AT&T System 75, System 75 XE Wiring Diagram

AT&T

AT&T System 75 and System 75 XE

Wiring

AT&T

AT&T System 75

and System 75 XE

Wiring

555-200-111

Issue 2, August 1989

TO ORDER COPIES OF THIS MANUAL

Call:

AT&T Customer Information Center on 800-432-6600 In Canada Call 800-255-1242

Write:

AT&T Customer Information Center 2855 North Franklin Road P.O. Box 19901 Indianapolis, Indiana 46219-1385

TO COMMENT ON THIS MANUAL

Call: The AT&T Document Development Organization

Hot Line:

800-334-0404

In North Carolina Call 919-727-3167

While reasonable efforts were made to ensure that the information in this document was complete and accurate at the time of printing, AT&T can assume no responsibility for errors. Changes or corrections to the information in this document may be incorporated into future reissues.

Published by The AT&T Documentation Management Organization

Printed in U.S.A.

Page

CHAPTER 1. INTRODUCTION

General Organization

Use of Guide

Equipment System Wiring Cross-Connect Hardware Selection

Wiring Hardware Changes

Planning

Job Aids

Voice Terminals

Site or Satellite Closets

Cabling Facilities

CHAPTER 2. HARDWARE (66/110-Type)

1-1 1-1 1-4

1-5 1-5

1-5 1-9

1-10 1-11

1-11 1-11 1-13 1-13

2-1

General 110-Type Hardware Description

110-Type Wiring Blocks Index Strips and Connecting Blocks 110A-Type Hardware 110P-Type Hardware 188-Type Backboards

Cords Jumpers Tools

F Clip Terminal Insulator

Designation Strips

66-Type Hardware Description

66M1-50 Connecting Block

Connectorized 66-Type Connecting Blocks

Multiple-Mounted 66-Type Connecting Blocks

183-Type Backboards

187B1 Backboard

Power Adapter Cords

Jumpers

Tools

2-1 2-3

2-3 2-4

2-7 2-11 2-18 2-18 2-21 2-21 2-22 2-22

2-23 2-23 2-24 2-25 2-26 2-28 2-28 2-29 2-30

TABLE OF CONTENTS (Contd)

Page

Bridging Clips

Associated Hardware

Cable Slack Managers Network Interfaces Sneak Fuse Panels Emergency Transfer Units Trunk Concentrator Cables 16-Port Analog Line Circuit Pack Adapter Cable (For 110-Type Hardware Only) 4-Port Met Line Circuit Pack Concentrator Cable

Adjunct Power Units

CHAPTER 3. EQUIPMENT ROOM DESIGN

General Hardware Equipment Room Appplications

Trunk/Auxiliary Field

Distribution Field

2-30 2-31

2-31 2-34 2-34 2-37 2-39

2-45 2-46

2-47

3-1 3-1 3-1

3-1 3-4

Typical System Equipment Room Floor Plans

General Typical Floor Plans Wall Space Requirements

Equipment Requirements

Equipment Room Hardware And Cabling Installation

Hardware Installation Installing Cable Slack Managers

Labeling the Cross-Connect Field Installing Sneak Fuse Panels

Cable Installation

Station Wiring Design

General Station Circuit Distribution From Equipment Room

Layout

3-13 3-13 3-13 3-20 3-21

3-25 3-25 3-32 3-32 3-63 3-64

3-90 3-90 3-98

3-107

TABLE OF CONTENTS (Contd)

Page

CHAPTER 4. STATION WIRING

Installation of Station Wiring And Associated Hardware

Installing Station Cables Installing 110-Type Hardware at Satellite Locations Installing 66-Type Hardware at Satellite Locations Installing 4-Pair Station Cables Installing Information Outlets

Adjunct Powering

Adjunct Powering From the Equipment Room and Satellite

Locations Adjunct Powering From Site Locations Adjunct Powering From Information Outlets

Patch Cord/Jumper Installation And Administration

Equipment Room Cross-Connect Field

Satellite Locations

Miscellaneous Wiring Installation

Installing System Access Terminal (SAT)

Installing Attendant Console

Installing Selector Console

Installing lNADS lnterface

Installing DS1 Tie Trunks

Installing Customer-Provided Alarm—System 75 XE Only

Installing Off-Premises Station Wiring

Installing Out-of-Building Station Wiring

Installing Emergency Transfer Units and Associated

Telephones

Installing External Ringing Installing Queue Warning Indicator

4-1 4-1

4-1 4-4

4-9 4-10 4-10

4-12 4-12

4-14 4-16

4-18 4-20 4-23

4-24 4-24 4-25 4-30 4-31 4-33 4-36 4-36 4-37

4-45 4-67 4-68

CHAPTER 5. AUXILIARY EQUIPMENT INSTALLATION

Auxiliary Equipment Description Installing Loudspeaker Paging and Music-on-Hold Installing Loudspeaker Paging Access—278A Paging Adapter Installing Loudspeaker Paging Access—89A Control Unit Installing PagePac® Paging System Installing Music-on-Hold Access Installing Loudspeaker Paging With Background Music Installing Recorded Announcement Equipment

iii

5-1 5-1 5-3 5-5

5-8 5-11 5-16 5-20 5-22

TABLE OF CONTENTS (Contd)

Page

Digital Announcer Installing Audichron Wake-Up Announcement System—R1V3 Only Installing Dial Dictation Equipment Installing 3270 Data Modules Installing Processor Data Modules (PDMs) Installing AP Interface—System 75 Only Installing AUDIX Interface—R1V3 Only Installing CMS Interface—R1V3 Only Installing DCS—R1V2 and R1V3 Installing PMS Interface—R1V3 Only Installing Customer-Provided Terminal Using ADUs Installing SMDR lnterface Installing lSN lnterface Installing STARLAN NETWORK Interface Installing Premises Lightwave System (PLS) Interface Installing Processor Interface/EIA Port

CHAPTER 6. GLOSSARY

5-26 5-28

5-32 5-33 5-36 5-39 5-42 5-42 5-43 5-44 5-45 5-45 5-49 5-52 5-53 5-55

6-1

CHAPTER 7. INDEX

7-1

CHAPTER 1. INTRODUCTION

GeneraI

Organization

Use of Guide Equipment

System Wiring Cross-Connect Hardware Selection

Wiring Hardware Changes

Planning

Job Aids Voice Terminals Site or Satellite Closets Cabling Facilities

1-1 1-4

1-5 1-5

1-5 1-9

1-10

1-11 1-11 1-11 1-13 1-13

-i-

Figures

Figure 1-1. Documentation Block Diagram Figure 1-2. Figure 1-3. Figure 1-4. Block Diagram of System 75 or 75 XE Installation Figure 1-5.

Figure 1-6.

System Uniform Wiring Plan Sample Uniform Wiring Installation

Sample Floor Plan With Voice Terminal Locations Marked Riser Cable Placement

1-3 1-7 1-8

1-10 1-12

1-14

-ii-

CHAPTER 1. INTRODUCTION

General

This guide is one of the three documents (Figure 1-1) required to install

a System 75 or 75 XE switch. This guide describes the hardware, job planning, equipment ordering, and installation information from:

The telephone company network interface up to and including the

●

25-pair cables that connect directly to the switch The main equipment room cross-connect field and the associated

●

cabling from this cross-connect field to the switch cabinet and/or 8-pin modular wall jacks (information outlets).

All information in this guide is compatible with both System 75 or 75 XE, except when a statement is made that a topic is strictly for a specific

switch.

The other documents required for the installation of the System 75 or 75 XE are as follows:

AT&T System 75—Installation and Test (555-200-104):

Contains the information required to install and test a System 75 switch and attendant console. For continuity purposes, the attendant console wiring is covered in this guide.

AT&T System 75— XE Installation and Test (555-201-104):

Contains the information required to install and test a System 75 XE switch and attendant console. For continuity purposes, the attendant console wiring is covered in this guide.

DEFINITY™ Communications System and System 75, and

System 85—Terminals and Adjuncts, Installation and Tests

(555-015-104)

Contains the information required to install and test

telephones/voice terminals and their associated adjuncts.

1-1

CHAPTER 1. INTRODUCTION

This issue replaces all previous issues of this document. The reason for

reissue is:

●

Remove information pertaining to Z100-type hardware.

●

Combine information for 66- and 110-type hardware.

●

Add processor/EIA interface connections.

●

Add digital out-of-building voice terminal connections.

●

Add connections for System Access Terminal (SAT).

1-2

MANUAL

555-015-104

General

CENTRAL OFFICE

TRUNKS

NETWORK

INTERFACE

SNEAK FUSE

PANEL

AUXILIARY EQUIPMENT

TRUNK/

AUXILIARY

FIELD

TERMINALS

AND

ADJUNCTS

WIRING GUIDE

(555-200-111)

INFORMATION OUTLET

STATION WIRING

MAIN

CROSS-CONNECT

FIELD

MANUAL

SWITCH

CABINET

AND

CONSOLE

(555-200-104

555-201-104)

Figure 1-1. Documentation Block Diagram

1-3

CHAPTER 1. INTRODUCTION

Organization

This guide is organized into seven chapters:

●

CHAPTER 1—INTRODUCTION

Presents an overview of the system Uniform Wiring Plan, general guidelines on hardware selection, and organization of the guide.

●

CHAPTER 2—HARDWARE (66- and 110-Type)

Describes the 66- and 110-type connecting blocks and associated hardware, job planning, equipment ordering codes, and how to install the hardware.

●

CHAPTER 3—EQUIPMENT ROOM DESIGN

Describes hardware application in the equipment room, labeling procedures, and grounding techniques.

●

CHAPTER 4—STATION WIRING

Describes station and miscellaneous wiring, adjunct powering, and administration and installation of patch cords and jumper wires.

●

CHAPTER 5—AUXILIARY EQUIPMENT

Provides connection information for the various types of auxiliary equipment that can be used with the switch.

●

CHAPTER 6—GLOSSARY

Contains a brief description of some of the terms used in this guide.

1-4

●

CHAPTER 7—INDEX

Contains a permuted index.

Organization

Use of Guide

This guide provides information for planning, designing, and installing a cost-effective wiring installation that allows moves, changes, and additions to be made quickly and easily. To make the best use of this guide, take the time to read it thoroughly and become familiar with its contents and organization. For quick access to information needed to answer most questions, refer to the table of contents and locate the specific item in question.

To answer questions requiring more information than this guide contains, consult the documents listed previously in this introduction section. If you need additional help, contact the Premises Services Consultant (PSC).

For further technical assistance, the recommended channel for AT&T

System Technicians is as follows:

Contact your Field Assistance and Support Team (FAST).

If a satisfactory answer is not obtained from the FAST center,

2. contact your supervisor.

Your supervisor should contact the regional staff, if necessary.

Equipment

Most of the items specified in this guide are available through the local

AT&T Marketing Branch Office (MBO). However, some common use

hardware items may have to be obtained from other sources.

System Wiring

System wiring plays a significant role in customers’ information systems. Technological innovations enable both voice and data transmission to be provided through the system wiring. Also, the system wiring has been simplified by reducing the number of cable pairs required by voice terminals equipped with enhanced feature options.

This guide provides planning, ordering, and installation guidelines for a

system Uniform Wiring Plan (Figures 1-2 and 1-3) using 110-type or

66-type hardware.

1-5

CHAPTER 1. INTRODUCTION

The system switch ports for data and voice terminals require three pairs of wire per circuit. Voice terminal adjuncts require an additional pair for remote powering. To provide maximum flexibility for voice terminal changes, rearrangements, and powering, all data and voice terminal information outlets are wired with 4-pair cable. With proper administration, this will allow any voice terminal to be located at any information outlet.

1-6

System Wiring

Figure 1-2. System Uniform Wiring Plan

1-7

CHAPTER 1. INTRODUCTION

1-8

Figure 1-3. Sample Uniform Wiring Installation

Cross-Connect Hardware Selection

For new wiring installations, the following cross-connect hardware is available for use in the system. Each item lists certain considerations

that should help to select the appropriate hardware.

1. 110P Hardware

●

Patch cord design allows customer to administer cross-connections

●

Requires some technical skill to administer cross-connections

2. 110A Hardware

●

Design does not permit customer participation in cross-connect administration—requires technically skilled personnel to administer cross-connections

●

Hardware is less expensive than the patch cord systems, but installation and administrative costs are greater

3. 66-type Hardware

●

Design does not permit customer participation in cross-connect administration—requires technically skilled personnel to administer cross-connections

●

Hardware is less expensive than the patch cord systems, but installation and administrative costs are greater

Obviously, the customer’s interest and preference for administering cross-connections (because of likely lower total annual costs, as well as the capability to administer the cross-connections at the most convenient time) should be given primary consideration in recommending cross-connect hardware.

Figure 1-4 shows a block diagram of the equipment required to install a System 75 or 75 XE switch. The sites shown in Figure 1-4 are physical locations (closets) for pass-through connections where adjunct power may be applied. The satellite is a physical location (closet) where cross-connect administration can take place and adjunct power may be applied.

1-9

CHAPTER 1. INTRODUCTION

Figure 1-4. Block Diagram of System 75 or 75 XE Installation

Wiring Hardware Changes

All jobs engineered by PSCs based on customer requirements and

preferences should not be redesigned by the Field Services Organization (FSO) without approval by the PSC/MBO. If changes are required, a change order must be issued to ensure correct billing.

1-10

Planning

The following information will help you design a uniform wiring plan with

growth potential. The plan is simple, flexible, easy to administer, and reasonable in cost.

Job Aids

Blueprints (floor plans) are important when planning, designing, and

installing station wiring. The floor plans (Figure 1-5) provide a complete view of all conduit and other cabling facilities in the building. These facilities should be considered when planning site or satellite locations

and cabling.

Voice Terminals

The number of information outlets to be installed per voice terminal location is determined by customer requirements. It may be advantageous to install any additional information outlets required for future growth or voice terminal rearrangements during the initial installation.

To begin designing the station wiring, show the following information on the floor plan(s):

●

Location of each information outlet and associated voice terminal

type if known (analog, hybrid, or digital)

●

Any associated voice terminal adjuncts or modules and the

required powering arrangements.

1-11

CHAPTER 1. INTRODUCTION

SITE OR SATELLITE

LOCATION

CABLE DUCT*

* AN OPTION TO THE CABLE DUCT SHOWN IS TO RUN CABLES

(PLENUM-APPROVED, IF APPROPRIATE OR REQUIRED)

ABOVE A DROP/FALSE CEILING.

- INFORMATION OUTLET LOCATION SPEAKERPHONE

ANALOG VOICE TERMINAL

A -

HYBRID VOICE TERMINAL

H -

DIGITAL VOICE TERMINAL

D S -

SURFACE MOUNTED INFORMATION OUTLET

F -

FLUSH MOUNTED INFORMATION OUTLET

1 2 -

AMPLIFIED HEADSET

3 -

CALL COVERAGE MODULE

4 -

FUNCTION KEY MODULE

5 -

DISPLAY MODULE

Figure 1-5. Sample Floor Plan With Voice Terminal Locations

Marked

1-12

Planning

Site or Satellite Closets

When determining the location of site or satellite closets, use the following information as a guide. Show the locations on the floor plan.

Keep the number of locations to a minimum.

Centrally locate the site or satellite closets among the information

outlets to minimize station wiring distances. Site or satellite closets must be easily accessible and contain

enough ac power receptacles to serve the equipment that will be located there. Voice terminals equipped with adjuncts that require power can be remotely powered from:

●

a site or satellite location

●

from the main equipment room

●

information outlets.

The distance between the power supply and the voice terminal

cannot exceed 250 feet of 24-gauge wire.

Locks should be provided for the site or satellite closet doors to

prevent tampering with the equipment.

Cabling Facilities

The method of riser cable distribution between the main equipment

room and site or satellite closets is usually determined by the type of

cabling facilities (riser closets, conduit size, cabling shafts, etc.) in the

building (Figure 1-6).

The preferred arrangement is to have individual cables supply each

site or satellite closet.

A second method is to have one or two large cables supply all the

site or satellite closets. This requires that smaller cables be installed between the main riser cable and the site or satellite closet. These smaller cables are then spliced into the main cable.

Determine the type of cabling required and mark the type and routing on

the floor plan. Also, show any additional cabling facilities required for

riser and terminal cabling.

1-13

CHAPTER 1. INTRODUCTION

PREFERRED

INDIVIDUAL 100-PAIR

RISER CABLES

ACCEPTABLE

MAIN RISER CABLE WITH

SMALLER CABLES SPLICED TO IT

CAUTION:

1-14

TWO POSSIBLE WAYS TO PLACE RISER CABLE

THE UNIFORM WIRING PLAN SHOULD NOT CONTAIN ANY BRIDGE TAPS (AN UNUSED CABLE PAIR CONNECTED TO A WORKING CABLE OR THE CONTINUATION OF A WORKING PAIR PAST THE POINT

AT WHICH A TERMINAL HAS BEEN CONNECTED).

Figure 1-6. Riser Cable Placement

CHAPTER 2. HARDWARE

(66/110-Type)

General

110-Type Hardware Description

110-Type Wiring Blocks

Index Strips and Connecting Blocks

110A-Type Hardware 110P-Type Hardware 188-Type Backboards Cords

110-Type Patch Cords F-61789 Power Adapter Cords

Test Cords Jumpers Tools F Clip Terminal Insulator Designation Strips

66-Type Hardware Description

66M1-50 Connecting Block Connectorized 66-Type Connecting Blocks Multiple-Mounted 66-Type Connecting Blocks

183-Type Backboards 187B1 Backboard

Power Adapter Cords Jumpers Tools

Bridging Clips

2-1 2-3

2-3 2-4

2-7 2-11 2-18 2-18 2-18 2-20 2-21 2-21 2-21 2-22 2-22

2-23 2-23 2-24 2-25 2-26 2-28 2-28 2-29 2-30 2-30

Associated Hardware

Cable Slack Managers

General

Z113A Housing

Z114A Housing

Network Interfaces

RJ21X Network Interface RJ2GX Network Interface

1.544 Mbps Digital Service Interface

Sneak Fuse Panels

2-31 2-31 2-31 2-33 2-33 2-34 2-34 2-34 2-34 2-34

-i-

575-4 Sneak Current Fuse Panel

Emergency Transfer Units

General Z1A Emergency Transfer Unit

574-5 Power Transfer Unit

Trunk Concentrator Cables

WP-90929, List 1, Cable Assembly (For 110-type Hardware Only)

WP-90929, List 2, Cable Assembly (For 66-type Hardware Only) WP-90929, List 3, Cable Assembly (For 110-type Hardware Only) WP-90929, List 4, Cable Assembly (For 66-type Hardware

Only)

16-Port Analog Line Circuit Pack Adapter Cable (For 110-Type

Hardware Only)

4-Port Met Line Circuit Pack Concentrator Cable

2-34 2-37 2-37 2-37 2-37 2-39

2-39 2-42 2-43 2-45 2-45

2-46

Adjunct Power Units

General

Individual Power Supplies Bulk Power Supply

2-47 2-47 2-47 2-49

-ii-

Figures

Figure 2-1. Figure 2-2. Figure 2-3. Figure 2-4. Figure 2-5. Figure 2-6.

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.

Block Diagram of System 75 or 75 XE Installation 110-Type Wiring Block 110-Type Index Strip With Connecting Blocks 110A-Type 100-Pair Terminal Block 110A-Type 300-Pair Terminal Block 110P-Type Terminal Block—300-Pair Connectorized 110P-Type Terminal Block—900-Pair Connectorized (Top) 110P-Type Terminal Block—900-Pair Connectorized (Bottom) 3-Pair Patch Cord Used With 110-Type Hardware F-61789 Power Adapter Cord Designation Strip 66M1-50 Connecting Block 157B Connecting Block 183A-Type Backboard 187B1 Backboard Power Adapter Cord Cable Slack Managers Model 575-4 Sneak Fuse Panel

Model 574-5 Power Transfer Unit Trunk Concentrator Cables (WP-90929, L1 & L3) (For 110-type Hardware Only) Trunk Concentrator Cables (WP-90929, L2 & L4) (For 66-type Hardware Only)

16-Port Analog Line Circuit Pack Adapter Cable (853B Adapter)

Individual Power Supplies AC Power Strip 346 Modular Bulk Power Supply 346A1 Power Panel Circuit Breaker Locations

2-2 2-3 2-4 2-8

2-9 2-12 2-13 2-14

2-19 2-20 2-23 2-24 2-25 2-27 2-28 2-29 2-32 2-36 2-38

2-40 2-43 2-46

2-47 2-49 2-50 2-51

-iii-

Tables

Table 2-A. 25-Pair Cable Termination on a 110-Type Wiring

Block/66-Type Connecting Block

Table 2-B. Table 2-C. WP-90929, List 3 and List 4, Cable Assembly Table 2-D. Table 2-E.

WP-90929, List 1 and List 2, Cable Assembly Wiring

Wiring

Individual Power Supply Adjunct and Distance Limitations

346A Power Unit Adjunct and Distance Limitations

2-5 2-41 2-44 2-48

2-52

-iv-

CHAPTER 2. HARDWARE (66/110-Type)

General

Figure 2-1 shows the equipment required to install a System 75 or 75 XE switch. This chapter describes the hardware (66- and 110-Type) used in the installation process. Ordering information is provided for the required hardware.

The sites shown in Figure 2-1 are physical locations (closets) for pass-through connections where adjunct power can be applied. The satellite location is a place (closet) where cross-connect administration can be carried out, and adjunct power can be applied.

2-1

CHAPTER 2. HARDWARE (66/110-Type)

Figure 2-1. Block Diagram of System 75 or 75 XE Installation

2-2

110-Type Hardware Description

The 110-type hardware consists of connectorized or field-terminated terminal blocks in 100-, 300-, and 900-pair sizes. The 110-type terminal blocks consist of the following parts:

●

110-type wiring blocks

Index strips

●

3-, 4-, and 5-pair connecting blocks.

110-Type Wiring Blocks

The 110-type wiring block (Figure 2-2) is a plastic wiring block equipped

with permanently attached index strips.

WIRING BLOCK

TERM NO. 1

DESIGNATION

INDEX STRIP

Figure 2-2. 110-Type Wiring Block

INSERT

TERM NO. 50

2-3

+ 315 hidden pages

AT&T System 75, System 75 XE Wiring Diagram

Specifications and Main Features

Frequently Asked Questions

User Manual

TABLE OF CONTENTS

General

Organization

Use of Guide

Equipment

System Wiring

Cross-Connect Hardware Selection

Wiring Hardware Changes

Planning

Job Aids

Voice Terminals

Site or Satellite Closets

Cabling Facilities

General

110-Type Hardware Description

110-type wiring blocks