General DataComm DeskTop T1 Manual del propietario

Data Service Unit

DeskTop T1

GDC 048R154-000-01

Issue 1 - October 1997

Installation and Operation

General DataComm

Table of Contents

GDC 048R154-000

Preface

1 Technical Overview

Overview............................................................................1-1

DT T1 DSU Features.........................................................1-1

Description.........................................................................1-2

Fractional T1 Capabilities..................................................1-2

DTE Interface.....................................................................1-3

2 Installation

Overview............................................................................2-1

Unpacking and Handling ...................................................2-1

Preoperational Check.........................................................2-1

Option Selection.................................................................2-2

Timing Options............................................................2-2

Connections......................................................................2-13

DTE Interface Port Connection.................................2-13

Network Connection..................................................2-13

Primary Power Connection........................................2-15

Terminal Connection.................................................2-15

3 Operation

Overview............................................................................3-1

Controls and Indicators ......................................................3-1

Terminal Interface..............................................................3-3

Configuration...............................................................3-3

Diagnostics ..................................................................3-8

ii Table of Contents

GDC 048R154-000

Monitor ......................................................................3-10

What Are You?..........................................................3-12

4 Tests

Overview............................................................................4-1

Terminal Interface Test Procedure.....................................4-4

Network QRSS Self Test ...................................................4-8

Network Payload Loopback.............................................4-10

Network Line Loopback ..................................................4-11

Network Local Test..........................................................4-13

Network Local Test with QRSS Self Test.......................4-13

Network Remote Test ......................................................4-14

Network Remote Test with QRSS Self Test....................4-16

DTE Self Test...................................................................4-17

DTE Local Loopback.......................................................4-19

DTE Digital Loopback.....................................................4-21

DTE Remote Digital Loopback .......................................4-21

DTE Remote Digital Loopback with Self Test................4-23

A Technical Characteristics

B DTE Interface Signals

C Timing Options

D Alarm Definitions

Table of Contents iii

GDC 048R154-000

Figures

2-1 Position of Configuration Option Switchbanks..........2-3

2-2 Back Panel Connectors...............................................2-13

2-3 EIA-530 Interface Daughter Card Installation............2-14

3-1 DT T1 Front Panel Controls and Indicators................3-2

3-2 Configuration Screen, with Default Settings..............3-4

3-3 Diagnostics Selection Screen......................................3-9

3-4 Diagnostics Results Screen.........................................3-10

3-5 Monitor Screen ...........................................................3-11

3-6 What Are You? Screen ...............................................3-12

4-1 Fault Isolation Procedure............................................4-3

4-2 Diagnostics Selection Screen......................................4-4

4-3 Diagnostics Results Screen.........................................4-7

4-4 Data Path for Network End-to-End Self Test .............4-9

4-5 Network End-to-End Self Test, Front Panel Control..4-9

4-6 Data Path for Network Payload Loopback .................4-11

4-7 Data Path for Network Line Loopback.......................4-12

4-8 Network Line Loopback, Front Panel Control ...........4-12

4-9 Data Path for Network Local Test..............................4-13

4-10 Network Local Test, Front Panel Control...................4-14

4-11 Data Path for Network Remote Test...........................4-15

4-12 Network Remote Test, Front Panel Control ...............4-15

4-13 Data Path for Network Remote Test with Self Test ...4-16

4-14 Network Remote Test with Self Test,

Front Panel Control.....................................................4-17

4-15 Data Path for DTE End-to-End Self Test ...................4-18

4-16 DTE End-to-End Self Test, Front Panel Control........4-19

4-17 Data Path for DTE Local Loopback...........................4-20

4-18 DTE Local Loopback, Front Panel Control................4-20

iv Table of Contents

GDC 048R154-000

4-19 Data Path for DTE Digital Loopback.........................4-21

4-20 Data Path for DTE Remote Digital Loopback............4-22

4-21 DTE Remote Digital Loopback,

Front Panel Control.....................................................4-22

4-20 Data Path for DTE Remote Digital Loopback

with Self Test ..............................................................4-23

4-21 DTE Remote Digital Loopback with Self Test,

Front Panel Control.....................................................4-24

Tables

1-1 Equipment List............................................................1-4

2-1 Option Application Notes – Switchbank S13,

CSU Characteristics....................................................2-4

2-2 Option Application Notes – Switchbank S14,

Network Characteristics..............................................2-6

2-3 Option Application Notes – Switchbank S15,

DTE Characteristics....................................................2-8

2-4 Option Application Notes – Switchbank S10,

DTE Characteristics....................................................2-9

2-5 Option Application Notes – Switchbanks S11 & S12,

DS0 Assignments........................................................2-10

2-6 DTE Data Rate Selection – Switchbank S12..............2-11

2-7 DTE Starting DS0 Selections – Switchbank S11 .......2-12

3-1 DT T1 Configuration Option Settings........................3-5

Preface

GDC 048R154-000

Scope

This manual describes how to install and configure a General

DataComm Desktop T1 Data Service Unit. It is written for installers,

servicetechnicians,andusers.Itassumesa workingknowledgeofdata

interfaces, and T1 and Fractional T1 data transmission services.

Revision History

This is the initial issue of the manual.

Organization

Thismanual has four chaptersandfour appendices. Theinformationis

arranged as follows:

•Chapter 1 - Technical Overview describes the Data Service Unit,

its features, and its options. This chapter contains the Equipment

List table.

•Chapter2 -Installation providesdirectionsfor installingtheDSU

and configuring it by means of the switchbanks located on the pc

board.

•Chapter 3 - Operation describes the use of both the DSU front

panel controlsandindicators,andthe VT100-compatibleterminal

interface that can be accessed through the Console port.

•Chapter 4 - Tests describes tests that can be performed on the

DSU.

•Appendix A - Technical Characteristics

•Appendix B - DTE Interface Signals lists pin/signal assignments

for thetwo DTE interfaces that theDSUcansupport: ITU-T V.35

and EIA-530.

•AppendixC - Timing Options illustratesthearrangementsthat can

vi Preface

GDC 048R154-000

be used to provide transmit timing for the DSU.

•Appendix D - Alarm Definitions identifies the conditions that can

cause the DSU to generate an alarm.

Document Conventions

Level 1 paragraph headers introduce major topics.

Level 2 paragraph headers introduce subsections of major

topics.

Level 3 paragraph headers introduce subsections of sec-

ondary topics.

This typewriter font shows output that

is displayed on the screen.

This bold font shows specific input that

you type at the keyboard.

This bold italicized font shows variable

input that you type at the keyboard.

Service and Support

General DataCommiscommitted toproviding theservice and support

needed to install, manage, and maintain your equipment. For

informationaboutserviceprogramsorforassistancewithyoursupport

requirements, contact your local Sales Representative or call General

DataComm Service at the 24-hour, toll-free number listed below.

• in the U.S. dial 1-800-243-1030

• outside the U.S. dial 1-203-598-7526

Notes present special instructions, helpful hints or

general rules.

NOTE

Preface vii

GDC 048R154-000

Be ready with the site name and phone number, and a description of

the problem. The next available support representative will promptly

return your call.

Hands-ontraining courses areprovidedbyGDCEducationalServices.

Courses range from basic data communications, modems and

multiplexers,to complex networkand ATMsystems and aretaught in

Connecticutor at a customer location.To discusseducationalservices

orreceivea course schedule,call1-800-243-1030andfollowthemenu

instructions.

Safety Instructions

Antistatic Precautions

Electrostatic discharge (ESD) results from the buildup of static

electricity and can cause computer components to fail. Electrostatic

discharge occurs when a person whose body contains a static buildup

touches a computer component.

The equipment may contain static-sensitive devices that are easily

damaged, so proper handling and grounding are essential. Use ESD

precautionary measures when installing parts or cards, and keep the

parts and cardsin antistaticpackagingwhen notinuse. Ifpossible, use

antistatic floor pads and workbench pads.

When handling components or setting switch options always use an

antistatic wrist strap connected to a grounded equipment frame or

chassis. If a wrist strap is not available, periodically touch an

unpainted metal surface on the equipment. Never use a conductive

tool, such as a screwdriver or a paper clip, to set switches.

Safety Guidelines

The following symbols are used in this manual to draw your attention

to potential hazards. A Caution indicates a hazard to equipment or

data. A Warning indicates a hazard to personnel.

viii Preface

GDC 048R154-000

Always use cautionandcommon sense. Toreducetherisk of electrical

shock,do not operate any equipment with the cover removed.Repairs

must be performed by qualified service personnel only.

Regulatory Notices

FCC Part 68 Compliance

Connectionofdatacommunicationsequipmenttothe public telephone

network is regulated by FCC Rules and Regulations. This equipment

complies with Part 68 of these regulations which require all of the

following:

Allconnectionstothetelephonenetworkmustbemadeusingstandard

plugs and telephone company provided jacks or equivalent.

Connection of this equipment to party lines and coin telephones is

prohibited.A label on thebottom of the DT T1 enclosure providesthe

FCC Registration number for the unit. If requested, give this

information to the telephone company.

To connect the DeskTop T1 DSU to the Public Telephone Network

you are required to give the following information to the Telephone

Company:

FCC Registration Number: AG6USA-24144-DE-N

FIC (Facility Interface Code):04DU9-DN,04DU9-BN,04DU9-1KN,

04DU9-1SN

Caution statements identify conditions or practices that

can result in damage to the equipment or in loss of data.

Warning statements identify conditions or practices that

can result in personal injury or loss of life.

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