a LINE LOOPBACK from the DL3800E, press Enterwhen LINE

LOOPBACK appears in the display.

When a LINE LOOPBACK is in operation, a “plus sign” will appear after

the words LINE LOOPBACK in the display as shown below:

Line Loopback

To end the loopback, press Enteragain while still in the LINE

LOOPBACK MENU. When the loopback is terminated, the plus sign

disappears.

NOTE: PAYLOAD and LINE LOOPBACKs will result in removal of the

looped port from service, unless the port is configured for “Install/Test

Only” mode.

Local Loopback

The local loopback is used to verify the operation of the DTE and

connections. The local loopback loops the data received from the DTE back

towards the DTE at the network interface.

To initiate a LOCAL LOOPBACK from the DL3800E, press Enterwhen

LOCAL LOOPBACK appears in the display.

When a LOCAL LOOPBACK is in operation, a “plus sign” will appear

after the words LOCAL LOOPBACK in the display as shown below:

Local Loopback +

To end the loopback, press Enteragain while still in the LOCAL

LOOPBACK MENU. When the loopback is terminated, the “plus sign”

disappears.

You can cancel a test or loopback from any place in the menu by pressing

the UP ARROW and DOWN ARROW at the same time. However, this will

cancel all tests and loopbacks currently in progress.

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CONFIGURATION MENU

The CONFIGURATION MENU is used to back up the database and to

view and change the unit and Comm Port Configuration parameters,

network interface parameters, and DTE interface parameters. The remote

unit configuration may also be viewed and changed.

The DL3800E unit configuration can only be changed when the unit is not

in the Protected Mode. In Protected Mode the configuration can only be

viewed but not changed. To use the CONFIGURATION MENU, you select

the configuration submenu from a hierarchical list, and presses Enter. You

then proceed through the hierarchical menu structure to view or change

the chosen parameters. When finished with the CONFIGURATION MENU,

press Exit.

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CONFIGURATION MENU

EXIT

ENTER

BACKUP DATABASE

EXIT

Hit ENTER to Backup Database

EXIT

ENTER

NODE CONFIG

EXIT

Use Up and Down Arrows to

Select Conigurable Item

EXIT

ENTER

DTE CONFIG

EXIT

Use Up and Down Arrows to

Select Conigurable Item

ENTER

NETWORK CONFIG

EXIT

Use Up and Down Arrows to

Select Conigurable Item

EXIT

ENTER

NET 1 CONFIG

EXIT

Use Up and Down Arrows to

Select Conigurable Item

ENTER

NET 2 CONFIG

EXIT

Use Up and Down Arrows to

Select Conigurable Item

EXIT

ENTER

NET THRESHOLDS

EXIT

Use Up and Down Arrows to

Select Conigurable Item

Return to Menu

item: CONFIGURATION

Table 5-4 CONFIGURATION MENU Items

Definition

Backup Database

Used to manually backup the database to EEPROM

NODE CONFIG MENU

Used to set the unit’s ID, date, time, and communications port. It also shows

you the hardware and software versions

DTE CONFIG MENU

Used to set the line mode for the DTE DATA port. It is also used to define

whether the DTE signal is defined missing when the DTR and the RTS line is

not asserted. Other options include DTE/DCE mode, V.35/RS449/X.21,

and clocking option (SCTE/SCT Normal or SCT Invert)

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Table 5-4 CONFIGURATION MENU Items (Continued)

Definition

NETWORK CONFIG

Used to set the operating mode (Inverse Mux or Single Line DSU), and

clocking options of that are common to all E1 Network Ports.

NET N CONFIG MENU

Used to set various configurable items that are unique to each individual E1

Network Port, including Framing Format, TS16, Alarm Reporting, Auto-

Restore, and Equalization.

NET THRESHOLDS MENU Allows you to enable/disable and set the values of the various Network

Alarm Thresholds which, when exceeded, will cause the E1 lines to

automatically be taken out of service.

Node Configuration

The NODE CONFIG MENU allows you to configure the NODE ID, NODE

NUMBER, DATE & TIME and *NODE COMM PORT (Terminal). It also

displays the NODE HW REV and the SOFTWARE REV, which are set by

the factory.

NOTE: Only the terminal comm port can be set through the front

panel. The network management port is set through the ASCII terminal.

The NODE CONFIG MENU is accessed through the CONFIGURATION

MAIN MENU by pressing Enterwhen NODE CONFIGappears on the

display. Pressing the DOWN ARROW or UP ARROW button toggles

through the submenus.

Pressing Enterwhen a selection is in the display allows you to view the

present configuration. Pressing Enteragain will cause the entry to start

blinking and allows you to change the selection if desired.

To change the selection, use the DOWN ARROW and UP ARROW buttons

to toggle through the choices. Pressing Enterselects the option that's in

the display as the configuration. In the case of changing names and

numbers, only one number or letter will “blink” at a time. Only that

number or letter can be changed. After each letter or number is selected,

press Enterto confirm each change. The next letter or number space will

then begin “blinking” and be available for change. To abort any change,

press Exitbefore you press Enter.

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The NODE CONFIGURATION MENU is used to configure various

parameters of the DL3800E, including the following.

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Table 5-5 NODE CONFIGURATION MENU Items

Parameter

Definition

Unit ID

The Unit ID is an alphanumeric designation up to 16 characters in

length. The unit is shipped without a Unit ID.

To access Unit ID from the NODE CONFIGURATION MENU,

press Enterwhen Unit ID appears. Press Enteragain and the first

space or letter blinks. Use the arrows to select the desired letter or

number. Press Enteragain to confirm the selection, and move to the

next letter or number

Unit Number

The Unit Number is a four digit number. The unit is shipped from the

factory without a number.

Note: Each unit must be set to a different number to allow remote

communication and daisy chaining of multiple units. For example, if the

remote unit is set to the same number as the local unit you will not be

able to access the remote unit.

To access the Unit Number, press Enterwhen Unit Number appears

in the display. To enter or change the Unit Number, follow the same

steps as in entering the Unit ID. The following entry should be added:

REM Access ON/OFF

Date & Time

This enables or disables the capability that allows users to view and

access the local configuration settings from the remote unit.

The Date & Time are factory set to PST. The format in the display looks

like: June 07, 1998 09:44:49

To change the Date & Time, follow the procedure described under

“Node Configuration.”

Node Comm Port

Baud Rate

These communications port parameters can be set through this display:

Baud Rate, Parity, Data Bits, Stop Bits, Flow Control, Multidrop Mode.

The BAUD RATE MENU is accessed through the NODE COMM PORT

MENU. When the menu is first displayed, it will show the present Baud

Rate: 38,400, 19,200, 9600, 4800, 2400, 1200, 600, or 300.

Parity

The PARITY MENU is accessed through the NODE COMM PORT

MENU. When the menu is first displayed, it will show the present

Parity: either No, Odd, or Even.

Data Bits

Stop Bits

The DATA BITS MENU is accessed through the NODE COMM PORT

MENU. When the menu is first displayed, it will show the present Data

Bits configuration, either 7 or 8.

The STOP BITS MENU is accessed through the NODE COMM PORT

MENU. When the menu is first displayed, it will show the present Stop

Bits configuration: either 1, 1.5, or 2.

Front Panel Interface

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Table 5-5 NODE CONFIGURATION MENU Items (Continued)

Parameter

Definition

Local Terminal XON/XOFF

With the Flow Control feature On, the terminal can request that the

Terminal quit sending data when its buffers are full. The choices are Use

or Ignore XON/XOFF

Terminal Multidrop

If the local terminal is connected to more than one DL3800E, it must be

in Multidrop Mode. If it is connected to only one unit, this feature can

be disabled. When it is disabled, the system comes up directly, without

having to log in. The choices are Multidrop Mode and Direct Terminal.

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COMM PORT

CONFIG

Arrow keys change

baud rate

EXIT

ENTER

EXIT

ENTER

EXIT

BAUD RATE 9600

Arrow keys change

parity

ENTER

EXIT

ENTER

EXIT

PARITY EVEN

Arrow keys change

length of data bits

ENTER

EXIT

ENTER

EXIT

DATA BITS 8

Arrow keys change

stop bits

EXIT

ENTER

EXIT

ENTER

EXIT

STOP BITS 2

EXIT

ENTER

EXIT

ENTER

EXIT

USE XON/XOFF

EXIT

ENTER

EXIT

ENTER

EXIT

MULLTIDROP MODE

MULTIDROP MODE

To node configuration menu

item: COMM PORT CONFIG

Note that both the NODE HW (HARDWARE) REV and the NODE SW

(SOFTWARE) REV are set at the factory and cannot be changed.

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DTE Configuration Menu

This menu allows you to set various configurable items for the DTE port.

For each item on this menu, pressing the Enterbutton causes the

configurable item to start flashing. Pressing the up arrow and DOWN

ARROW buttons changes the value of the flashing item. Pressing Enter

again terminates the configuration of that item. Pressing Exitaborts the

operation without making the change. Each of the Configurable items are

described in detail in “Network Configuration” on page 4-25.

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Network Config

The NETWORK CONFIG MENU allows you to change various

configurable items common to all E1 network ports. For each item on this

menu, pressing Entercauses the configurable item to start flashing.

Pressing the up arrow and DOWN ARROW buttons changes the value of

the flashing item. Pressing Enteragain terminates the configuration of

that item. Pressing Exitaborts the operation without making the change.

Each of the Configurable items are described, along with the various

options, in detail in “Network Configuration” on page 4-25.

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NET N Config

The NET N CONFIG MENU allows you to change various configurable

items common to all E1 network ports. The menu is shown below.

For each item on this menu, pressing Entercauses the configurable item

to start flashing. Pressing the up arrow and DOWN ARROW buttons

changes the value of the flashing item. Pressing Enteragain terminates

the configuration of that item. Pressing Exitaborts the operation without

making the change. Each of the Configurable items are described in detail

in “Network Configuration” on page 4-25 of this User Manual.

NETWORK THRESHOLDS

This Menu allows you to enable/disable the automatic FALLBACK feature

and set the various Network Alarm Thresholds that will cause the E1 lines

to automatically be taken out of service.

Three levels of thresholds can be turned On or Off, and values set through

this menu: CON (CONSECUTIVE), 15-minute, and 24-hour. Thresholds can

be set for the number of Consecutive seconds (1-100) containing errors, for

the number of seconds containing errors in a 15-minute interval (1-900),

and for the number of 15-minute intervals containing errors in a 24-hour

period (1-96).

You can set the threshold value for Minor (MI) and Major (MJ) alarms,

where exceeding the Minor alarm threshold will generate an alarm report

and the exceeding a Major alarm threshold will actually cause an E1 line to

be automatically taken out of service.

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Pressing Enterwhen NET THRESHOLDS appears in the display screen

will start the menu and allow you to scroll, using the down or up arrow

buttons, through the following options:

Table 5-6 NET THRESHOLD Options and Values

OPTION

VALUE

010

OFF

010

015

OFF

100

OFF

100

OFF

100

OFF

100

OFF

100

OFF

CON CRCS

CON SES

CONSES

CON UAS

15.MIN.MI.BPV

15.MIN.MJ.BPV

15.MIN.MI.CRCS

15.MIN.MJ.CRCS

15.MIN.MI.ES

15.MIN.MJ.ES

15.MIN.MI.SES

15.MIN.MJ.SES

15.MIN.MI.UAS

15.MIN.MJ.UAS

24.HR.MI.BPV

24.HR.MJ.BPV

24.HR.MI.CRCS

24.HR.MJ.CRCS

OFF

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Table 5-6 NET THRESHOLD Options and Values (Continued)

OPTION

VALUE

24.HR.MI.ES

24.HR.MJ.ES

24.HR.MI.SES

24.HR.MJ.SES

24.HR.MI.UAS

24.HR.MJ.UAS

OFF

To turn a Major Alarm ON or OFF, use the UP and DOWN ARROW

buttons to get the specific alarm in the display window and press Enter.

Using the arrow buttons, select ON or OFF. To change an alarm threshold

value, use the UP and DOWN ARROW buttons to get to that particular

alarm and press Enter. Use the Up or Down buttons to raise or lower the

value.

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Diagnostics

EQUIPMENT RETURN AND REPAIR

If faulty equipment is suspected, perform the tests in this section. If, after

performing these tests, the DL3800E unit or any associated module is

suspected to be faulty, call Quick Eagle Technical Support at (408) 745-4200.

RUNNING DIAGNOSTIC TESTS

You should test the DL3800E unit before you use it. If it, or an associated

module, does not operate properly during or after testing, call Quick Eagle

Networks Technical Support at: (408) 745-4200.

This chapter contains procedures for testing the DL3800E unit followed by

suggestions for troubleshooting problems.

You use the DTE AND NETWORK TESTS MENU to initiate and terminate

one DTE test and three network tests. The four tests are:

• DTE/NETWORK Loopback

• Payload Loopback

• LINE Loopback

• LOCAL Loopback

NOTE: You do not need to inform the telephone company that you’re

running the tests. However, if the tests reveal a problem with a carrier’s

service or with the DL3800E, you should inform the carrier that the DTE

equipment or the DL3800E unit must be removed from service.

To initiate a loopback test in the DTE AND NETWORK TESTS MENU,

select TESTS from the INVERSE MULTIPLEXER MAIN MENU, and press

Enterto open the menu.

Select a test on a specific network port, set to ON, select CONFIRM, and

press Enter.

To terminate or cancel the test, select it, set to OFF, select CONFIRM, and

press Enter.

The example in Figure 6-1 shows the TEST MENU.

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Major

01/01/90

Loss of Frame

01/01/90

17:56:47Unit: 1

NET : 2(33)

NET : 2(13)

Idled

17:56:58Unit: 1

Loss of Frame Idled

DIGITAL LINK DL3800E SR 1.XX NODE 1:HOME 01/01/90 03:14:54 MN

SELECTED DEVICE ADDRESS: 1.00.000NAME:HOME

DTE AND NETWORK TESTS

DTE TESTS:

Exit

Confirm

DTE/NETWORK LOOPBACK:Off

NETWORK TESTS:

PORT# PAYLOAD LOOPBACK LINE LOOPBACK LOCAL LOOPBACK

Off

Figure 6-1 TESTS MENU

NOTE: The following 3 tests interrupt payload traffic to the unit.

DTE/Network Loopback Test

Use the DTE/NETWORK Loopback test to verify the data port and

associated cabling. This bi-directional loopback loops the received data

port signal back to the data port and the received E1 processor signal back

to the E1 network. It can test a problem whose source is the E1 line.

LOCAL Loopback Test

Use the LOCAL Loopback test to verify the operation of the DL3800E unit

data port and its connections.

To receive valid test data at the DTE device, run LOCAL Loopback on all

active E1 ports.

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Payload Loopback and Line Loopback Tests

Use the PAYLOAD Loopback and LINE Loopback tests to verify the proper

operation of the DL3800E unit and selected E1 networks.

Both tests loop the payload data received from the E1 network back to the

network.

With the PAYLOAD Loopback, the DL3800E unit regenerates the data and

inserts a new framing pattern before it loops back the data. This verifies

the unit’s E1 framing and the E1 network.

With the LINE Loopback, the DL3800E unit does not do any additional

processing of the data before it regenerates it and loops it back. This

minimizes the involvement of the DL3800E unit during this test so that

problems can be isolated to the network.

PAYLOAD and LINE Loopbacks remove the port from the DTE data bundle

unless the port is configured to “Install/Test Only” mode.

Possible Sources of Problems

The PAYLOAD Loopback can test a problem whose source may be the

DL3800E.

The LINE Loopback can test a problem whose source may be the Telco E1

line, wiring between the Telco demarcation points, the DL3800E unit at one

or both ends, or the cable between the E1 line reporting errors and the

DL3800E.

The TEST LED on the DL3800E unit turns red during the tests, and the E1

port LED turns yellow.

TROUBLESHOOTING THE DL3800E

This section describes problems you may encounter on the DL3800E unit

and suggests ways you can troubleshoot them.

The troubleshooting procedure is designed to isolate the faulty or

malfunctioning item to the E1 network, the DTE equipment, the cable from

the DTE to the DL3800E unit or the DL3800E unit itself. The built-in

diagnostic features of the DL3800E unit aid you in quickly identifying and

isolating faults.

Using the front panel buttons and display, the ASCII terminal or SNMP

workstation, you can run a series of loopback tests. Verification of the

proper functioning of the DTE equipment and the DL3800E unit is

Diagnostics

6-3

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accomplished through DTE loopback and a self test. Testing for the

proper functioning of the remote DL3800E unit is accomplished by a Line

loopback.

It is also possible to verify the path from the DTE through the E1 line to the

remote-end DL3800E, provided the DTE equipment can generate and

detect looped back bit streams.

These suggestions can help determine which portion of the network might

be at fault. When discovering a failure, check the simple solutions first. Is

the power turned on? Is the equipment set up and configured properly?

Will swapping cable pairs solve the problem?

The DL3800E unit is equipped with alarms that alert you to the existence of

possible problems with the unit, and received signals from the DTE or

network. LEDs on the Module provide a quick indication of the status of

that module: green light indicates everything is functioning normally.

Table 6-1 Troubleshooting (1 of 5)

Problem

Solution

DL3800E unit doesn’t

power up.

If the DL3800E unit is AC powered, make sure it is plugged into a live AC

outlet. If it is DC powered, make sure the respective DC leads are not

crossed.

Check all fuses for opens, replace as needed. If the DL3800E unit blows

fuses continuously, call Quick Eagle Networks Technical Support.

You cannot communicate

with the remote DL3800E.

Make sure both units are in Inverse Mux mode, not Single E1 DSU.

Verify that the local and remote units have unique ID’s.

If a DTE device is not connected at either end, set DTE LOSS to None.

Make sure your E1 port LED’s are solid green, indicating that the circuits are

up and running.

The TEST LED on the

Make sure no tests are being initiated, and check the TEST display from a

DL3800E unit is constantly terminal.

on.

If a test is running, end it by selecting the test and set it to Off in the DTE and

NETWORK TESTS MENU.

Make sure the DTE device or the E1 carrier is not sending loop up and loop

down codes.

6-4

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Table 6-1 Troubleshooting (2 of 5)

Solution

Make sure the E1 cable from your service provider is connected to the

Problem

The NETWORK E1 port

LED’s on the DL3800E unit DL3800E.

never illuminate.

Make sure that the E1 port is set to configuration other than “NEVER USE”.

Remove the E1 cable from the affected E1 port, and hardloop the interface

by connecting pins 1-3 and 9-11 of the DB-15 port. If the E1 LED lights up,

check your E1 cabling, and contact your service provider.

The NETWORK E1 LEDs

on the DL3800E unit are

constantly red.

Check each E1 port configuration to make sure the framing and line code

are what the carrier is providing.

Check each DL3800E unit for excessive errors.

Check the E1 cabling or inside wiring for possible problems.

Verify with the service provider that the local Smart Jack is not looped up.

Perform the hardloop procedure on the affected E1 port to verify that the E1

port is functioning on the unit.

The NETWORK E1 LEDs

are constantly yellow.

Make sure no tests are being initiated on the affected E1ports.

Individual E1 port tests cause the E1 LED to turn yellow.

If a test is running, end it by selecting the test, and setting it to Off in the DTE

and NETWORK TESTS MENU.

Verify that the DTE device, the E1 carrier, or the remote unit is not sending

loopup and loopdown codes (check the Alarm & Status Menu).

The NETWORK E1 LEDs

are flashing yellow.

Check the CURRENT ALARMS AND STATUS ITEMS MENU to see if the unit

is receiving an E1 yellow alarm or an Alarm Indication Signal (AIS).

Make sure the remote unit is receiving a valid E1. If it is not, it will transmit

a yellow alarm.

Diagnostics

6-5

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Table 6-1 Troubleshooting (3 of 5)

Solution

Problem

The NETWORK E1 LEDs

on an DL3800E unit are

flashing green.

Make sure a valid DTE device is connected to the DL3800E, and is powered

on.

If no DTE device is connected and the unit is configured for V.35 or RS449,

make sure that DTE LOSS is set to None. If the unit is configured for HSSI,

check for a valid HSSI signal (TA).

If a DTE device is connected, make sure all DTE port LEDs are on.

Check the CURRENT ALARMS AND STATUS ITEMS MENU to make sure no

alarm thresholds have been exceeded.

An E1 circuit is taken out of service for a configured amount of time if

Fallbacks (in Network Alarm Thresholds) or Second Error Restoral Interval (in

Network Configuration) is enabled, and a threshold has been exceeded.

Make sure that the correct E1 cable is connected to the correct E1 port.

Make sure that the E1 lines are not crossed (Check Alarms & Status Menu).

You must restore the E1 line manually if it is configured for use w/Manual

Restore (in Network Configuration), and a threshold or alarm condition has

been exceeded.

The DTE port LED’s on the Make sure the correct DTE cable is securely attached to both units, and the

DL3800E unit do not

illuminate.

connected DTE device is actually passing traffic.

If the connected DTE device does not support the RTS or DTR leads,

configure the DTE LOSS for None. This asserts the CTS lead from the

DL3800E.

Make sure the DL3800E unit is configured for the correct electrical signaling

from the DTE device: V.35, RS449, HSSI or x.21.

The UNIT Major and

Minor Alarm LEDs on the

Alarm thresholds may have been exceeded for the 15 minute or 24 hour

periods. If other thresholds have not been exceeded, the DL3800E unit

DL3800E unit do not clear. automatically clears these alarms after the period has passed.

6-6

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Table 6-1 Troubleshooting (4 of 5)

Solution

The connected DTE device Run a DTE/NET Loopback to verify the physical connection between the

Problem

shows intermittent errors.

local DTE device and the DL3800E.

If errors are reported during this loopback, check the DTE cable.

Make sure the DTE device supports the DTE port clocking option.

Use SCTE clocking for the DTE device if the application is using V.35, and

the DL3800E unit has more than two connected E1 circuits.

Try inverting DTE Tx clock and/or Rx clock when in v.35/RS-449 or x.21

modes.

Make sure the DTE device can handle the set DTE clocking speed.

Make sure the DTE device can run to a DCE in loopback.

The DTE/NETWORK

Loopback does not work

towards the locally

If configured for SCTE, the DTE device must be able to support SCTE clock.

If it does not, set the clocking to SCT.

connected DTE device.

Make sure that the Transmit or Receive clock is inverted.

Make sure the DTE device does not need to see RLSD (RECEIVE LINE SIGNAL

DETECTED) during this loopback. If it does, set RLSD in the DTE

CONFIGURATION MENU to ASSERT this lead.

The DL3800E unit has

timing and synchronization

problems.

Make sure the timing source is set properly.

If the clock source is provided by the circuit provider, set XMT PRIMARY

CLOCK SOURCE to Net, and RCV to the E1 network providing the clocking.

If the clocking is expected from a specific E1 circuit but the circuit is not in

service, set RCV PRIMARY CLOCK SOURCE to AUTO.

If the clock source is not provided by the circuit provider, set XMT PRIMARY

CLOCK SOURCE to INT and the remote unit XMT PRIMARY CLOCK SOURCE

to NET, and RCV to AUTO.

Make sure the proper E1 cables are plugged into the corresponding ports on

the DL3800E.

Diagnostics

6-7

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Table 6-1 Troubleshooting (5 of 5)

Solution

Problem

You cannot access the

DL3800E unit from a

terminal.

The terminal must be running a VT100 or compatible terminal emulation

program.

Make sure you are using a straight through cable with pin 8 CTS cut at the

terminal end.

Make sure the Comm Port parameters match the terminal’s, and the

DL3800E unit has a unique ID. If the DL3800E unit is in a daisy-chain, you

can display a roll call of all unit numbers by pressing Ctrol-x five times.

6-8

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Specifications

E1 NETWORK INTERFACE

Parameter

Setting

Interface Type

Number of Ports

Framing Formats

Line Code

2, 4, 6 or 8

CRC4 (Enabled or Disabled)

HDB3

Transmit Line Rate

Receive Line Rate

Synchronization

Network Connector

2.048 Mbps 50 ppm

2.048 Mbps 75 ppm

Internal, Loop-timed, or External

DA-15 Socket or BNC connectors

EXTERNAL CLOCK INTERFACE

Parameter

Rate

Setting

2.048 MHz 50 ppm

Connector Type

Input Impedance

Input Voltage

DE-9

10 k9

7 V per RS-422 Standard (Balance)

A-1

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DTE INTERFACE

Item

Interface

Electrical Interface

Rate

HSSI or V.35/RS-449/X.21

Up to 15.808 Mbps

Connector Types

DB-25 Socket (V.35/RS449/X.21)

50-pin Socket Amplimite (HSSI)

Number of Ports

One

COMM PORT

Item

Interface

Interface Devices

Protocol

Terminal or Modem

ASCII (VT100)

Electrical

RS-232 Socket (DE-9)

NMS PORT (SNMP)

Item

Interface

Interface Devices

Protocol

SNMP Manager

SNMP (UDP/IP) over SLIP

RS-232 (DE-9)

Electrical

A-2

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FRONT PANEL

Item

Interface

Display

16 Character Alphanumeric

Four Keys

Key Pad

DTE Status LEDs

TEST Status LEDs

Unit Status LEDs

TD, RD, RTS (TA), CTS (CA), HSSI, TEST, T1-T8

TEST

Status MAJ MIN

DIAGNOSTICS

Item

Interface

Loopbacks

Self Test

Alarms

DTE/Network, Payload, Line, Local

Checks Unit Circuitry and Memory on power up

Relay, dry contact

Lamp Test

Press Exit and Enter key at the same time.

POWER

Power

Setting

AC Input

90 VAC, 0.5 A Max 264 VAC, 0.25 A Max

DC Input (Optional)

Power Consumption

-40 VDC to -75 VDC

40 W Maximum

ENVIRONMENTAL

Item

Temperature

Operating Temperature

0 C to 50 C

Specifications

A-3

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Item

Temperature

Storage Temperature

Relative Humidity

Altitude

-20 C to 60 C

0 to 95% Noncondensing

-200 ft to 10000 ft (-60.1 m to 3.048 km) above sea level

8 years.

MTBF

PHYSICAL /CONNECTORS

Item

Dimensions

Mounting

Dimensions

19-inch or 23-inch rack mounting or Standalone

17.2 in W x 2.8 in H x 11in D

(43.7 cm W x 7.1 cm H x 27.9 cm D)

EXTERNAL ALARM CONTACTS

DB-9

Alarm Designations

Alarm In (+)

Alarm In (-)

Major NO

Signal

Input

Normally Open Output

Common

Major Common

Major NC

Normally Closed Output

Normally Open Output

Common

Minor NO

Minor Common

Minor NC

Normally Closed Ouput

Not Connected

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The External alarms are used to turn on a Bell or Light to indicate that an

alarm has occurred on the DL3800E. Either the Major, Minor, or both can be

wired to the DB-9 Connector on the back.

Normally Open (Major or Minor) – The Alarm is off when there is an

open on the alarm circuit. Will indicate an alarm when the circuit is closed.

Normally Closed (Major or Minor) – The alarm is off when there is a short

on the alarm circuit. Will indicate an alarm when the circuit is open.

Alarm In – This alarm can be used to indicate to the DL3800E unit that an

external alarm has occurred such as a door opening or closing. This would

require the customer to use a 48V volt supply to drive the alarm.

Specifications

A-5

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Pinouts

TERMINAL CONNECTION

Table B-1 COMM and NMS Port Pin Assignments

SIGNAL

DIRECTION

To Terminal

Receive Data

Send Data

2 RD

3 SD

From Terminal

Clear to Send

Signal Ground

To Terminal (Connect between units, but not to the Terminal) 8 CTS

(Bidirectional) 5 SG

DCE CONNECTORS

Table B-2 HSSI DCE Connector Pin Assignments

PIN #

DIRECTION +SIDE

PIN #

- SIDE

SIGNAL

SG - Signal Ground

RT - Receive Timing

CA - DCE Available

RD - Receive Data-

Reserved future

—

39-43

To DTE

—

ST - Send Timing

SG - Signal Ground

TA-DTE Available

TT - Terminal Timing

LA - Rollback Circuit A

SD - Send Data

From DTE

—

14-18

LB - Rollback Circuit B

SG - Signal Ground

5 ancillary to DCE

From DTE

B-1

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Table B-2 HSSI DCE Connector Pin Assignments (Continued)

PIN #

DIRECTION +SIDE

PIN #

- SIDE

SIGNAL

SG- Signal Ground 5

ancillary from DCE

—

5 ancillary from DCE

SG - Signal Ground

To DTE

20-24

33-49

—

CHANNEL 1 DATA CABLE PIN ASSIGNMENTS

The pin assignments for the V.35, M-34 to DB-25 DTE cable are listed in

Table B-3.

Table B-3 V.35, M-34 to DB-25 DTE Cable Pin Assignments

M-34

DB-25

Signal Name

RD B

Signal

To DTE

From DTE

To DTE

From DTE

DTE

RD A

SD B

SD A

DSR

DTR

Signal Ground

CTS

To DTE

From DTE

RLSD

SCR A

SCR B

SCT A

SCT B

SCTE A

SCTE B

RTS

Frame Ground

B-2

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Table B-4 EIA-530, DB-25 to DB-25 DCE Connector Pin Assignments

DB-25

SIGNAL

SCTE

RTS

DSR

CTS

RLSD

SCR

SCT

Pinouts

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DB-25 to DC-37 Data Port Cable Pin Assignments

The pin assignments for the DB-25 to DC-37 Data Port cable are listed in

Table B-5.

Table B-5 DB-25 to DC-37 Data Port Cable Pin Assignments

DC-37

DB-25

Signal Name

TT A

Signal

From DTE

To DTE

TT B

RS A

RS B

RD A

RD B

To DTE

SD A

From DTE

To DTE

SD B

DM A

DM B

CS A

To DTE

CS B

To DTE

TR A

To DCE

To DTE

TR B

RR A

RR B

To DTE

RT A

To DTE

RT B

To DTE

SCT A

SCT B

Signal Ground

Frame Ground

To DTE

From DTE

To DTE

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COMMUNICATION PORT PIN ASSIGNMENTS

RS-449, DC-37 to DB-25 DCE Cable Pin Assignments

Table B-6 describes the RS-449, DC-37 to DB-25 DCE cable pin

assignments.

Table B-6 RS-449, DC-37 to DB-25 DCE Cable Pin Assignments

DC-37 DB-25

Pinouts

B-5

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E1 NETWORK PIN ASSIGNMENTS

The network connector is a DA-15 connector. The assignments for the

Network connector are given below.

Table B-7 Network Pin Assignments

SIGNAL

Send towards Network Tip (T1)

Send towards Network Ring (R1)

Frame Ground

Receive from Network Tip (T)

Receive from Network Ring (R)

Frame Ground

5,6,7,8,10,12,1314,15

Not Connected

DB-25 TO DE-9 ADAPTER PINOUTS

An adapter is available from Quick Eagle Networks that will allow the

Quick Eagle Networks DE-9 ribbon cable to be compatible with a DB-25

connector on the terminal port.

Table B-8 DB-25 to DE-9 Pinouts

DB-25

DE-9

B-6

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X.21 TO DB-25 CABLE PINOUTS

Table B-9 DB-25 to DB-15 Pinouts

X.21

Signal Name

Control (A)

DB-25

Control (B)

Rx DAta (A)

Rx Data (B)

Send Data (A)

Send Data (B)

Indication (A)

Indication (B)

Serial Clock Rx (A)

Serial Clock Rx (B)

Serial Clock External (A)

Serial Clock External (B)

Signal Ground

*14

* Needs to be wired in when using X.21 with SCTE.

EXTERNAL CLOCK CONNECTOR PIN ASSIGNMENTS

A DE-9 connector is provided on the DL3800E unit rear panel for

connection to an External Clock. Pin Assignments for the External Clock

connector are as Listed in Table B-14:

Table B-10 External Clock Pinouts

SIGNAL

Signal A

Signal B

Shield

3,4,6,7,8,9 No Connection

Pinouts

B-7

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Per RS-422 requirements, the receiver has an input sensitivity of 200 mV

over the input voltage range of 7 V. The frequency is 2.048 MHz

50 ppm, and the impedance is 10 kW.

B-8

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ALARM PINOUT

Pin Assignments for the Alarm connector are as follows:

Table B-11 Alarm Pinout

SIGNAL

Maj Comm

Maj NC

Maj NO

not connected

Alarm in -

Min Comm

Min NO

Min NC

Alarm in +

Maj

Min

Major

Minor

Normally Closed (unless alarm condition is true

this pin is connected to the appropriate comm pin)

Normally Open (only during an alarm condition

will this be connected to the appropriate comm

pin)

Alarm in

input for an alarm to the device

The above table shows the signal names and pin connections. These

outputs of Major alarms normally open and normally closed, Minor alarms

normally open normally closed, and Alarm in + & - are done through

relays and an optoisolators respectively. They are designed for -48v,

although a lower voltage should work equally well.

Pinouts

B-9

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DC POWER CONNECTIONS

Figure B-1 DC Power Connections

DTE CLOCK RATES

Table B-12 DTE Clock Rates

NETWORKS

DTE CLOCK RATE, MBPS

1.976

TSLOT16= DATA

3.952

5.928

7.904

9.880

11.856

13.832

15.808

1.912

TSLOT=FLAG

3.824

5.736

7.648

9.560

11.472

13.384

15.296

B-10

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Factory Default Settings C

Table C-1 Unit Settings

Unit

Setting

ALARM ENABLE

Disabled

AUTOMATIC BACKUP

5 minutes after each database

change

FRONT PANEL

UNIT NUMBER

TERMINAL BAUD RATE

TERMINAL PARITY & BITS

TERMINAL STOP BITS

XON/XOFF

9600

8 bits, No parity

Enabled

MULTIDROP

Table C-2 DTE Settings

DTE

Setting

V.35

DTE INTERFACE

CLOCK

SCTE

TX CLOCK

Normal

Automatic

RTS

RX DLOCK

RLSD MODE

DSR MODE

CTS MODE

TM MODE

DTE LOSS DETECTION

C-1

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Table C-3 Network Settings

Network

Setting

ALARM

Mask

ACTIVE/RESTORE MODE

FRAME

Never Use

CRC4

LINECODE

HDB3

TSLOT 16

DATA

NATIONAL BIT

PRIMARY CLOCK SOURCE

SECONDARY CLOCK SOURCE

DSU MODE

1-5

Xmt Int. Rcv Net 1

Xmt Int. Rcv Net 2

Inverse Mux (Standard

Operation)

SUPPRESS YELLOW DET

Disabled

Table C-4 Network Threshold Settings

Network Threshold

Setting

CONSECUTIVE THRESHOLDS

Fallback Disabled, Seconds 10

Fallback Disabled

INTERVAL THRESHOLDS (15

MIN)

Seconds

Major 100

Minor 100

INTERVAL THRESHOLDS (24 HR) Fallback Disabled

Seconds

Major 10

Minor 10

Table C-5 SNMP Configuration Settings

SNMP Configuration

ALL ADDRESSES

Setting

0.000.000.000

Public

READ COMMUNITY STRING

WRITE COMMUNITY STRING

TRAP COMMUNITY STRING

SNMP BAUD RATE

Public

9600

C-2

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Table C-5 SNMP Configuration Settings

SNMP Configuration

Setting

BITS & PARITY

STOP BITS

8 bits, No parity

Table C-6 Test Settings

Tests

Setting

Off

ALL LOOPBACKS & TESTS

Factory Default Settings

C-3

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Glossary

ABAM

A designation for 22-gauge, 110-ohm, plastic-insulated, twisted-pair Western

Electric cable normally used in central offices.

AIS (Alarm Indication Signal)

An unframed sequence of All Ones normally sent by a DSU/CSU that cannot

maintain the required pulse density in AMI mode or sent by a CSU that has a

loss of signal condition on its data port. The signal is sent to maintain

continuity of transmission and to notify the far-end that a transmission fault

exists on the line. Same as Blue Alarm.

alternate loop code

Used to invert loop codes from U.S. standard code; inverts zeros to ones and

ones to zeros.

AMI (Alternate Mark Inversion)

A line code in which the signal carrying the binary value alternates between

positive and negative polarities.

ANSI (American National Standards Institute)

Coordinates the development of U.S. voluntary national standards in both the

private and public sectors. Standards pertain to programming languages, EDI,

telecommunications and physical properties of diskettes, cartridges and

magnetic tapes.

ASCII (American National Standard Code)

The standard and predominant seven-bit (eight bits with parity) character code

used for data communications and data processing.

asynchronous transmission

Transmission not related to a specific frequency, or to the timing of the

transmission facility.

attenuation

Reduction or loss of signal strength, measured in decibels; opposite of gain.

G-1

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B8ZS (Bipolar 8 Zero Substitution)

A technique used to accommodate the ones density requirements of T1

transmission.

bandwidth

The data-carrying capacity of a transmission medium, usually measured in

Hertz (Hz), which equals cycles per second.

baud

BER

A measurement of the signaling speed of a data transmission device.

See bit error rate.

BES (Bursty Errored Seconds)

Occurs when a second has 320 or more CRC violations. (ESF format only)

bipolar

The predominant signaling method used for digital transmission services, such

as DDS and T1, in which the signal carrying the binary value successively

alternates between positive and negative polarities. Zero and one values are

represented by the signal amplitude at either polarity, while no value “spaces”

are at zero amplitude.

bit error

Occurs when the value of an encoded bit is changed in transmission, and

interpreted incorrectly by the receiver.

Bit Error Rate (BER)

The percentage of received bits that are in error, relative to a specific amount of

bits received; usually expressed as a number referenced to a power of 10.

bps

Bits per second; the basic unit of measure for serial data transmission capacity;

Kbits (kilobits) for thousands of bits per second; Mbitps (megabits) for millions

of bits per second, and Gbits (gigabits) for billions of bits per second.

Blue Alarm

An unframed sequence of All Ones normally sent by a DSU/CSU that cannot

maintain the required pulse density in AMI mode or sent by a CSU that has a

loss of signal condition on its data port. The signal is sent to maintain

continuity of transmission and to notify the far-end that a transmission fault

exists on the line. Same as Alarm Indication Signal (AIS).

G-2

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broadband

Services or interfaces that operate above the T1 data rate, typically at NxT1, T3,

SONET, or ATM speeds.

BPV (Bipolar Violation)

Occurs when the ones bit is not represented with the opposite signal of the

previous ones bit.

CCITT

International Telegraph and Telephone Consultative Committee.

central office (CO)

The phone company switching facility or center; usually a Class 5 end office, at

which subscribers' local loops terminate.

channel

A physical or logical path allowing the transmission of information; the path

connecting a data source and receiver.

circuit

Generally referring to a transmission medium connecting two or more

electronic devices.

clear channel

A characteristic of a transmission path or digital circuit in which the full

bandwidth is available to you. The phone company does not use any portion of

the bandwidth for framing or control bits.

clock

An oscillator-generated signal providing a timing reference for a transmission

link; used to control timing functions such as sampling interval, signaling rate

and duration of signal elements.

code conversion

The process of changing the bit grouping for a character in one code into the

corresponding bit grouping for the character in another.

CMI (Control Mode Idle)

The process of changing the grouping for a character in one code into the

corresponding bit grouping for the character in another.

communications port (Comm Port)

The electrical interface between a unit and the operator’s terminal. Operator

commands and responses can be communicated through the Comm Port.

Glossary

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connector

A physical interface, such as DB-15 or RS-232-C, typically with male or female

components.

CPE (Customer Premises Equipment)

Equipment that interfaces the telephone network and physically resides at

your location.

CRC (Cyclic Redundancy Check)

An error checking scheme used to check the received data. The CRC bits

within the framing are calculated using the contents of the frame. The

calculation is performed again when the frame is received and the CRC values

are compared. If they do not match, the frame is considered bad and the CRC

statistic is incremental. Performance checking is done by both the carrier and

the customer without causing any interference with the T-1 traffic.

CSU (Channel Service Unit)

The CPE used to terminate a digital circuit at the customer site. The CSU

performs certain line-conditioning functions, ensures network compliance to

FCC rules and responds to loopback commands. It ensures proper ones density

in the bit stream and performs bipolar violation correction. The DSU and CSU

are often in the same unit.

CTS (Clear to Send)

A signal issued by the DSU to indicate it is connected to the digital network

and is ready to accept data.

CV (Code Violation)

Any code violation.

Framing format for T1 transmission that places 12 T1 frames into a superframe.

In ESF (a newer framing format) frames consist of 24 bits instead of the

previous standard 12 bits as in D4 format.

DACS (Digital Access Cross-Connect Switch)

A digital switching device for routing and switching T1 lines and DS-0 portions

of lines among multiple T1 ports. DACS performs all the functions of a normal

switch, except that connections are typically set up in advance of a call, not

together with a call, as in most, normal low-bandwidth communications

systems (e.g. voice-band voice and data). A DACS is in essence a manual T-1

switch.

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data link

Any serial data communication transmission path, generally between two

adjacent nodes or devices and without any intermediate switching nodes.

data link layer

In the OSI model, the network processing entity that establishes, maintains and

releases data link connections between adjacent elements in the network.

DCE (Data Circuit-Terminating Equipment)

Equipment that is either a part of the network, an access point to the network,

a network node, or equipment at which a network circuit terminates.

dial-up

Describing the process of, or the equipment or facilities involved in,

establishing a temporary connection via the switched telephone network.

digital loopback

A technique for testing the digital processing circuitry of a communications

device; may be initiated locally or remotely via a telecommunications circuit.

The device being tested returns a received test message, the results of which

are compared to the original message.

DS-0 (Digital Signal Level 0)

A 64kbit/s standard digital telecommunications signal or channel.

DS-1 (Digital Signal Level 1)

The 1.544Mbit/s digital signal carried on a T1 facility.

DS-3 (Digital Signal Level 3)

The 44.736Mbit/s digital signal carried on a T3 facility.

DSU/CSU (Data Service Unit/Channel Service Units)

The pair of communications devices that connect an in-house line to an

external digital circuit. At the customer's end of the telephone connection, the

DSU/CSU takes data from terminals and computers, encodes it, and transmits

it down the link. At the receive end, another DSU/CSU equalizes the received

signal, filters it, and decodes it for interpretation by the end-user.

DSU (Data Service Unit)

A device designed to connect a DTE to a digital phone line. The DSU transmits

and receives the signal and provides buffering and flow control. The DSU and

CSU are often in the same unit. Also called a Digital Service Unit.

DSR (Data Set Ready)

A data port signal.

Glossary

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DSU Loopback

A DSU loopback is intended to include as much of the customer data

communications circuitry in the looped-back path as possible. The signal passes

from the remote unit into the local unit as far as the DSU. This test loops the

received network signal back to the network.

DSU/CSU (Data Service Unit/Channel Service Units)

The pair of communications devices that connect an in-house line to an

external digital circuit. At the customer's end of the telephone connection, the

DSU/CSU takes data from terminals and computers, encodes it, and transmits

it down the link. At the receive end, another DSU/CSU equalizes the received

signal, filters it, and decodes it for interpretation by the end-user.

DSX-1 (Digital Signal Cross Connect Level 1)

Parameters set used when DS-1 signals are cross connected.

DTE (Data Terminal Equipment)

Terminal equipment connected to the DSU and used for communication over

digital networks. May be a terminal, computer, printer or multiplexer.

DTE loopback

An EIA-232-D signal which indicates that the DTE is ready for operation.

DTR (Data Terminal Ready)

Signal from DTE to DSU/CSU.

EER (Excessive Error Rate)

Determined by counting the number of T1/T3 code violations during a time

interval.

EFS (Error Free Seconds)

Occurs when a second is free of CRC-6 violations or Out of Frame (OOF) events

or one or more BPV or OOF events.

EIA (Electronic Industries Association)

An organization which sets data communication industry standards.

encoding/decoding

The process of reformatting information into a format suitable for

transmission, and then recovering it after transmission.

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equalization

The spacing and operation of amplifiers so that the gain provided by the

amplifier, per transmission frequency, coincides with the signal loss at the same

frequency; circuitry that compensates for the differences in attenuation at

different frequencies.

ES (Errored Second)

Occurs when a second has one or more OOF events or CRC violations or with

one or more BPV or OOF events.

ESF (Extended Superframe Format)

A new T1 framing standard used in Wide Area Networks (WANs). With this

format 24 frames, instead of 12 are grouped together. ESF provides frame

synchronization, cyclic redundancy checking and data link bits in overhead. It

allows more information to be stored and retrieved easily, facilitating network

performance monitoring and maintenance.

failed signal state

Occurs when ten consecutive severely errored seconds are detected.

far end

The unit or units remote from you.

FE (Framing Errors)

Occurs when the end of a frame is not detected where it should be.

FDL (Facility Data Link)

A four Kbps data channel provided by 12 of the 24 ESF framing bits. It is used

by the carrier to request reports, clear error counters and activate loop backs.

FG (Frame Ground)

A signal from DTE to DSU/CSU.

fractional bandwidth DTE loopback

A loopback test that loops back the signal at the network interface. See also

loopback.

Fractional T1

frame

A service that provides less than full T1 capacity (one or more 64 Kbps

channels are provided).

A group of bits sent serially over a communications channel. The basic data

transmission unit employed with bit oriented protocols.

Glossary

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frame relay

A high-speed packet switching protocol used for wide area networks (WANs);

faster than traditional X.25 networks, because it was designed for today's

reliable circuits and performs less rigorous error detection. Frame relay networks

use bandwidth only when there is traffic to send. Frame relay does not support

voice.

framing

A technique which separates incoming bits into identifiable groups to enable

the receiving device to recognize and reconstruct them.

frame ground

A metallic layer acting as a shield, consisting of tape, braid, wire or sheath and

surrounding insulated conductors in cable. It may be the metallic sheath of the

cable or the metallic layer inside a nonmetallic sheath. It reduces stray

electrical fields, prevents outside electrical interference, drains off current

induced by lightning and provides for safety of personnel.

frequency

The number of repetitions per unit time of a complete waveform. The number

of complete cycles per unit of time, usually expressed in Hz.

full bandwidth DTE loopback

A loopback test that loops back the signal at the multiplexer. See also loopback.

HDLC (High Level Data Link Control)

Bit-oriented, data-link control protocol; any related control of data links by

specified series of bits, rather than by control characters.

IP address

A unique, 32-bit identifier for a TCP/IP host on a network. IP addresses are

normally printed in dotted decimal form, such as

LBO (Line Build Out)

An adjustable value used to tune the attenuation between the DSU/CSU card

and the last repeater on the T1 circuit.

LED (Light emitting diode)

A device that accepts electrical signals and converts the energy to a light

signal.

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LOF (Loss of Frame)

Occurs when a received digital signal loses frame synchronization.

LOFC (Loss of Frame Count)

A count of declared Loss of Frame events (ESF framing only).

loopback

A diagnostic test in which the transmitted signal is returned to the sending

device after passing through a data communications link or network. This

allows a technician (or built-in diagnostic circuit) to compare the returned

signal with the transmitted signal and get some sense of what's wrong.

LOS (Loss of Signal)

Occurs when an input signal is detected as all zeros for 176 bit times.

loss

A reduction in signal strength, expressed in decibels.

LSC (Loopback Select Code)

An indicator describing a DSU loopback characteristic. LSC is a minimum of 35

LSC bytes of S11101F1 with secondary channel.

LT (Local Test)

A data port signal to DSU/CSU.

mask

Refer to subnet mask.

MIB (Management Information Base)

A structure that defines what is obtainable from a network device and what

can be controlled. It has a directory listing the logical names of all information

resources residing in the network and pertinent to the network's management.

It is used to describe network management variables.

multiplexer

Any device that allows two or more users to share a common physical

transmission medium. Employed in pairs, where each device performs both

multiplexing of the multiple user inputs and demultiplexing of the channel

back into the separate user data streams.

multiplexing

The combining of multiple data channels onto a single transmission medium.

Typically, data streams are interleaved on a bit or byte basis (time division) or

separated by different carrier frequencies (frequency division).

Glossary

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multidrop

A communications arrangement where multiple devices share a common

transmission channel, though only one may transmit at a time.

NEBS

A network Equipment Building Systems requirement. A standard issued by

Bellcore that spells out central office standards for grounding, cabling and

power.

network

An interconnection of computer systems, terminals, or data communications

facilities.

NI (Network Interface)

The point of demarcation between the customer premises and the carrier's

network, usually drawn at the network connector on the rear panel of the

Quick Eagle Networks access device.

NRZ (Non-Return to Zero)

A binary encoding and transmission scheme where “ones” and “zeros” are

represented by opposite, and alternating, high and low voltages.

NRZI (Non-Return to Zero Inverted)

A binary encoding technique that inverts the signal on a “one” and leaves the

signal unchanged for a “zero,” where a change in voltage state signals a “one”

bit and the absence of a change denotes a “zero” bit value.

OOS (Out of Service)

A digital network trouble signal.

OOF (Out of Frame)

An error checking scheme. An OOF occurs when two out of four consecutive

framing bits are in error.

parity bit

An additional, non-informational bit appended to a group of bits indicating

that the number of “ones” in the bits group is odd or even.

parity check

A process of error checking using the parity bit.

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polarity

port

Any condition where there are two opposing charges, such as positive and

negative.

The physical point of access into a computer, network or other electronic

device.

protocol

A formal set of rules governing the format, timing, sequencing and error

control of exchanged messages on a data network.

RD (Receive Data)

A data port signal.

receiver

The receiver synchronizes the framing pattern, separates the frame bits from

the payload data and monitors for frame errors in 64 kbps mode. It achieves

frame synchronization within 5 milliseconds.

repeater

Equipment that receives a pulse train, amplifies it, retimes it, and then

reconstructs the signal for retransmission.

return to zero

Method of transmitting binary information such that, after each encode bit,

voltage returns to the zero level.

RI (Ring Indicator)

A data port signal.

RJ48S

An 8-position keyed jack used to connect services that are covered under FCC

Part 68 Rules, such as public switched digital service (PSDS), switched 56, 19.2

Kbps service, 64 Kbps service, and synchronous digital data with secondary

channel.

RLSD

RS232

Receive Line Signal Detect, a data port signal

A TIA/EIA standard for serial transmission.

Glossary

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RS232-C

An EIA specified physical interface, with associated electrical signaling,

between data circuit terminating equipment (DCE) and data terminating

equipment (DTE).

RS449

A common 37-position interface for data terminal equipment and data circuit

terminating equipment employing serial binary data interchange. It is a

balanced interface, based on unipolar digital signals, depending more on

current flow than voltage, therefore supports greater distances than the RS-232

interface.

RTS(Request to Send)

A signal sent by DTE to DSU/CSU indicating DTE has data ready to transmit.

SCR (Serial Clock Receive)

A unipolar clock from the DCE signal. A data port signal.

SCT (Serial Clock Transmit)

A unipolar clock from the DCE signal. A data port signal.

SCTE (Serial Clock Transmit External)

The clock signal is echoed from the DTE for the purpose of timing incoming

data on long cable runs.

scrambler

A device or software program that encodes data for encryption. It distorts a

voice or data conversation so that only another like device can figure out the

content of the message.

SD (Send Data)

A signal from DTE to DSU/CSU.

secondary channel

A subchannel derived from the main channel. It does not carry data messages

and is used for diagnostic or supervisory purposes.

serial transmission

A sequential transmission of bits constituting an entity of data over a data

circuit.

SES (Severely Errored Second)

A second during which 320 or more CRC violations or OOF events have

occurred (ESF framing only).

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SG (Signal Ground)

A signal from DTE to DSU/CSU.

simplex current

One way transmission used by Telco to provide power to repeaters.

SLIP (Serial Line IP)

A TCP/IP protocol that allows IP packets to be transmitted over a serial link,

such as a dial-up or private telephone line.

SMDS (Switched Multimegabit Data Service)

A fast-packet technology based on the connection-less data networking

capability described in the IEEE 802.6 specification. The data format for SMDS

is “cell oriented.” SMDS does not support voice.

SNMP (Simple Network Management Protocol)

A widely-used network monitoring and control protocol. Data is passed from

SNMP agents (hardware and/or software processes reporting activity in each

network device, hub, router, bridge, etc.) to the workstation console used to

oversee the network. The agents return information contained in a MIB

(Management Information Base), which is a structure that defines what is

obtainable from the device and what can be controlled.

stop bit

The last transmitted element in each character, which permits the receiver to

come to an idle condition before accepting another character.

subnet mask

The number of bits in an IP address used for the subnet address.

synchronous transmission

Data communications in which characters or bits are sent at a fixed rate and the

transmitting and receiving devices are synchronized.

A digital carrier facility used to transmit a DS-1 formatted digital signal at

1.544 Mbps. T-1 normally can handle 24 voice conversations, each one digitized

at 64kbps. But, with more advanced digital voice encoding techniques, it can

handle more voice channels. T-1 is a standard for digital transmission in North

America. T-1 lines are used for connecting networks across remote distances.

A digital carrier facility used to transmit a DS-3 formatted digital signal at

44.736 Mbps.

Glossary

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T-Carrier

A time-division, multiplexed digital transmission facility, usually operating at

an aggregate data rate of 1.544 Mbps.

telnet

A remote terminal application that enables you to log on to a remote computer

on the same IP network. You can work from the PC as if it were a terminal

attached by a hard-wired line to the remote computer. The application uses the

Telnet Internet protocol.

transmitter

TRAP

In 64K mode, the transmitter inserts the frame bit, with a fixed pattern of

101100.

A mechanism by which a device automatically sends an alarm for certain

network events to a management station. The management station can initiate

a polling sequence to the device to determine the cause of the problem.

UAS (Unavailable Seconds)

Number of seconds elapsed after 10 consecutive SES events are received (ESF

framing only).

V.35

A CCITT standard for the trunk interface between a network access device and

a packet network. It defines signaling for data rates greater than 19.2 Kbps.

V.52

V.54

Terminal emulation standard. CCITT standard (1976) for various loopback

tests that can be incorporated into modems for testing the telephone circuit and

isolating transmission problems. Operating modes include local and remote

digital loopback and local and remote analog loopback.

A CCITT standard for loop test devices in modems. It defines local and remote

loopbacks.

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Index

Alarm Level 4-16

Alarms and Status 4-5

Application 2-3

E1 NETWORK INTERFACE A-1

E1 Port Mismatch Detection 2-5

Enter Button 5-2

Audience xvii

AWG tray cable 3-3

ENVIRONMENTAL A-3

Equipment Return And Repair 6-1

Event History 4-15

Exit Button 5-2

EXTERNAL ALARM CONTACTS A-4

External Clock Connector Pin Assignments B-7

EXTERNAL CLOCK INTERFACE A-1

External Clock Pinouts B-7

Button Overview 5-1

cable

installing DC power 3-4

cable ties 3-4

COMM and NMS Port Pin Assignments B-1

COMM PORT A-2

Configuration 4-17

Configuration Menu 5-17

CONFIGURATION MENU Items 5-18

Conventions xviii

Factory Default Settings C-1

FRONT PANEL A-3

Front Panel Interface, Chapter 5 5-1

Front Panel LEDs 5-3

Functional Description 2-4

General 5-1

General Menu Flow 4-2

grounding

DB-25 to DE-9 Adapter Pinouts B-6

DB-25 to DE-9 Pinouts B-6, B-7

DC power 3-3

DC power 3-4

DC Power Connections B-10

defaults

front panel message 3-4

Delete RAM Code and Revert to ROM Code 4-36

DIAGNOSTIC A-3

Display Menu 5-7

Display Overview 5-1

Download Destination (Local Unit, Remove Unit,

Both Units 4-33

DTE CLOCK RATES B-10

DTE Clock Rates B-10

HSSI DTE Connector Pin Assignments B-1

In-Band SNMP to Remote 4-42

installation

DC power 3-4

Inverse Multiplexer Main Menu Commands 4-4

DTE Configuration 4-20

DTE Configuration Menu 5-24

DTE Configuration Menu Options 4-23

DTE CONNECTORS B-1

DTE INTERFACE A-2

Line Loopback 4-44, 5-16

Local Loopback 4-44, 5-16

LOCAL Loopback Test 6-2

Logout 4-47

DTE Settings C-1

DTE Status 5-9

DTE Tests 5-13

DTE/NET Loopback 5-14

DTE/Network Loopback 4-44

DTE/Network Loopback Test 6-2

Manual Network Restoration 4-46

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Save Configuration 4-30, 4-42

Screen Description 4-2

Select Local/Remote 4-4

Select Remote/Select Local 5-7

Signal Flow 2-4

NET (1-8) Statistics 5-9

NET (1-8) Status 5-9

NET N Config 5-28

NET STATISTICS MENU Information Display 5-9

NET Ststistics Items 4-13, 5-10

NET THRESHOLD Options and Values 5-29

Network Config 5-26

SNMP Configuration 4-39

SNMP Configuration Settings C-2

Software Download 4-31

Software Download Options 4-33

Specifications, Appendix A A-1

Statistics 4-11

Network Configuration 4-25

Network Configuration Menu 4-26

Network Pin Assignments B-6

Network Settings C-2

Network Tests (1-8) 5-15

Symbols xviii

System Benefits 2-3

Network Threshold Settings C-2

Network Thresholds 4-28, 5-28

NMS PORT (SNMP) A-2

System Features 2-2

System Overview 2-1

System Utilities 4-30

Node (Common Equipment) Status 5-8

Node Configuration 5-19

Node Configuration Options 4-18

TC cable 3-4

TERMINAL CONNECTION B-1

Terminal Interface, Chapter 4 4-1

Terminal Operation Overview 4-2

Test Menu 5-11

Organization xvii

Overhead Function 2-6

Test Settings C-3

Tests 4-43

TFTP Software Download 4-35

Top Menu 5-5

tray cable

installing DC power 3-4

Troubleshooting 6-4

TROUBLESHOOTING THE DL3800E 6-3

Payload Loopback 4-44, 5-15

Payload Loopback and Line Loopback Tests 6-3

PHYSICAL CONNECTORS A-4

pin assignment

communication port B-5

DB-25 to DC-37 port B-4

DC-37 to DB-25 DCE B-5

pin assignments

channel 1 data cable B-2

Possible Sources of Problems 6-3

POWER A-3

Unit Configuration 4-17

Unit Settings C-1

power

Up Arrow and Down Arrow Buttons 5-2

-48 VDC (DC power) 3-4

DC 3-3

Warning! 3-4

Warning!

power 3-4

power up 3-4

Power Up And Reset 5-5

Product Features 2-2

X.21 to DB-25 Cable Pinouts B-7

RAM Software Options 4-34

RAM Software Options - Activate RAM Software 4-

RAM Software Options - Query RAM Software 4-

Restart Node Software 4-36

RS-449, DB-25 to DB-25 DTE Connector Pin

Assignments B-3

Running Diagnostic Tests 6-1

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