Paradyne 7511 Manual de usuario

MODEL 7511

DUAL DSU

USER’S GUIDE

Document No. 7511-A2-GB20-00

June 1997

Printed on recycled paper

A 7511-A2-GB20-00

June 1997

Printed in U.S.A.

Notice

This publication is protected by federal copyright law. No part of this publication may be copied or distributed,

transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form

or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the

express written permission of Paradyne Corporation, 8545 126th Avenue North, P.O. Box 2826, Largo,

Florida 33779-2826.

Paradyne Corporation makes no representation or warranties with respect to the contents hereof and specifically

disclaims any implied warranties of merchantability or fitness for a particular purpose. Further, Paradyne Corporation

reserves the right to revise this publication and to make changes from time to time in the contents hereof without

obligation of Paradyne Corporation to notify any person of such revision or changes.

Changes and enhancements to the product and to the information herein will be documented and issued as a new

release to this manual.

Trademarks

All products and services mentioned herein are the trademarks, service marks, registered trademarks or registered

service marks of their respective owners.

Warranty, Sales, and Service Information

Contact your sales or service representative directly for any help needed. For additional information concerning

warranty, service, repair, spare parts, installation, documentation, or training, use one of the following methods:

Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com

Via Telephone: Call our automated call system to receive current information via fax or to speak with a

company representative.

— Within the U.S.A., call 1-800-870-2221

— International, call 727-530-2340

7511-A2-GB20-00 June 1997

Contents

About This Guide

Document Purpose and Intended Audience iii. . . . . . . . . . . . . . . . . . . . . . . . .

Document Summary iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product-Related Documents iv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1About the Dual DSU

Model 7511 Dual DSU Features 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DSU Configurations 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2Configuring and Installing the DSUs

Configuring the Dual DSU 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the Rear Connector Plate 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the DSU Card 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the Network and DTE Cables 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . .

3Monitoring the DSUs

Selecting a DSU 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel LEDs 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Initialization 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LED Groups 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Status LEDs 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Network LEDs 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DSU Selection LEDs 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Port 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4Testing

Selecting a DSU 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Local Loopback 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CSU or External Network Loopback 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Digital Loopback (DL) and Remote Loopback (RL) 4-3. . . . . . . . . . . . . . . . . .

Ending an Active Test 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

ii 7511-A2-GB20-00

June 1997

5Troubleshooting

Troubleshooting 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ACables and Pin Assignments

Overview A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RJ48T 50-Pin Network Interface Connector A-1. . . . . . . . . . . . . . . . . . . . . . . . .

Digital Network (DDS) Connector A-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V.35 DTE Connector A-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

BTechnical Specifications

Glossary

Index

iii

7511-A2-GB20-00 June 1997

About This Guide

Document Purpose and Intended Audience

This guide contains information needed to set up, configure, and operate the

Model 7511 DSU and is intended for installers and operators.

Document Summary

Section Description

Chapter 1

About the Dual DSU.

Describes the DSU features and

shows examples of typical configurations.

Chapter 2

Configuring and Installing the DSUs.

Provides procedures

for setting up and installing the DSU card.

Chapter 3

Monitoring the DSUs.

Describes monitoring details about

the LEDs, DSU status, and network statistics.

Chapter 4

Testing.

Provides details about available tests and test

setup.

Chapter 5

Troubleshooting.

Provides information on device

troubleshooting.

Appendix A

Cables and Pin Assignments.

Contains connector and

interface details.

Appendix B

Technical Specifications.

Contains physical and regulatory

specifications of the DSU.

Glossary Defines acronyms and terms used in this document.

Index Lists key terms, acronyms, concepts, and sections in

alphabetical order.

About This Guide

iv 7511-A2-GB20-00

June 1997

Product-Related Documents

Document Number Document Title

3000-A2-GA31

COMSPHERE 3000 Series Carrier

Installation Manual

3000-A2-GZ47

Network Interface Cable, Network Interface Module

Installation

7511-A2-GN10

Model 7511 Dual DSU Startup Instructions

To order additional product documentation, refer to

Warranty, Sales, and Service

Information

on page A at the beginning of this User’s Guide.

1-1

7511-A2-GB20-00 June 1997

About the Dual DSU 1

Model 7511 Dual DSU Features

The DSU provides an interface between the customer premises equipment (CPE)

and a Digital Data Service (DDS) network.

The DSU’s features and capabilities include:

Two DSUs on one card. Permits up to 32 DSUs in one 3000 Series carrier.

Easy Installation. Connects to your equipment using standard connectors

and cables.

Easy Configuration. Simple hardware strapping minimizes your

customization effort.

DDS Operation. Operates at 56 and 64 kbps CC (clear channel).

Local Area Data Set (LADS) Operation. Operates at 56 and 64 kbps

full-duplex as a limited-distance modem.

Diagnostics. Lets you diagnose device and network problems with digital

loopbacks and pattern tests.

Interoperability. Line-compatible with Model 3510, 3511, 3550, 3551, 3610,

3611, 3615, 3616, 7510, 7610 and 7612 DSUs on the DDS Primary Channel.

Reliability. The 7511 Dual DSU’s Mean Time Between Failures (MTBF) is

over 30 years.

About the Dual DSU

1-2 7511-A2-GB20-00

June 1997

DSU Configurations

As shown in the following illustration, each DSU can be used in a multipoint

network configuration across a DDS network.

DDS

Network

97-1550

DTE

DSU

DTE

Model 7511 DSU

in 3000 Series Carrier

DSUs can also be used for point-to-point DDS or frame relay applications.

Frame

Relay

Network

97-1536

DTE

DSU

DTE

Model 7511 DSU

in 3000 Series Carrier

DSUs can be connected back-to-back to act as Local Area Data Sets. Table B-2

in Appendix B shows the maximum distances for LADS applications.

97-15364

DSU

DTE

DSU

DTE

Model 7511 DSU

in 3000 Series Carrier

56 or 64 Kbps

DTE 56 or 64 Kbps

2-1

7511-A2-GB20-00 June 1997

Configuring and Installing

the DSUs 2

Configuring the Dual DSU

!HANDLING PRECAUTIONS FOR

STATIC-SENSITIVE DEVICES

The Model 7511 Dual DSU is designed to protect sensitive components

from damage due to electrostatic discharge (ESD) during normal

operation. When performing installation procedures, however, take

proper static control precautions to prevent damage to equipment. If

you are not sure of the proper static control precautions, contact your

nearest sales or service representative.

Procedure

To configure the Model 7511 Dual DSU:

1. Review Table 2-1 to determine the proper settings for your environment.

The first choice for each option (shown in boldface type) is the factory

default setting. If you choose the factory default value, you do not need to

change the position of the associated switch.

The factory default setting for all switches is Off.

2. Mark any options in the table that you wish to differ from the factory default.

3. Using Figure 2-1 and Table 2-1, verify that the switch settings for both DSUs

on the 7511 card match your selections.

Do not modify the settings of switches not listed in the table. Any switch

not designated for customer use should be in the Off position.

4. Where required, verify that the local and remote DSUs employ the same

options. For example, both the local and remote DSU must use the same

Line Rate and 64CC Data Scrambler settings.

496-15104

Configuring and Installing the DSUs

2-2 7511-A2-GB20-00

June 1997

97-15396

12345678

S3 S4

Figure 2-1. Model 7511 Switch Locations

Table 2-1. Configuration Options (1 of 5)

Switch Options and Usage Default in Bold

Line Rate

S1-1 (DSU A)

S3-1 (DSU B)

S1 S2

S3 S4

DSU A

DSU B

ON ON

DDS or LADS line rate.

Off 56 kbps

The line rate is 56 kbps.

ON 64 kbps

LADS: The line rate is 64 kbps.

DDS: The line rate is 64 kbps clear channel.

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