ADTRAN 25 User Manual
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AT&T

AT&T System 25

Installation and

Maintenance Manual

555-540-103B

November 1995

©1989 AT&T

All Rights Reserved

Printed in USA

TO ORDER COPIES OF THIS DOCUMENT REFER TO DOCUMENT NUMBER 555-540-103

Contact: Your AT&T sales representative, or

Call: 800-432-6600,Monday through Friday between 7:30 am and 6:00 pm EST, or

In Canada call: 800-255-1242

Write: AT&T Customer Information Center

2855 North Franklin Road

P.O. Box 19901

Indianapolis, Indiana 42619

Every effort was made to ensure that the information in this document was complete and accurate at the time of printing. However, this information is subject to change. This document will be reissued periodically to incorporate changes.

Installation and Maintenance Manual

Prepared by System 25

Document Development Group and the

AT&T Documentation

Management Organization

DANGER

Do not open the fan assembly or remove rear cabinet cover before unplugging the cabinet from the electrical outlet. Wait at least five minutes after unplugging the power cord before removing the rear cover or power supply. The AT&T System 25 cabinets are not user serviceable. Some voltages inside the cabinets are hazardous. This equipment is to be serviced only by qualified technicians.

CUSTOMER WARNING

The Installation and Maintenance Manual is designed for use b y qualified service technicians only. Technician qualification includes completion of an AT&Thands-oninstructor-ledcourse covering installation and maintenance for this product. The use of these documents by anyone else might void the warranty.Hazardous electrical voltages are present inside this product.

SERVICE TECHNICIAN WARNING

1.Never install telephone wiring during a lightning storm.

2.Never install telephone jacks in wet locations unless the j a c k is specifically designed for wet locations.

3.Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.

4.Use caution when installing or modifying telephone lines.

a

THE FOLLOWING SYMBOLS AND PICTOGRAPHS

APPEAR ON THE EQUIPMENT

SYMBOL

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions

ELECTRICAL SHOCK

Warns of the danger of electrical shock

from hazardous voltages present within the control unit

Warns of the risk of

f i r e i f t h e a i r f i l t e r is not in place

b

FCC NOTIFICATION AND REPAIR INFORMATION

AT&T SYSTEM 25

This telephone equipment is registered with the Federal Communications Commission (FCC) in accordance with Part 68 of its Rules. In compliance with the Rules, be advised of the following:

MEANS OF CONNECTION

Connection of this telephone equipment to the nationwide telecommunications network shall be through a standard network interface USOC RJ21X jack. Connection to private line network channels requires USOC RJ2GX jack for tie lines or USOC RJ21X jack for off-premisesstation lines. Connection to T1 facilities requires USOC RJ48X or RJ48C jack. These can be ordered from your telephone company.

NOTIFICATION TO THE TELEPHONE COMPANY

If the system is to be connected to off-premisesstations (OPSs), you must notify the telephone company of the OPS class of service, OL13C, and the service order code, 9. OF. For R3 systems, the Analog service order code is 9.0Y, the Digital service order code is 6.0Y.

Upon the request of the telephone company, inform them of the following:

The Public Switched Network “lines” and the Private “lines” to which you will connect the telephone equipment.

For private line connections, provide the facility interface code, TL31M for tie lines. You must also specify the service order code, 9.0F or 9.0Y for R3 systems.

Customer instructions will advise the customer to provide the telephone company with the registration number (either -MFor-KF,depending on the application of the system) and the ringer equivalency number (REN) from the label on the equipment. In addition, customer will be advised

c

that certification in writing may be required when an existing multifunction system is being reconfigured as a Key system, if the customer desires the lower rate.

For Digital connections with D4 Framing Format provide the Facility interface code 041DU9-B,for digital connections with Extended Framing Format, provide the Facility interface code04DU9-C.You must also specify the service order code, 6.0Y.

The quantities and USOC numbers of the jacks required.

For each jack, provide the sequence in which lines are to be connected; the type lines and the facility interface code and the ringer equivalence number by position, when applicable.

This telephone equipment should not be used on coin telephone lines. Connection to party line service is subject to state tariffs.

REPAIR INSTRUCTIONS

If you experience trouble with this telephone equipment, contact the AT&T Business Customer Service Center on 1-800-242-2121.The telephone company may ask that you disconnect this equipment from the network until the problem has been corrected or until you are sure that this equipment is not malfunctioning.

System 25 troubles that must be escalated to a higher level of maintenance should be referred to the National Service Assistance Center on 1-800-628-2888.

RIGHTS OF THE TELEPHONE COMPANY

If your telephone equipment causes harm to the telephone network, the telephone company may discontinue your service temporarily. If possible, they will notify you in advance. But if advance notice isn’t practical, you will be notified as soon as possible. You will be informed of your right to file a complaint with the FCC.

d

Your telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the proper functioning of your equipment. If they do, you will be notified in advance to give you an opportunity to maintain uninterrupted telephone service.

HEARING AID COMPATIBILITY

The voice terminals described in this manual are compatible with inductively coupled hearing aids as prescribed by the FCC.

FCC INFORMATION

FCC REGISTRATlON lNFORMATlON

Registration Number

AS593M-71565-MF-E

Ringer Equivalence

0.5A

Network Interface

RJ21X, RJ2GX or RJ48X

 

 

PRIVATE LINE SERVICE

 

 

 

 

 

 

 

 

 

Service Order Code

 

 

 

 

 

 

 

 

 

 

 

Analog

 

 

 

9.0F

 

 

 

 

 

 

 

 

Analog

(R3)

 

9.0Y

 

 

 

 

 

 

 

 

 

Digital

(R3)

I

6 . 0 Y

 

 

 

 

 

 

 

 

Facility

Interface Code

 

 

 

 

 

 

 

 

 

 

 

Tie Lines

 

 

TL31 M

 

 

 

 

 

 

 

Off-PremisesStations

 

OL13C

 

 

 

 

 

 

 

 

Digital D4

Framing

 

04DU9-B

 

 

 

 

 

 

 

 

 

Digital

ESF

 

04DU9-C

 

 

 

 

 

 

 

 

 

November 1995

FCC WARNING STATEMENT

Federal Communicatlons Commission (FCC) Rules require that you be notified of the following:

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause interference to radio communications.

It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment.

Operation of this equipment in a residential area is likely to cause interference in which case the user at his or her own expense will be required to take whatever measures may be required to correct the interference.

SECURITY OF YOUR SYSTEM-PREVENTINGTOLL FRAUD

As a customer of a new telephone system, you should be aware that there exists an increasing problem of telephone toll fraud. Telephone toll fraud can occur in many forms, despite the numerous efforts of telephone companies and telephone equipment manufacturers to control it. Some individuals use electronic devices to prevent or falsify records of these calls. Others charge calls to someone else’s number by illegally using lost or stolen calling cards, billing incorrect parties, clipping on to someone else’s line, and breaking into someone else’s telephone equipment physically or electronically. In certain instances, unauthorized individuals make connections to the telephone network through the use of remote access features.

The Remote Access feature of your system, if you chose to utilize it, permits offpremises callers to access the system from a remote telephone by using an 800 number or a 7- or 10digit telephone number. The system returns an acknowledgement signaling the user to key in his or her authorization code, which is selected and administered by the system manager. After the authorization code is accepted, the system returns dial tone to the user. If you do not program specific egress restrictions, the user will be able to place any call

normally dialed from a telephone associated with the system. Such an offpremises network call is originated at, and will be billed from, the system location.

The Remote Access feature, as designed, helps the customer, through proper administration, to minimize the ability of unauthorized persons to gain access to the network. Most commonly, phone numbers and codes are compromised when overheard in a public location, through theft of a wallet or purse containing access information, or through carelessness (writing codes on a piece of paper and improperly discarding it). Additionally, hackers may use a computer to “dial” an access code and then publish the information to other hackers. Enormous charges can be run up quickly. It is the customer’s responsibility to take the appropriate steps to properly implement the features, evaluate and administer the various restriction levels, protect access codes, and distribute access codes only to individuals who have been fully advised of the sensitive nature of the access information.

Common carriers are required by law to collect their tariffed charges. While these charges are fraudulent charges made by persons with criminal intent, applicable tariffs state that the customer of record is responsible for payment of all long-distanceor other network charges. AT&T cannot be responsible for such charges and will not make any allowance or give any credit for charges that result from unauthorized access.

To minimize the risk of unauthorized access to your communications system:

Use a nonpublished Remote Access number.

Assign authorization codes randomly to users on a “need-to-have”basis, keeping a log of ALL authorized users and assigning one code

per person.

Use random sequence authorization codes, which are less likely to be broken.

Deactivate all unassigned codes promptly.

Ensure that Remote Access users are aware of their responsibility to keep the telephone numbers and any authorization codes secure.

When possible, restrict the off-networkcapability ofoff-premisescallers, via use of Call Restrictions and Disallowed List capabilities.

When possible, blockout-of-hourscalling.

Frequently monitor system call detail reports for quicker detection of any unauthorized or abnormal calling patterns.

Limit Remote Call Forward to persons on a “need-to-know”basis.

Contents

INTRODUCTION

 

1-1

FCC PRECAUTIONS

1-2

INSTALLATION

 

2-1

TOOLS AND TEST EQUIPMENT

2-2

CROSS-CONNECT EQUIPMENT DESCRIPTION

2-3

Trunk Access Equipment

2-4

700A-110-BI -25 or 700A-66-B1-25 Cut-Down Jack

2-4

108 Emergency Transfer Unit (ETU)

2-4

Station

Interconnect Panel (SIP)

2-6

617A

Panel

 

2-6

Adapters

 

2-8

Fanning

Strip

 

2-10

C a b l e s

 

 

 

2-11

Splitter

Cables

 

2-11

Octopus

Cables

2-12

853B

Adapter Cable

2-12

DS1

Connector

Cables

2-12

Cable

Labels

 

2-13

Symbols

Used in

Figures

2-15

PREINSTALLATION REQUIREMENTS

2-16

Table and

Backboard

2-16

Network

Interface

2-16

AC Power

 

2-18

Grounding

 

 

2-18

Lightning

Protection

2-19

Secondary Protection

2-21

Building

Wiring

 

2-22

INSTALL SYSTEM CABINETS

2-23

Position

Cabinet(s)

2-23

Check

Cabinet Contents

2-23

Required Circuit Pack Positions

2-28

Label Connectors on Back Cover

2-28

Install

4A

Retainer Clips

2-29

Connect

 

Cabinet

2-30

TDM Bus Connections.

2-30

Ground

Wire Connections.

2-33

POWER UP AND INITIALIZE SYSTEM

2-33

Connect Power

2-33

Connect Administration Equipment

2-34

Cold Start the System

2-35

Check Performance of Cabinet Components

2-39

Report Problems

2-42

Initialize

System

2-43

INSTALL CROSS-CONNECT EQUIPMENT

2-43

Install TAE, 617A Panels, and Fanning Strips

2-44

Mount 858A orZ210A2 Adapters

2-47

INSTALL MODULAR BULK POWER SUPPLY

2-49

(Optional)

INSTALL EQUIPMENT ROOM TRUNK CABLING

2-49

Connect

Network Interfaces to TAE Blocks

2-49

C o n n e c t C a b i n e t s t o T A E B l o c k s

2-51

Connect Ground Start, Loop Start, and DID Trunks

2-51

Connect Tie Trunks

2-52

Install DS1

2-53

Connect S25 to Another On Premises PBX

2-53

Off Premises Metallic (Cable) Connections

2-56

Off Premises Non Metallic Connections

2-56

Install Customer Service Unit (CSU)

2-57

Line Compensation/Equalization

2-58

Connect Coupled Bonding Conductor (CBC)

2-58

INSTALL EQUIPMENT ROOM STATION CABLING

2-60

Connect Building Wiring to SIP

2-62

Modular Plug Termination

2-62

4-Pair Cable Terminations

2-64

Connect

Cabinets to SIP

2-66

Prepare

Carrier Loading Labels

2-67

Modify Octopus Cables if Required

2-69

Make SIP Connection for CPU/Memory

2-71

Make SIP Connections to Cabinet for 7300H Series

2-73

 

Terminals

Make SIP Connections to Cabinet for MET Sets

2-74

Make SIP Connections to Cabinet for Single-Line Sets

2-74

-ii-

Make SIP Connections for Data Terminals and Computers

Make SIP Connections to Cabinet for ATL Cordless Telephones

Perform SIP Housekeeping

INSTALL EMERGENCY TRANSFER UNITS (ETUs)

Make Emergency Transfer Connections

Install Ground-Start Key

INSTALL ATTENDANT CONSOLE

INSTALL TERMINALS

Label Terminals Stand-Alone Voice Terminals

Stand-Alone Remotely Powered Voice Terminals Single-Line and 7300H Series Voice Terminals With

Associated ADUs ATL Cordless Telephone

Off-Premises Stations (TN742) Out-of-Building Voice Terminals (TN742) Out-of-Building Voice Terminals (ZTN79) Off-Premises— DS1 lnterface Stand-Alone Data Terminals

ADU Connections MADU Connections

INSTALL CUSTOMER’S S A T

Nonswitched Connection of Equipment Plugged Into

System AC Outlet

Nonswitched Connection of Equipment

On-Premises Digital Switched Connection

Off-Premises Nonswitched Connection

Off-Premises Switched Connection

INSTALL CUSTOMER’S DTU

INSTALL STATION MESSAGE DIGITAL RECORDING

(SMDR) EQUIPMENT

INSTALL STARLAN NETWORK INTERFACE

Shared System 25 Voice/STARLAN NETWORK Data C o n n e c t i o n s

Single-Line Voice Terminals

2-75

2-76

2-76

2-77

2-80

2-82

2-83

2-87

2-88

2-90

2-91

2-92

2-94

2-95

2-95

2-96

2-96

2-98

2-98

2-101

2-102

2-102

2-104

2-106

2-109

2-109

2-111

2-111

2-112

2-113

2-113

-III-

7300H Series Voice Terminals

2-115

INSTALL MUSIC-ON-HOLD INTERFACE

2-117

FCC-Registered Music Source Interface

2-117

Non-FCC Registered Music Source Interface

2-119

INSTALL EXTERNAL ALERTS

2-120

INSTALL RECORDED DELAY ANNOUNCEMENT

2-121

 

INSTALL DICTATlON SYSTEM INTERFACE

2-121

INSTALL PAGING SYSTEM INTERFACE

2-121

Direct Connection to TN763 Auxiliary Trunk CP

2-122

Connection to TN763 Auxiliary Trunk CP (278A

2-124

Adapter Required)

Connection to ZTN76 or ZTN77 CP

2-128

 

SYSTEM TESTS

3-1

TEST

OUTGOING TRUNKS

3-1

TEST DS1 INTERFACE.

3-1

TEST INCOMING DID TRUNKS

3-2

TEST INCOMING TIE TRUNKS

3-2

TEST 7300H SERIES VOICE TERMINALS

3-3

TEST SINGLE-LINE VOICE TERMINALS

3-5

TEST ATL CORDLESS TELEPHONE

3-6

TEST DIAL ACCESS CODES

3-6

TEST SYSTEM FEATURES

3-6

ARS

and SMDR Tests

3-6

DGC Test

 

3-7

System Speed

Dialing Test

3-7

PDC

Login

Test

3-8

Call

Coverage

Test

3-8

TEST ATTENDANT CONSOLE

3-9

TEST SELECTOR CONSOLE

3-9

TEST DATA TERMINAL DIALING FEATURE

3-10

-iv-

MAKE POOLED MODEM TEST CALL

. . . .

TEST TRANSFER TO DATA

. . . . ... . . .

TEST EXTERNAL ALERT (NIGHT SERVICE)

TEST DICTATION SYSTEM ACCESS

 

TEST PAGING INTERFACE

 

TEST MUSIC-ON HOLD

 

TEST EMERGENCY TRANSFER

 

TEST TOUCH-TONE RECEIVERS

 

MAINTENANCE

EQUIPMENT NEEDED

Precautions

GENERAL INFORMATION

System Errors and Alarms

Emergency Transfer

Circuit Pack LEDs

Attendant Console LED

Power Supply

Switches and Test Points

System Administration

Remote Initialization Maintenance (RIM) Service

MAINTENANCE STRATEGY

Total System Failures

P o r t P r o b l e m s

Common Control Problems

Staion, Trunk Problems

Antomatic Maintenance Tests

Maintenance Failure

USING THE DIGITAL TAPE UNIT

Setting Up the DTU

Saving Translations

Verifying Translations

Restoring Translations

3-11

3-11

3-12

3-13

3-13

3-14

3-15

3-16

4-1

4 - 4

4 - 4

4 - 4

4 - 4

4 - 6

4 - 6

4 - 6

4 - 6

4 - 6

4 - 9

4-11

4-11

4-12

4-13

4-13

4-13

4-14

4-14

4-15

4-16

4-18

- v -

ROUTINE MAINTENANCE

4-20

Reseating and Replacing Circuit Packs

4-20

Removing

and

Restoring Power

4-22

Restarting

the

System

4-23

ERROR LOG

 

 

 

4-27

Accessing the Error Log From the SAT

4-30

ERROR

MESSAGES

 

4-32

Clearing System-Detected Troubles

4-61

Complete

System

 

Failure

4-61

Common

Control

Trouble

4-61

Circuit

Pack Trouble

4-63

Frontplane

Ribbon

Connector Trouble (Release 1

 

 

O n l y )

 

 

 

4-64

Power

Supply

Trouble

4-64

Power

Supply

Protection

4-69

Power

Supply

Replacement

4-70

Fan Assembly

Trouble

4-71

Overheating

Trouble

4-72

Backplane

and

Cabinet Trouble

4-72

Emergency

Transfer Unit Trouble

4-80

CLEARING USER-DETECTED TROUBLES

4-81

Administration Equipment Troubles

4-81

Time-Keeping Troubles

4-82

Voice Terminal and Wiring Troubles

4-82

Voice

Transmission Troubles

4-83

7300H

Series Terminal Troubles

4-84

Virtual

Facilities

Troubles

4-85

Trunk Troubles

 

 

 

4-89

Outgoing

Trunk

Problems

4-89

Incoming

Trunk

Problems

4-90

Error Log Interpretation: Loop-Start Trunks

4-90

Error Log Interpretation: Ground-Start Trunks

4-91

DID

Trunks

Troubles

4-92

Switched Loop Attendant Console Troubles

4-93

Special Port Circuit Options for Stations and Trunks

4-99

Data

Line

Troubles

4-100

Multiple Troubles

 

or Trouble That Cannot Be

 

 

Diagnosed

 

4-102

-vi-

REFERENCES

ABBREVIATIONS AND ACRONYMS

APPENDIX A: System Wiring Tables

Connector Pin Assignments

System 25 Building Wiring

APPENDIX B: Parts Listing

APPENDIX C: System Additions or Changes

Evaluate Cabinet Unit Power Load

Add Circuit Pack

Add Cabling

Set Option Switches on TN760B CP

Replace Circuit Pack

Add Cabinet

Add Termina

Add Trunk

Add Trunk—DSl Interface

Replace Voice-Only Terminal With Voice/Data

Terminal

Add Pooled Modem Circuit Pack

Add Auxiliary Equipment

APPENDIX D: System Upgrades

APPENDIX E: Administration Codes and Data

D e f a u l t D i a l C o d e A s s i g n m e n t s

5-1

6-1

A-1

A-1

A-1

B-1

C-1

C-1

C-2

C-3

C-5

C-7

C-8

C-10 C-11 C-11

C-12 C-13 C-13

D-1

E-1

E-1

-vii-

APPENDIX F: Administration Error Messages

F-1

GLOSSARY

G-1

I N D E X

I-1

-viii-

Figure 2-1.

Figure 2-2.

Figure 2-3.

Figure 2-4.

Figure 2-5.

Figure 2-6.

Figure 2-6a.

Figure 2-7.

Figure 2-8.

Figure 2-9.

Figure 2-10.

Figure 2-11.

Figure 2-12.

Figure 2-13.

Figure 2-14.

Figure 2-15.

Figure 2-16.

Figure 2-17.

Figure 2-18.

Figure 2-19.

Figure 2-20.

Figure 2-21.

Figure 2-22.

Figure 2-23.

Figure 2-24.

Figure 2-25.

Figure 2-26.

Figure 2-27.

Figure 2-28.

Figure 2-29.

Figure 2-30.

Figure 2-31.

Figure 2-32.

Figure 2-33.

Figure 2-34.

Figure 2-35.

Figure 2-36.

Figures

1 0 B E A U

 

2-5

617A

Panel

2-7

SIP

Adapters

2-9

50A

Fanning Strip

2-10

Splitter Cables

2-11

O c t o p u s C a b l e

2-12

853B Adapter Cable

2-12

Cable

Labels

2-14

Typical System 25 Floor Plan

2-17

AC Power Distribution—Multiple Cabinet System

2-21

Three-Cabinet System, Front View With Covers

 

Removed

 

2-26

Position of Shorting Plugs on CPU/Memory Circuit

 

Pack................

 

 

 

2-27

4A Retainer Clip Installation

2-29

TDM Bus Terminations (Rear View of 3-Cabinet

 

System)

 

 

2-32

Temporary SAT and DTU Connections

2-34

Typical System 25 Port Circuit Pack

2-42

SIP and TAE Backboard Layout

2-45

Alternate SIP and TAE Backboard Layout

2-46

Mounting

Adapters

2-48

Direct Connection (Side by Side)

2-54

Direction Connection (Side by Side)

2-54

DS1 Connections—1311 to 4310 Feet

2-55

DS1 mnnections4311 Feet or More

2-55

DS1 Connections–Off Premise Cabling

2-56

DS1 Connections-Non Metallic Connections

2-57

CSU

Connections

2-58

Voice and Data Station Records Form (Example

 

Entered)

 

2-61

Modular Plug Terminations Connected to the SIP

2-63

Cut Down Terminations Connected to the SIP

2-65

Carrier

Loading Label

2-68

Standard and Modified Octopus Cables

2-70

Mounting Octopus Cable on Fanning Strip

2-72

10B Emergency Transfer Unit

2-78

Emergency

Transfer Unit Connections

2-79

Ground

Start Key Installation

2-82

Attendant Console With DXS Console

2-84

Remotely Powered DXS Console Connection

2-86

November 1995

-ix-

Figure

2-37.

Stand-Alone Voice Terminal Connections

2-90

Figure

2-38.

Stand-Alone Remotely Powered Voice Terminal

 

 

 

Connections

2-91

Figure

2-39.

Single-Line Terminal/ADU Connections

2-93

Figure

2-40.

7300H Series Terminal/ADU Connections

2-94

Figure

2-41.

DS1 to D4 Connections for Off-Premises Stations 2-97

Figure

2-42.

Local Powering of an ADU

2-99

Figure

2-43.

Remote Powering of an ADU (Optional)

2-100

Figure

2-44.

MADU to Host Computer or Terminals Connections 2-101

Figure

2-45.

Nonswitched Connection of Peripheral Equipment

 

Figure

2-46.

Plugged Into System AC Outlet

2-103

 

 

 

 

Greater Than 50 Feet and/or Not Sharing Same

2-105

Figure 2-47.

AC Outlet

On-Premises Peripheral Equipment With Switched

 

Figure 2-48.

Connection to CPU/Memory

2-108

Off-Premises Peripheral Equipment With Direct

2-110

Figure

2-49.

Connection to CPU/Memory

ZTN84 STARLAN Interface CP Connection

2-112

Figure 2-50.

Single-Line Analog Terminal/STARLAN

 

 

 

NETWORK Workstation Connections

2-114

Figure 2-51.

7300H Series Terminal/STARLAN NETWORK

 

Figure 2-52.

Workstation Connections

2-116

Music Source, FCC Registered

2 - 118

Figure 2-53.

Music Source, Non-FCC Registered

2-119

Figure 2-53a.

Music-on-Hold

2-119a

Figure 2-54.

External Alerts

2-120

Figure 2-55.

Paging System Connection to TN763 Circuit Pack 2-123

Figure 2-55a.

Loudspeaker Paging with Background

 

 

 

Music

2-124a

Figure

2-56.

Paging System Connection to TN763 Circuit Pack

 

Figure

2-57.

(278A Adapter Required)

2-126

278A Adapter Plug Positions for Connecting TN763

2-127

 

 

Circuit Pack to Paging System

Figure 2-58.

PagePac 20 System Connection to ZTN76 or

2-129

 

 

ZTN77 Circuit Pack

Figure 2-59.

Paging System Connection to ZTN76 or ZTN77

2-131

Figure 4-1.

Response to System 25 Trouble Report

4-10

Figure 4-2.

Clearing Power Supply Troubles (Sheet 1 of 4-47

Figure 4-3.

Clearing CO Trunk Troubles

4-49

Figure 4-4.

Clearing 4-Wire Tie Trunk Troubles (Sheet 1 of 4)

4-50

Figure 4-5.

Clearing STARLAN Interface Troubles

4-54

Figure 4-6.

Clearing Tie Trunk Troubles (Sheet 1 of 5) 4-55

Figure 4-7.

Clearing Paging Equipment Troubles

4-60

-x-

November 1995

Figure

4-8.

AC Power Schematic

 

 

4-68

Figure

4-9.

System Cabinet Backplane Wiring Side (Sheet 1

 

 

 

of 2)

 

 

4-73

Figure

4-10.

TDM Signal Destinations on Cabinet

Backplane

4-75

Figure

4-11.

P o w e r D e s i g n a t i o n s

o n C a b i n e t

B a c k p l a n e

4 - 7 6

Figure 4-11.a.

853 Adapter

 

 

4-79a

Figure

4-12.

Clearing Virtual Facilities Troubles (Sheet 1 of 3)

4-86

Figure

4-13.

Clearing Switched Loop Attendant Console

 

 

 

 

Troubles (Sheet 1 of 5)

 

 

4-94

Figure

C-1.

Typical System 25 Port Circuit Pack

 

C - 4

Figure

C-2.

Tie Trunk (TN760B) Circuit Pack Option Switches

C-5

Figure

C-3.

DS1 Network Interface Connections

 

C-12

 

 

Tables

 

 

 

Table 2-A.

Tools and Test Equipment Required for

 

 

 

 

Installation

 

 

2 - 2

Table 2-B.

Circuit Packs, Their Functions, and Protectors

2-24

Table 2-C.

Displayed SAT Messages During Cold or Warm

 

 

 

Restart

 

 

2-37

Table 2-D.

Circuit Pack LED Status Indications

 

2-40

Table 2-E.

Circuit Pack Versus Terminal Type

 

2-66

Table 2-F.

Feature Button Abbreviations and Lables

 

2-88

Table 4-A.

Displayed SAT Messages During Cold or Warm

 

 

 

Start

 

 

4-25

Table 4-B.

Power Supply Test Points

 

 

4-65

Table 4-C.

Circuit Pack Voltages—Symptoms

 

4-66

Table 4-D.

25 - Pair Connector to Backplane Designations

4 - 78

Table 4-E.

Station/Trunk/Special Port Circuit Pack Options

4-99

Table 4-F.

Applicable Actions for Circuit Pack Options

4-

Table A-A.

100

 

 

 

25-Pair Connector Pin Assignments

 

A - 2

Table A-B.

Building Wiring

 

 

A - 4

Table A-A.

25-Pair Connector Pin Assignments

 

A - 2

Table A-B.

Building Wiring

 

 

A - 4

Table C-A.

Unit Loads

 

 

C-2

Table C-B.

TN760B Option Switch Settings and

 

 

 

 

Administration

 

 

C - 6

Table E-A.

Default Dial Codes

 

 

E-1

Table E-B.

PORT/PD. Administration,

Voice Terminals

 

 

 

(Menu=1/2)

 

 

E - 2

November 1995

-xi-

Table E-C.

Voice Terminal Type Codes

E-13

Table E-D.

Feature Button Translation (Menu=1/2)

E-14

Table E-E.

Multiline Voice Terminal Button Defaults

E-17

Table E-F.

Switched Loop Attendant Console Button

E-18

 

Defaults (Type 310)

 

Table E-G.

Switched Loop Attendant Console Button

E-19

..

Defaults (Type 311)

 

Table E-H.

Direct Trunk Attendant Console Button Defaults

E-20

 

(Cold-Start Defaults)

 

Table E-1.

Direct Trunk Attendant Console Defaults

E-21

 

(Administration-lnstalled Defaults)

Table E-J.

MET

Set Button Defaults

 

E-22

Table E-K.

PORT/PDC Administration, Data Terminals

 

 

(Menu=1/2)

 

E-23

Table E-L.

Data

Port Type Codes

 

E-25

Table E-M.

Port

Administration, Trunks (Menu=1)

E-26

Table E-N.

Trunk Type Codes

 

E-28

Table E-0.

Trunk Class-of-Service (for all trunks except DID)

E-29

Table E-P.

Port Administration, Auxiliary Equipment

 

 

(Menu=1)

 

E-30

Table E-Q.

Special Feature Port Type Codes

E-32

Table E-R.

Port

Options

 

E-33

Table E-S.

Applicable Options

 

E-34

Table E-T.

PDC Administration (Menu=2)

E-35

Table E-U.

High

Density Circuit (Menu=3)

E-35

Table E-V.

System Administration (Menu=4)

E-36

Table E-W.

Standard Call Type Defaults

E-42

Table E-X.

Message-Center-Like Call-Type Defaults (effect

 

 

of Action 90)

 

E-43

Table E-Y.

Floating PDC Administration (Menu=5)

E-43

Table E-Z.

Direct Group Calling (DGC) Administration

 

 

(Menu= 6)

 

E-44

Table E-AA.

Toll Calls Allowed (TCA) List Administration

 

 

(Menu= 7)

 

E-44

Table E-AB.

DGC Announcement Administration

E-45

Table E-AC.

Searches: Action Items (Menu=8)

E-46

Table E-AD.

Board Type—Wildcard Representation

E-50

Table E-AE.

Port/Board Type—Specific Representation

E-51

Table E-AF.

Save/Restore and System Restarts (Menu=9)

E-54

Table E-AG.

RS232 Port Administration

(Menu=10)

E-55

Table E-AH.

Automatic Route Selection

Administration

E-56

 

(Menu=11)

 

-xii-

November 1995

INTRODUCTION

INTRODUCTION

This manual provides procedures and information for installing, and testing the AT&T System 25 Release 3 and associated equipment. The maintenance information contained in Section 4 pertains to the AT&T System 25 Release 1, Versions 1 and 2 (RI VI and R1V2), Release 2, Version 1 (R2V1 ), as well as to AT&T System 25 Release 3, Version 1,2 and 3 (R3V1, R3V2 and R3V3).

Installation and maintenance procedures for the AT&T System 25 Call Management System and Integrated Solution are provided in a separate set of documents for each system.

This manual is intended for use by an installation and/or maintenance technician dispatched to a System 25 site for an installation or in response to an alarm or a user trouble report. This technician must have completed the Tier 1 training course (T-335).Each installed System 25 has acustomer-designatedSystem Administrator. The technician should work closely with this System Administrator. The System 25 Administration(555-540-500)and Implementation(555-540-650)Manuals describe the administrator’s functions.

In the S25 documentation, the terms “voice terminal”, “voice stations”, and “telephone” are used to describe the same piece of hardware. The S25 documentation also uses the terms ‘Personal Dial Code (PD.)”, and ‘extension number’ interchangeably.

The remainder of this manual is divided into Sections 2 through 6 and six appendices:

Section 2. Installation-Describesthe installation of the cabinet(s) wiring, and other components. Certain preinstallation requirements must be met; therefore, read “PREINSTALLATION REQUIREMENTS” before installing any part of System 25.

Section 3. SystemTest—Describesall the tests necessary to verify that the system is operating correctly.

Section 4. Maintenance — Provides information necessary for monitoring, testing, and maintaining all releases of AT&T System 25.

November 1995

1-1

INTRODUCTION

Section 5 References-Listsand describes other related documentation

Section 6 Abbreviations andAcronyms-Listsand describes abbreviations and acronyms frequently encountered in System 25 documentation

Appendix A. System WiringTable–Listspinouts and wiring used with System 25

Appendix B. PartsListing—Listsall related parts of System 25

Appendix C. System Additions andChanges-Describeshow to make additions to an existing system

Appendix D. SystemUpgrade–Describeshow to upgrade an R1V1 R1V2 or R2V1 release of System 25 to an R3 release

Appendix E. System Codes and DataEntries–Listsall default codes and data entries for administering the system

Appendix F. AdministrationTables–Listsall error messages that can occur when the system is being administered

FCC PRECAUTIONS

Electromagnetic fields radiating from the system cabinets may generate noise in other communications equipment The technician must be sure that all cabinet panels and covers are securely in place after performing maintenance

Caution: Electrostatic discharge can destroy or severely damage integrated circuits or CPs.

The maintenance technician MUST ALWAYS WEAR A WRIST GROUNDING STRAP when handling CPs The cord must be attached to the grounding block at the back of the cabinet or to a front-coverretainer screw Damage to integrated circuits caused by electrostatic discharge may not be immediately apparent

Caution: The wrist grounding strap must not be clipped to any cabinet location other than the grounding block.

1-2

November 1995