AT&T Release 3.0 User Manual

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AT&T 555-630-140 August 1994

MERLIN LEGEND Communications System Release 3.0

Installation

AT&T 555-630-140

August 1994

Printed in U.S.A. Notice

Every effort was made to ensure that the information in this book was complete and accurate at the time of printing. However, information is subject to change.

See Appendix A, “Customer Support Information,” for important information. It follows Maintenance and Trobleshooting in this binder.

Security of Your System Preventing Toll 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. For important information regarding your system and toll fraud, see Appendix A, “Customer Support Information.” It follows Maintenance and Trobleshooting in this binder.

Federal Communications Commission Statement

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. For further FCC information, see Appendix A, “Customer Support Information.” It follows Maintenance and Troubleshooting in this binder.

Canadian Department of Communications (DOC) Interference Information

This digital apparatus does not exceed the Class A limits for radio noise emissions set out in the radio interference

regulations of the Canadian Department of Communications. Le Présent Appareil Numérique n’émet pas de bruits radioélectriques dépassant Ies Iimites applicable aux appareils

numériques de la class A préscrites dans Ie reglement sur Ie brouillage radioélectrique édicté par Ie ministére des

Communications

Canada.

Trademarks

5ESS, Accunet, ACCULINK, Megacom, MERLIN, MERLIN LEGEND, ACCULINK, Magic On Hold, MultiQuest, and Systimax are registered trademarks and 4ESS, AUDIX Voice Power, FAX Attendant System, HackerTracker, MERLIN MAIL, MERLIN PFC, MLX-10, MLX-10D, MLX-10DP, MLX-20L, MLX-28D, PassageWay, and PictureTel are trademarks of AT&T in the U.S. and other countries. Supra, StarSet, and Mirage are registered trademarks of Plantronics, Inc. UNIX is a registered trademark of UNIX System Laboratories, Inc. PagePac is a registered trademark of DRACON, a division of Harris Corporation.

Okidata is a registered trademark of Okidata Corporation.

Microsoft is a registered trademark and Windows a trademark of Microsoft Corporation.

Ordering Information

The ordering number for this document is 555-630-140. To order this document, call the AT&T Customer Information Center at 1-800-432-6600 (in Canada, 1-800-255-1242). For more information about AT&T documents, refer to the section entitled, “Related Documents” in “About This Book.” The Pocket Reference, listed in that section, provides full ordering information for replacement parts, accessories, and other compatible equipment; or, contact your AT&T representative.

Support Telephone Number

In the continental U. S., AT&T provides a toll-free customer helpline 24 hours a day. Call the AT&T Helpline at 1-800-628-2888 if you need assistance when installing or using your system.

Outside the continental U. S., contact your local AT&T representative.

Warranty

AT&T provides a limited warranty on this product. Refer to “Limited Warranty and Limitation of Liability” in Appendix A,

“Customer Support Information,” which follows Maintenance and Troubleshooting in this binder.

Contents

About This Book

Intended Audience

How to Use This Book

Terms and Conventions

Used

Product Safety Labels

Security

About This Book

The MERLIN LEGEND Communications System is an advanced digital switching system that integrates voice and data communications features. Voice features include traditional telephone features, such as Transfer and

Hold, and advanced features, such as Group Coverage and Park. Data

features allow both voice and data to be transmitted over the same system

wiring.

Intended Audience

This book is intended for qualified field technicians who install and upgrade the system.

How to Use This Book

Qualified technicians can use this book as a guide to installation and upgrading procedures. The technician is given specific steps for installing all units of the control unit, telephones, adjuncts and data equipment.

Installation xix

How to Use This Book

Refer to the following documentation for additional information:

Equipment and Operations Reference provides detailed information

on system hardware, telephones, and other equipment.

Feature Reference provides details on the features of the

communications system.

System Planning provides procedures and forms for planning a system for installation.

System Programming gives procedural instructions for programming

system features.

Users’ guides and Operators’ Guides give procedural instructions for programming and using telephone features.

“Related Documents,” later in this section, provides a complete list of system

documentation together with ordering information.

In the U.S.A. only,

2888) 24 hours a day. Call the Helpline, or your AT&T representative, if you need assistance when installing, programming, or using your system.

AT&T

provides a toll-free customer Helpline (1 -800-628-

Installation

Terms and Conventions Used

In this document, the terms in the following list are used in preference to

other, equally acceptable terms for describing communications systems.

Lines, Trunks and Facilities

Facility is a general term that designates a communications path between a

telephone system and the telephone company central office. Technically a

trunk connects a switch to a switch, for example the Communications System to the central office. Technically, a line is a loopstart facility or a communications path that does not connect two switches (for example, an intercom line or a Centrex line). However, in actual usage,

the terms line and trunk are often applied interchangeably. In this book, we

use line/trunk and lines/trunks to refer to facilities in general. Specifically, we refer to digital facilities. We also use terms such as personal line, ground-

start trunk, Direct Inward Dialing (DID) trunk, and so on. When you talk to your local telephone company central office, ask them what terms they use for the specific facilities they connect to your system.

MERLIN LEGEND

Some older terms have been replaced with newer terms. The following list

shows the old term on the left and the new term on the right: trunk module

trunk jack station station jack analog data station digital data station analog voice and analog data station

digital voice and analog data station

analog data only station

digital data only station

digital voice and digital data station

line/trunk module line/trunk jack extension extension jack modem data station 7500B data station analog voice and modem data

station

MLX voice and modem data

station modem data-only station 7500B data-only station MLX voice and 7500B data

station

Installation xxi

Product Safety Labels

Typographical Conventions

Certain type fonts and styles act as visual cues to help you rapidly understand the information presented:

Example

It is very important that you follow these steps. You must attach the wristband before touching the connection.

The part of the headset that fits over

one or both ears is called a

headpiece.

If you press the MLX display telephone, the display lists telephone features you can select. A programmed Auto Dial

button gives you instant access to an

inside or outside number.

Choose

screen.

To activate Call Waiting, dial

Ext Prog

Feature

button on an

from the display

*11.

Purpose

Italics indicate emphasis.

Italics also set off special terms.

The names of fixed-feature, factoryimprinted buttons appear in bold. The names of programmed buttons are

printed as regular text.

Plain constant-width type indicates text

that appears on the telephone display

or personal computer (PC) screen. Constant-width type in italics indicates

characters you dial at the telephone or type at the PC.

Product Safety Labels

Throughout these documents, hazardous situations are indicated by an exclamation point inside a triangle and the word caution or warning.

WARNING:

Warning indicates the presence of a hazard that could cause death or

severe personal injury if the hazard is not avoided.

xxii

Installation

Security

CAUTION:

Caution indicates the presence of a hazard that could cause minor

personal injury or property damage if the hazard is not avoided.

Security

Certain features of the system can be protected by passwords to prevent unauthorized users from abusing the system. You should assign passwords

wherever you can and limit knowledge of such passwords to three or fewer

people. Nondisplaying authorization codes and telephone numbers provide another

layer of security, For more information, see Appendix A, “Customer Support Information” following Maintenance and Troubleshooting.

Installation xxiii

How to Comment on This Document

We welcome your comments, both good and bad. Please use the feedback form on the next page to let us know how we can continue to serve you. If the feedback form is missing, write directly to:

Documentation Manager AT&T

211 Mount Airy Road

Room 2W226

Basking Ridge, NJ 07920

Installation xxv

How to Comment on This Document

xxvi

Installation

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Introduction

Installation of the MERLIN LEGEND Communications System involves the

following:

■ Installing the control unit

■ Installing the telephones

■ Connecting system wiring

■ Installing optional equipment

This chapter provides an overview of the installation process, which varies from customer to customer.

Installation Sequence

The following is a list of the components that the system can include and shows the order in which you should install them. When installing your customer’s system, try to adhere to this order as much as possible:

1. Install the control unit (required).

2. Connect power accessories to the control unit (optional).

3. Install the telephones (required) and adjuncts (optional).

4. Connect the telephones to the control unit (required).

Introduction 1-1

System Forms

Connect the control unit to the network interface (required).

5. Connect the channel service unit (CSU) to the 100D module on the

6. control unit (required only with the 100D module).

Connect the printer and PC to the control unit (optional). Connect data equipment to the control unit (optional).

Initialize and test the system (required).

9. Install the control unit housing (required).

10. Install applications (optional).

11.

A list of required tools and equipment is given before each installation

procedure.

System Forms

Some of the installation procedures in this guide refer to system forms. These

forms indicate information that is specific to your customer’s system. The

forms you need should be included with the system programming disk or

memory card, which contains all of the programming specifically for your

customer’s system.

If you are upgrading an existing system and do not have the required forms

for your customer’s system, you can load System Programming and

Maintenance (SPM) and print out the required forms.

If you find that you do not have a completed set of system forms for your customer’s system, contact your technical support organization or the Customer Service Center (CSC). See the inside front cover for telephone

numbers. The system forms that you need are specific for each system, and include

some or all of those described in the following sections.

1–2 Introduction

System Forms

Installling the Control Unit

■

Form 1, System Planning.

the Control Unit,” refer to the Control Unit Diagram, which is printed on the reverse side of this form.

Some procedures in Chapter 2, “Installing

Form 3c, Incoming Trunks: Tie.

If you install a 400EM module in the control unit, use this form to determine the appropriate switch settings prior to installation.

Installing Telephones (Required) and Adjuncts (Optional)

The following forms indicate the telephones and adjuncts that you must install:

■

Form 2a, System Numbering: Extension Jacks

■ Form 2b, System Numbering: Digital Adjuncts

■ Form 4b, Analog Multiline Telephone

■ Form 4d, MLX Telephone

■

Form 4e, MFM Adjunct: MLX Telephone

■ Form 4f, Tip/Ring Equipment

■

Form 5a, Direct-Line Console (DLC): Analog

■

Form 5b, Direct-Line Console (DLC): Digital

■ Form 5c, MFM Adjunct: DLC

■ Form 5d, Queued Call Console (QCC)

Connecting the Network Interface

The following forms indicate the trunks that you must connect to the control

unit. Information regarding the channel service unit

these forms.

■

Form 2c, System Numbering: Line/Trunk Jacks

(CSU)

is included on

Introduction 1-3

Programming the System

■

Form 3a, Incoming Trunks: Remote Access

■

Form 3b, Incoming Trunks: DS1 Connectivity (100D Module)

■ Form 3d, Incoming Trunks: DID

Connecting Data Equipment

The following forms indicate the data equipment you will need to set up data

stations.

■

Data Form 1a, Modem Data Station

■

Data Form 1b, 75006 Data Station

■ Data Form 2, Data Hunt Groups

Programming the System

If you have a system programming disk created with SPM or a Translation memory card, you do not need to program the system. Instead, you can use the disk or memory card to restore the system; see Chapter 7, “Initializing and Testing the System,” for instructions. If you did not receive a disk or a memory card and it is your responsibility to program the system, see System Programming for instructions.

Upgrading the System

If you are upgrading to Release 3.0 from Release 2.1, 2.0, 1.0, 1.1, or from the MERLIN System,” then Chapter 7, “Initializing and Testing the System,” for upgrade instructions.

NOTE:

You cannot retain the programming from the MERLIN II Communications System. You must first upgrade the hardware, then reprogram the system.

II Communications System, refer to Chapter 9, “Upgrading the

1-4 Introduction

Installing the Control Unit

If you have not read Chapter 1,

this chapter.

“Introduction,” do so before continuing with

Overview

Installing the control unit involves the following procedures:

Preparation requirements Installing the backboard Meeting the power and grounding requirements Checking the total unit load Installing the basic carrier Installing any expansion carriers Installing the power supply Installing the processor Installing the line/trunk and extension modules Connecting the control unit to AC power Powering up the system Powering down the system

Installing the Control Unit 2-1

Overview

The following sections provide detailed instructions for these

installation

procedures. Follow the procedures in the order in which they are presented.

Environment

The control unit must be installed on a backboard. The placement of the

backboard, and the control unit on it, requires careful consideration. Make

sure you install the backboard in an area that meets all of the environmental

requirements listed in Table 2–1.

Table 2-1. Environmental Requirements

Operating

Temperatures Humidity 20%–80%

Airborne Contamination

Ventilation

400-104°F (4°-400C) Optimal temperature: 60°F(15.6°C)

Do not expose the control unit to moisture, corrosive gases, dust, chemicals, spray paint, or similar material.

Allow at least 1 in. (2.54 cm) on the right and left sides of the control

unit and 12 in. (30.48 cm) minimum, above and below it, to prevent overheating,

Do not place the control unit near extreme heat sources (for example:

furnaces, heaters, attics, or direct sunlight).

Electrical Fields

Heat Dissipation

Do not expose the control unit to devices that generate electrical

currents causing interference (such as arc welders or motors).

Basic carrier: 500 Btu/hr Basic carrier: with Basic carrier: with

WARNING:

Do not install the control unit outdoors.

2-2 Installing the Control Unit

one expansion carrier 1000 Btu/hr two expansion carriers 1500 Btu/hr

Overview

Electrical Noise/Radio-Frequency Interference

In most cases, electrical noise is introduced to the system through trunk or

telephone cables. However, electromagnetic fields near the control unit can

also cause noise in the system. Therefore, you should not place the control unit and cable runs in areas where a high electromagnetic field strength

exists.

Radio transmitters (AM and FM), television stations, induction heaters, motors (with commutators) of 0.25 horsepower (200 watts) or greater, and similar equipment are leading causes of radio-frequency interference (RFI). Small tools with universal motors are generally not a problem when they operate on separate power lines. Motors without commutators generally do not cause interference.

Field strengths below 1.0 volt per meter are unlikely to cause interference. To estimate the field strength produced by radio transmitters, divide the square root ( ✔ ) of the emitted power, in kilowatts, ( : ) by the distance from the antenna

in kilometers which equals (=) the field strength in volts per meter.

Example: {49,000 kw = 7,000 : 10 km (6.2 miles) = 0.7 volts per meter

This yields the approximate field strength in volts per meter and is relatively

accurate for distances greater than about half a wavelength (492 ft., or 150 m,

for a frequency of 1000 Hz). If the result exceeds 1.0 volt per meter, you may

have to install shielded cables and or Z200A filters. See Appendix A, “Customer Support Information,” following Maintenance and Troubleshooting,

for FCC Part 15 radio frequency regulations.

Control Unit Requirements

■ Dimensions

— Basic carrier: 14 in. wide by 23 in. high by 12 in. deep — Basic carrier and one expansion carrier: 25 in. wide by 23 in. high

by 12 in. deep

Installing the Control Unit 2-3

Overview

■ Location

— Basic carrier and two expansion carriers: 37 in. wide by 23 in. high

by 12 in. deep

— Within 5 ft. (152 cm) of an AC power outlet that is not switch-

controlled

— Within 25 ft. (762 cm) of the network interface, or use an Off-

Premises Range Extender (OPRE)

— Within 1000 cable ft. (305 m) of telephones, or use an OPRE (for

basic telephones)

CAUTION:

The AC outlet for the control unit cannot be switch-controlled, Plugging the control unit into such an outlet invites accidental disconnection of the system.

Hardware Preassemble Process

If an installation is to be preassembled, wired, programmed, and tested on

the new lightweight plastic backboard, see “Installing the Backboard.”

Backboard Requirements

The backboard should be wide enough to accommodate the carrier and up to two additional carriers, assuming that system growth is anticipated. There

should be enough room on each side of the control unit for the necessary

wiring fields, To accommodate the maximum control unit size, make sure the backboard

meets the following requirements:

■ Material

— ¾-inch plywood — Check with the local building code enforcement agency to see

whether fire-retardant material is required.

2-4 Installing the Control Unit

AC Power and Grounding

— Make sure that the material meets local building codes.

■ Dimensions

— With Systimax

wiring: 7 ft. wide by 4 ft. high

— Without Systimax wiring: 6 ft. wide by 3 ft. high

Installing the Backboard

When you are certain that the backboard meets the requirements indicated above, or is the new lightweight plastic material backboard with

preassembled equipment in place, attach the backboard to the wall. Use the following mounting hardware:

■ For a wood mounting surface, use wood screws.

■ For brick, cinderblock, or concrete, use masonry anchors.

■ For plaster or plasterboard, use toggle bolts.

■

For sheet metal, use sheet-metal screws and attach them to the

structural members.

NOTE:

The mounting hardware should resist a combined pullout force of at least 650 pounds (295 kilograms).

AC Power and Grounding

Proper power and grounding are essential for the system to run correctly and

safely.

CAUTION:

If any of the following requirements are not met, contact a licensed electrician. Do not install the

requirements are met.

the customer must

system until all

Installing the Control Unit 2-5

AC Power and Grounding

Verify that all of the following power and grounding requirements are met:

The load center of appropriate current rating must be equipped with

circuit breaker(s) labeled 120 VAC, 15 amps.

■

Each breaker must protect one dedicated quad AC outlet or two dedicated duplex AC outlets.

■

All AC outlets must connect to the same load center and the ground wire must connect to the single-point ground bar on the first AC outlet

(see Figure 2-1). One outlet must have an attached ground bar connected by a #6 AWG

copper wire to an approved ground (see page 2-12 for a description of approved grounds). This ground bar is the system’s single-point ground (see Figure 2-1 ).

To prevent someone from accidentally shutting off the power, do not

connect the control unit to a switch-controlled outlet.

The AC outlet should be within 5 ft. (152 cm) of the control unit.

Each carrier requires one AC outlet receptacle. Auxiliary equipment requires additional AC outlets.

If a printer or PC is installed on the system, it must be plugged into the

same AC branch as the power supply of the basic carrier.

If the printer or PC is 50 ft. (15 m) or more from the control unit, or is plugged into a different AC circuit, Asynchronous Data Units (ADUs) must be installed as well. Chapter 5, “Installing the PC, CAT, or

Printer,” includes complete installation instructions. The AC power requirements indicated in “AC Outlet Tests,” below,

must be met.

2-6 Installing the Control Unit

AC Power and Grounding

From AC

Load Center

(2 separately

fused 15A

circuits)

Ground Wire

#14 AWG

HUBBELL

Receptacles

(5262 15A

or equivalent)

Single-Point

Ground

Ground Bar Mounted on a 4“ Box (Square

“D” PK9GTA or approved equivalent)

Approved Building Ground

#12 or #14 AWG Copper

Wire to Each Power Supply

Grounding Screw

4" Box (RACO or equivalent)

4“ Cover (RACO 807 or equivalent)

Ground Wire #6 AWG Copper

230

Figure 2-1. AC Grounding

CAUTION:

The AC outlet for the control unit cannot be switch-controlled, Hugging the control unit into such an outlet invites accidental disconnection of the system. The AC outlet must be properly wired as described in “AC Outlet Tests. ”

Requirements

Installing the Control Unit 2-7

AC Power and Grounding

Table 2-2. AC Power Requirements

Parameter

Nominal voltage

Value

117VAC

Voltage range 110-125 V AC

Frequency

60 Hz +/– 5% Maximum current 3 amps per power supply Power consumption

225 watts per power supply

AC Outlet Tests

If the AC outlet tests indicate that any of the power requirements in Table 2-2 are not met, your customer must contact a licensed electrician. Do not install the system until all requirements are met.

If the AC outlet tests reveal any of the following conditions, they must be

corrected before you install the system:

■ Open ground

■ Hot and neutral reversed

■ Open hot

■ Open neutral

■ Hot and ground reversed

WARNING:

Hazardous voltages are present during the following tests. Follow

instructions carefully when working with AC power line voltages.

Using an Ideal 61-035 Circuit Tester (or Equivalent)

1 Plug the circuit tester into the outlet that you want to test.

2-8 Installing the Control Unit

all

AC Power and Grounding

If the circuit is properly grounded, the ye

low and white

lights on the tester

turn on.

2 Unplug the circuit tester.

Using

Set the VOM to the lowest scale on which you can read 130 V AC.

a Volt-Ohm Milliammeter (VOM)

2 Measure the AC outlet voltages. See Figure 2-2.

■

Phase to ground should be 110 to 125 V AC.

■ Neutral to ground should be less than 1 V AC.

■

Phase to neutral should be 110 to 125 V AC.

110-125

/ Volts AC\

Neutral

Phase (HOT)

Ground

Less than

1.0 Volt AC

Figure 2-2. Measuring the AC Outlet Voltages

WARNING:

If the voltage outlet is improperly customer to have a

readings do not measure the values required, the AC

wired-

do not install the system.

licensed electrician correct the problem.

110-125 Volts AC

Advise the

Installing the Control Unit 2-9

AC Power and Grounding

Grounding Requirements

Proper grounding of the installation site safeguards the system by protecting it

from the following:

■

Lightning

■ Power surges

■ Power crosses on central office trunks

■ Electrostatic discharge (ESD)

When installing the control unit, make sure you meet the following grounding

requirements:

The control unit, the central office trunk protector, and the AC power

service panel should be as close to each other as possible. Because equipment can be located throughout a building, the

National Electrical Code requires that the ground point for the central office trunk protector be bonded to the AC power ground as shown in Figure 2-3.

The AC outlet and the single-point ground bar must be properly

grounded as shown in Figure 2-1 and Figure 2-3. Each power supply in the control unit must be connected to the single-

point ground bar by a #12 AWG or a #14 AWG solid copper wire. Figures 2–1 and 2–3 show this connection.

This wire run should be as short as possible, preferably within 5 ft.

(152 cm), not to exceed 10 ft. (305 cm), See “Approved Grounds,”

later in this chapter, for more information.

The AC outlet must be connected to the 147A protector with#12 AWG

or a #14 AWG solid copper wire.

2-10 Installing the Control Unit

AC Power and Grounding

To Central

Office or

Serving

Facility

Lines

Line

Protector

Network

Interface

Coupled Bonding

Conductor (optional)

(Power)

(Supply

)

DIW or

25-Pair Cable

Wiring

Field

D2R Cords

Commercial

Power

#12 or #14

AWG

Ground

Wire

#6 AWG

Ground

Wire

Earth

Ground Bond

Wire

Plug

Outlet

Power

Ground

Rod

Figure 2-3. Central Office and AC Grounds

Single Point Ground Bar

Shield Ground

GND (Green)

Power

Service

Installing the Control Unit 2-11

AC Power and Grounding

WARNING:

Improper ground can cause equipment failures, service outages, and electrical shock. Verify that the AC power uses an approved ground for its primary ground, that all voltage-limiting devices are grounded to an approved ground, and that the ground is one of the approved grounds listed below.

Approved Grounds

Approved grounds are listed below, in order of preference:

■

Building Steel.

■

Acceptable Water Pipe.

underground water pipe at least ½ in. (1.27 cm) in diameter, and in direct contact with the earth for at least 10 ft. (3 m).

The most preferred ground.

Must be a metal, not plastic or vinyl,

It must be electrically continuous so that the protector ground is uninterrupted. (Check for insulated joints, plastic pipe, and plastic

water meters that might interrupt electrical continuity. ) A metallic underground water pipe must be supplemented by the

metal frame of the building, a concrete-encased ground, or a ground ring. If these grounds are not available, the water pipe ground can be

supplemented by one of the following types of grounds:

— Other local metal underground systems or structures, such as

tanks and piping systems, but not gas pipes

— Rod and pipe electrodes, a 5/8-in. (1.58-cm) solid rod or ¼-in.

(0.63-cm) conduit or pipe electrode driven to a minimum depth of 8 ft. (244 cm)

— Plate electrode, a minimum of 2 square ft. (61 square cm) of

metallic surface exposed to the exterior soil

2-12 Installing the Control Unit

AC Power and Grounding

■

Concrete-Encased Ground.

of the following:

At least 20 ft. (6.1 m) of one or more steel reinforcing rods, each at

least ½ in. (1.27 cm) in diameter

Must be an electrode, consisting of one

20 ft. (6.1 m) of bare copper conductor not smaller than

encased in 2 in, (5 cm) of concrete This electrode must be located within and near the bottom of a

concrete foundation or footing that is in direct contact with the earth.

Ground ring, consisting of at least 20 ft. (6.1 m) of bare copper conductor (not smaller than #2 AWG) encircling the building. The

ground ring must be in direct contact with the earth and buried at least 2.5 ft. (77 cm) below the earth’s surface.

WARNING:

Do not

risk.

Central

Office Trunk Protection

The telephone company is responsible for providing the following protection of central office (co) trunks at the entrance to the site:

use a metal underground gas piping system—this is a safety

AWG,

■

Carbon blocks or gas discharge tubes connected to an approved

ground

■

Adequate bonding of the central office trunk protector ground and the

power company ground

CAUTION:

Check these requirements with a simple, visual inspection. If you cannot

verify that the central office grounding requirements are met, contact the central office.

Do not

until you are certain that these requirements are met.

connect the control unit to the central office trunks

Installing the Control Unit 2-13

AC Power and Grounding

Heavy Lightning Protection

For most surges, adequate protection is provided by meeting the previously listed requirements. Additional protection is required when the customer is located in a heavy lightning area.

Connect a 147A protector to the system to limit surges from the AC lines and up to four CO trunks.

For systems with more than four CO

■

Connect a 146A protector to

trunks, do the following: the 147A protector, providing protection

for an additional four trunks.

Connect up to three (maximum) 146A protectors to a 147A protector,

■

allowing a maximum of 16 trunks on one 147A protector.

■

For more than 16 trunks, add another 147A protector and continue

adding 146A protectors as needed. See Table 2–3 for various configurations and Figure 2–4 for a typical 147A protector installation.

Table 2-3. Heavy Lightning Protection

Number of CO Trunks Required Protectors

1-4 5-8 9-12

13-16

17-20 21-24

147A 147A and a 146A

147A and two 146As

147A and three 146As Second 147A Second 147A and one 146A

NOTES:

1.2.When you use the second 147A, you can connect the 146As in any combination, up to a maximum of three 146As per 147A.

For detailed installation instructions, see the documentation packaged with the protectors.

2-14 Installing the Control Unit

AC Power and Grounding

CONTROL UNIT

TEL CO LINE

CONTROL UNIT

TEL CO LINE

CONTROL UNIT

TEL CO LINE

CONTROL UNIT

TEL CO LINE

Status

147A Protector

Indicator

Light

Ground

Strap

Connection

AC Surge/Suppressor

Protector

Outlet

146A

Protector

Ground

Strap

To Central

Office

Cross-Connect

Field

TO Control

Unit

#12 or #14 AWG Ground Wire

Connect telecommunications

Figure 2-4. Installing 146A and 147A Protectors

Control Unit

To Power Supply

Module

equipment only to these outlets.

Maximum load 12.5A

Installing the Control Unit 2-15

Unit Loads

A unit load is a measure of power (1.9 watts) that you use to determine the electrical load that the components listed below place on the control unit’s power supply.

■ Telephones and adjuncts

■ 800 DID modules

Only the telephones and adjuncts that connect to the extension jacks (ports) on the control unit require unil

analog and digital

load calculation, When

calculating unit load, do not include any equipment with its own power supply.

Checking Unit Loads

In the event of maintenance or equipment changes, recalculate the unit loads for each carrier where there is a new configuration. Use the worksheet in Appendix B, “Unit Load Calculation Worksheet.”

As a general rule, if you can distribute the 800 DID modules and telephone modules equally across the carriers, you prevent unnecessary drain on any one carrier. However, the rule varies depending on the system’s mode. The next two sections provide the rules for calculating unit loads in various modes.

Unit Loads for Hybrid/PBX Mode

The power supply (model 391A1) generally supports six modules of any type

in Hybrid/PBX mode, without requiring an auxiliary power unit. If the following conditions are true, however, the unit loads on a carrier can exceed the 54-unit maximum and, therefore, require auxiliary power:

All six carrier slots are occupied by MLX telephone or analog multiline telephone modules.

The carrier has a total of more than 45 MLX-20L telephones or

34-button analog multiline telephones installed.

2-16 Installing the Control Unit

Installing the Basic Carrier

Unit Loads for Key or Behind Switch Mode

In a Key or Behind Switch system with four or fewer modules, no calculation is

needed. The power supply (model 391A1) generally supports four modules of

any type.

Auxiliary Power Units

The power supply provides 54 unit loads to each carrier. If the unit load

requirement for a carrier exceeds 54, an auxiliary power unit is needed to

allow that carrier to support up to an additional 27 unit loads.

CAUTION:

Running the system with more than 54 unit loads per carrier may not appear to do harm. However, this can cause the system to malfunction, creating “NO Trouble Found” situations, such as malfunctioning LEDs on multiline telephones or power unit failure.

Any extension that is connected to the modules in the last two slots receives

power from the auxiliary power unit instead of from the power supply.

If an auxiliary power unit is required, refer to “Installing the Auxiliary Power

Unit,” later in this chapter, for instructions.

Installing the Basic Carrier

Continue with this procedure only if you have met all of the requirements discussed earlier in this chapter.

NOTE:

When you mount the basic carrier onto the backboard, leave 29 in. (73.66 cm)

of backboard to the right. This allows you to easily install and remove the control unit cover, and also allows enough room for system expansion to the right for the total length of up to three carriers.

Installing the Control Unit 2-17

Installing the Basic Carrier

To install the basic carrier, follow the steps below:

Mark the screw-hole locations on the backboard, using the basic carrier or the template supplied with the plastic preassembled backboard as a guide. See Figure 2-5.

Make sure the carrier is level before marking the holes.

Drill a pilot hole in the center of each of the four screw-hole marks.

Anchor the screws approximately halfway into the backboard.

Position the carrier on the screws and slide the carrier to the left.

4 5

Tighten the screws.

Mounting ‘\ ‘ Screw \

Mounting Surface

Backboard

Basic

Carrier

Figure 2-5. Marking the Basic Carrier Screw Holes

2-18 Installing the Control Unit

Installing the Power Supply

WARNING:

Do not attach any cab/es or power cords to the power supply until it is installed in the carrier.

Do not power up the control unit until all of the modules and power

equipment are installed. Once they are installed, refer to “Powering Up the System, ” later in this chapter. Failure to comply with this procedure can result in shock hazard and or damage to the equipment.

If you are upgrading an older system and a ring generator is specified in the system forms (Control Unit Diagram), install it in the power supply

before putting the power supply in the carrier. The procedure is detailed

in Maintenance and Troubleshooting.

For expansion carriers only, a copper shield must be installed on the power supply before installing it in the carrier. The procedure is

explained in “Installing a Copper Shield,” later in this chapter.

Before touching leads, connectors, pins, and other components, use a properly grounded wrist strap, to prevent damage from electrostatic

discharge (ESD).

Remove the protective cover from the gold-finger connector (on the

back of the power supply) before inserting it into the carrier.

Installing the power supply can involve as many as four procedures,

depending on the system configuration. The procedures are:

■ Turning off all power to the control unit

■ Installing a copper shield

■ Installing the ferrite cores

Installing the Control Unit 2-19

Installing the Power Supply

NOTE:

It is not necessary to install ring generators in a new system with new012 (apparatus code 517G13 or later letter) modules or new 008 (apparatus code 5171328 or later letter). If you are upgrading or using older modules, see Maintenance and Troubleshooting.

Turning Off the Power

1 Turn off each power supply. 2 Disconnect all power cords and auxiliary units.

Installing a Copper Shield

The added power supply in each expansion carrier can cause excessive

noise in the module occupying the next slot, To eliminate this noise, a copper foil shield is installed over the power supply. These shields and their labels are packaged in the power unit shielding kit included with the expansion carrier.

To install a copper shield, follow the steps below. Refer to Figure 2-6 throughout the procedure.

Make sure all power is off.

Place the power supply on a flat surface with the right side up (as viewed from the front edge).

Wipe the module free of any dust or dirt.

Peel the backing paper from the smaller copper-foil shield to expose the

adhesive.

Check the positioning of the foil shields before sticking them to the side of the module. Once in place, the foil is difficult to remove.

Position the foil on the upper part of the module and work out any air bubbles as you press the foil firmly in place.

2-20 Installing the Control Unit

Installing the Power Supply

Peel the backing paper from the larger copper-foil shield to expose its

adhesive.

7 Position the foil on the lower part of the module.

a The shields must meet. b They should not overlap or have any space between them.

. .

Installing the Control Unit 2-21

Installing the Power Supply

Upper Copper Foil Shield

Lower Copper Foil Shield

Power Unit Information Label

UL Label or CSA Label

Figure 2-6. Installing a Copper Shield in the Power Supply

Tuck the foil shield tightly along the ledge (or crease) of the housing and

work out any air bubbles as you press the foil firmly in With the copper-foil shield in place, put the power unit

place.

information label

on the lower piece of foil.

Attach the UL or CSA label on the power supply below

the copper-foil

shield.

2-22 Installing the Control Unit

Installing the Power Supply

Installing the Power Supply Module

in the Carrier

1 Lower the power supply module hook onto the rod on top of the carrier.

2 Make sure the connector on the module mates properly with the

connector on the carrier.

3 Push the module into the carrier until it locks into place.

Installing the Ferrite Cores

At this point, the power supply should have been installed in the carrier, but there should be no cables or power cords attached to the power supply module.

NOTE:

If you are upgrading a system, unplug the AC power cord and remove the ground wire attached to the grounding screw on the front of the power supply.

Follow these steps to install the ferrite cores:

Feed the AC power and ground wire through the wire manager (refer to Figure 2-7).

Open the ferrite cores by unsnapping the plastic case.

Attach a ferrite core around the AC power cord and the ground wire by snapping the plastic case shut.

Attach the second ferrite core adjacent to the first ferrite core by repeating Steps 2 and 3.

Slide the ferrite cores between the wire manager and the power supply

module (refer to Figure 2-7). Attach the ground wire to the grounding screw on the power supply

module.

Check that the other end of the ground wire is connected to the terminals of the single-point ground baron the AC outlet box.

Installing the Control Unit 2-23

Installing the Power Supply

CAUTION:

Do not connect the power cord until the entire control unit is assembled.

POWER SUPPLY MODULE

AC Power Cord

Ground Wire

Attach

Ferrite Cores

(Open Position)

Figure 2-7. Installing the Ferrite Cores

On/Off Power Indicator (Green LED)

-48 VDC Auxiliary Power Input Jack On/Off Switch AC Power Input Grounding Screw

Wire Manager

Feed AC Power Cord and Ground Wire through Wire Manager

2-24 Installing the Control Unit

Installing the Auxiliary Power Unit

The Control Unit Diagram on the back of Form 1, System Planning, indicates whether an auxiliary power unit is required for the carrier that you are

installing.

NOTE:

Use the 9024 auxiliary power unit for new installations. You can continue to use a previously installed 335A auxiliary power unit, as long as no new

telephones or modules are added to the carrier. To install an auxiliary power unit, follow the steps below. Refer to Figure 2-8

throughout this procedure.

Turn off the switch on the power supply.

Mount the auxiliary power unit on a surface (preferably the backboard) within 2 ft. (61 cm) of the control unit.

Plug the power unit line cord into the AUX POWER INPUT jack on the

power supply.

Plug the other end of the line cord into the AUX POWER jack on the auxiliary power unit.

CAUTION:

Do not plug the power supply or the auxiliary power unit into the AC outlet until you are ready to turn on the system, as described in

“Powering Up the System” later in this chapter.

If the system is backed up by an Uninterruptible Power Supply (UPS), connect the auxiliary power to the UPS.

Do not attach the power cord(s) to any building surfaces. Use only the power unit line cord supplied with the auxiliary power unit.

An incorrect cord will damage the power supply and may damage

modules.

Installing the Control Unit 2-25

Installing the Auxiliary Power Unit

Auxiliary

Power

Unit

-48 VDC Auxiliary

Power

lnput

Input

-48 VDC

Power Cord

Ground Wire

AUX Power Unit AC Power Cord

Outlet

Figure 2-8. Installing an Auxiliary Power Unit

Ferrite Cores

Control Unit

AC Power Cord

2-26 Installing the Control Unit

Installing Expansion Carriers

If you are adding an expansion carrier to an existing system, see “Upgrading

the Control Unit” in Chapter 9 before continuing.

If you are to install one or more expansion carriers, follow the steps below to mount each one. Refer to Figure 2–9 and Figure 2–5 throughout the procedure.

Locate the breakaway plastic tab on the right side of the previously mounted carrier, Using a flat-blade screwdriver, gently pry the tab open to expose the card extender.

Align the connector of the expansion carrier with the card extender on the previously mounted carrier and slide the connector onto the

extender. Mark the screw-hole locations on the backboard, using the expansion

carrier or the template that comes with the preassembled plastic backboard as a guide.

Make sure the carrier is level before marking the holes.

Disconnect the expansion carrier connector from the previously mounted

carrier and put the expansion carrier aside. Drill a pilot hole in the center of each of the four screw-hole marks.

Anchor the screws approximately halfway into the backboard.

If housing clips are to be installed on the housing and this is the last

carrier in the control unit, place the housing clips around the right-hand

molding for the screws on the back of the carrier.

If not, go to Step 8.

Position the expansion carrier on the screws and slide it to the left, to

reconnect the expansion carrier card extender to the previous carrier’s

connector.

Make sure the connection is secure.

9 10

Make sure the carrier is level and that the housing clips extend as far as

possible from the right side of the carrier.

Tighten the screws.

Installing the Control Unit 2-27

Installing Expansion Carriers

BASIC CARRIER

CONNECTOR

CARD EXTENDER (under the

breakaway tab)

BACKBOARD

BASIC CARRIER EXPANSION CARRIER

EXPANSION CARRIER

BACKBOARD

Figure 2-9. Connecting the Carriers

2-28 Installing the Control Unit

Installing the Processor

Installing the processor includes the following procedures:

■

If both of the following conditions are true, follow the Chapter 9, “Modifying the Processor for Key Mode.”

— Form 1, System Planning, indicates Permanent Key mode. — Form 2c, System Numbering: Line/Trunk Jacks, indicates no GS

(ground-start) trunks in the Incoming Trunk Type column.

■

Insert the processor into the carrier as indicated in "Installing the Processor in the Carrier,” later in this chapter.

NOTES:

1. If the system is programmed for Permanent Key mode, check the switch setting. Refer to Chapter 9, “Modifying the Processor for Key Mode” for detailed procedures. If the switch is set to Permanent Key-only operation,

all trunks revert to loop-start. If the switch is not set, any programmed designation for ground-start trunks is retained.

procedures in

The ground-start pool never has trunks assigned to it automatically, but

must be programmed after the ground-start ports are designated. Groundstart trunks are assigned to the ground-start pool on initialization, except in a system switched for Permanent Key mode operation. (In Release 1.0, ground-start and loop-start trunks automatically defaulted to loop-start.)

2. Beginning with Release 3.0, the feature module required for Release 2.1 and earlier is no longer needed. The Release 3.0 processor module contains a PCMCIA memory card interface capable of accommodating a 4-MB memory card. This card is used to install or upgrade system software and perform firmware upgrades on circuit modules. It can be

used to backup and restore system programming.

Installing the Control Unit 2-29

Installing the Processor

CAUTION:

Before touching leads, connectors, pins, and other components when handling the circuit board, use a properly grounded wrist strap to prevent damage from electrostatic discharge (ESD).

Installing the Processor in the Carrier

To install the processor in the carrier, follow the steps below, Refer to Figure

2-10.

Remove the protective cover from the gold-finger connector on the back of the processor.

Lower the hook on top of the processor module onto the rod on top of

the carrier in Slot 0, the first slot next to the power supply.

Make sure that the connector on the module mates properly with the

connector on the carrier as you swing the processor down into place.

CAUTION:

To avoid damage, do not force the module. If the module does not insert easily, press the bottom rear locking tab, remove the module, and inspect the module and carrier for damage or obstruction. The bottomrear locking tab is shown in Figure 2–10. This tab is used on all modules.

If there is no damage and no obstruction, reinsert the module.

A damaged carrier or module must be replaced.

Push firmly until the processor snaps into place.

The processor should be securely attached to the carrier and locked in place

by the locking tab on the bottom rear of the processor.

2-30 Installing the Control Unit

Installing the Processor

Figure 2-10. Installing the Processor into the Carrier

Installing the Control Unit 2-31

Installing the Modules

CAUTION:

Use a properly grounded wrist strap to prevent damage from electrostatic discharge (ESD) when installing the modules, and avoid touching leads, connectors pins, and other components.

Guidelines

Follow these guidelines when you install modules, as indicated on the Control Unit Diagram of Form 1, System Planning:

Do not leave empty slots between modules. The system ignores modules installed beyond any empty slot.

If a phantom module (a programmed empty slot) is indicated on the Control Unit Diagram, make sure the slot remains empty and do not install any modules to the right of it. The system ignores any modules installed to the right of a programmed empty slot.

Make sure you install each module in its assigned slot. If you install a module in the wrong slot, the system will not function properly,

Be sure to place all 012 modules and all 008 OPT modules without built-in ring generators in carriers with modules that have ring generators so that the modules without ring generators can be

supported.

Once you have installed the power supply and the processor in the basic carrier, use the remaining slots for the modules as follows:

— Basic carrier: slots 1 through 5 — First expansion carrier: slots 6 through 11

— Second expansion carrier: slots 12 through 17

2-32 Installing the Control Unit

Installing the Modules

Installing Modules

To install modules starting from slot 1 (the first open slot next to the

processor), follow the steps below:

For each 400EM tie line/trunk module, for jacks numbered 1 through 4 in Figure 2-11, check Form 3c, incoming Trunks: Tie, for E&M signaling

type.

Set the dual in-line packaging (DIP) switches on the front of the 400EM Tie Trunk module according to the E&M signaling type settings listed in Table 2-4 and Table 2–5 and shown in Figure 2–11. The default E&M signal does not

require any adjustments in the DIP switches.

Remove the protective cover from each module’s gold-finger connector. Lower the hook on top of the module onto the rod on the top of the

carrier in the appropriate slot. See Figure 2--10.

Make sure the connector on the module mates properly with the connector on the carrier.

Swing the module into the slot and firmly push the module into the carrier until it locks into place.

CAUTION:

To avoid damage, do not force the module. If the module does not insert easily, press the bottom rear locking tab, remove the module, and inspect the module and carrier for damage or obstruction.

If there is no damage and no obstruction, reinsert the module, A damaged carrier or module must be replaced.

Repeat Steps 1 through 5 for each module you want to install.

Installing the Control Unit 2-33

Installing the Modules

Tie Trunks

Tie trunks connect two separate PBX communications systems either directly or through one or more central offices, as if they were one system at the same

location, In the MERLIN LEGEND Communications System, the 400EM module is the originating and terminating unit for tie trunk operation.

Tie Trunk Signaling

The 400EM (tie trunk) module can transmit signals in three different formats.

Each format is made up of a specific signaling mode and a specific signaling type. The DIP switches on the 400EM module allow you to select the signaling mode for tie trunk transmission. The signaling type is selected through system

programming.

Signaling Modes

There are two signaling modes:

■

E&M.

This is a standard interface. The E&M signaling leads are

separate from the transmission leads, requiring a 3-pair wire interface.

■

Simplex.

In Simplex, the two signaling leads are superimposed onto the analog transmission leads, providing a 2-pair wire interface for connecting two local systems at minimal cost.

Protected or Unprotected

Depending on the type of tie trunk installation, protective resistance may be installed to protect the circuit from outside interference from high-voltage

transients or voltage fluctuations. In Simplex mode, the circuit always requires

protective resistance. The E&M mode can be either protected or unprotected, depending upon the location of the distant PBX.

Signaling Types

Three different signaling types combine with the signaling modes, Together these create the proper signaling format for each system. Signaling types in each mode are as follows:

2-34 Installing the Control Unit

Installing the Modules

E&M Mode

—Type 1 Standard

connect two systems through telephone company facilities.

—Type 1 Compatible.

(without using telephone company facilities).

Simplex Mode

—Type 5.

This setting is used on 4-wire (2-pair) circuits.

(default factory setting). This setting is used to

This setting connects two systems directly

400EM (Tie Trunk) Module DIP Switches

During installation of 400EM (Tie Trunk) modules, refer to Table 2-4 and

Table 2-5, and to Figure 2-11 for the correct DIP switch settings for varying

signaling protocols.

Table 2-4. Setting the 400EM (Tie Trunk) Module DIP Switches

Ports DIP

(as numbered in

Figure 2-11)

Switch

Position

2 3

5 6 7 8 9

Signaling Type

1S (Default)

and 1C

Unprotected

E&M Mode

ON OFF OFF OFF OFF

E&M Mode

1C and 1S

Protected

OFF OFF OFF or ON OFF

OFF OFF OFF OFF or ON

OFF OFF

Simplex

Mode

OFF or ON

ON ON ON

OFF or ON

ON ON

Installing the Control Unit 2-35

Installing the Modules

NOTE:

DIP switches 1, 2, 6 and 7 unprotected. DIP switches mode is always protected. DIP switches 1, 2, 6 and 7

The successful implementation of a tie trunk format is dependent upon matching the characteristics of both the PBX systems it connects. The preferred signaling formats for a tie trunk originating in the system are shown in Table 2–5 below.

Table 2-5. Signaling Formats for the 400EM (Tie Trunk) Module

determine whether the tie trunks are protected or

3, 4, 5, 8, 9, and 10 determine the mode. Simplex

Therefore the Protected/Unprotected settings for

have no effect.

Installation Situation

From System

System

Distant Signaling

MERLIN II

System 25/75/85 co-located or DEFINITY

System 25/75/85 or DEFINITY

Dimension PBX Same site

Dimension PBX Inter-office E&M Type 1C

Other Systems

MERLIN LEGEND co-located

Location

Same site co-located

Same site

Inter-office Type 5 Simplex

co-located (Compatible)

Same site co-located Inter-office

Same site

or inter-office

Mode/Type

Type 5 Simplex

E&M Type 1 C

(Compatible)

E&M Type 1 C

(Compatible) (Standard)

E&M Type 1 C (Compatible)

Type 5 Simplex

Preferred Signaling Format

Distant Location

Protected or Unprotected Mode/Type

N/A Type 5 Simplex

N/A Type 5 Simplex N/A

N/A

Unprotected

Protected

Unprotected

N/A

Signaling

Type 5 Simplex

E&M Type 1 S (Standard) E&M Type 1 S (Standard)

E&M Type 1S

E&M Type 1 S (Standard) Type 5 Simplex

Protected or Unprotected

N/A

Unprotected

Protected

Unprotected

Requires a protection unit N/A

2-36 Installing the Control Unit

Installing the Modules

400 EM Module

Switches

1 through 5 control Port 4

(1C. E&M unprotected)

Switches 6 through 10 control Port 3 (1C. E&M protected)

Switches 1 through 5 control Port 2 (5 simplex)

Switches 6 through 10 control Port 1

(1C.

E&M

protected)

Figure 2-11. 400EM Module Sample Dip Switch Settings for Signaling Types 1C and 5

Installing the Control Unit 2-37

Installing the Modules

Labeling

After all modules have been installed, label all jacks with the numbered

labels provided with the feature module.

■ Line/trunk labels have green numbers on off-white background.

■ Telephone labels have blue numbers on off-white background.

See Figure 2-12 for the locations of line/trunk jacks and telephone jacks on each module, and label them as described next.

Label each line/trunk jack on the modules sequentially, 1 through 80.

Begin with the module in slot 1, numbering from bottom to top on each module and working from left to right across the carrier(s).

The 100D module has 24 numbers assigned to the line/trunk jack.

Label each telephone jack sequentially, 1 through 144. Begin with the

module in slot 1, numbering from bottom to top on each module and

working from left to right across the carrier(s).

CAUTION:

The 008 OPT module is assigned 12 logical IDs, and the last four numbers are not assigned to jacks. For example, if the previous module (on the left) is labeled with logical IDs 1 through 8, label the 008 OPT

jacks with logical IDs 9 through 16. Skip numbers 17 through 20. When

you label the next module (on the right), label the first jack as logical ID

21.

2-38 Installing the Control Unit

Installing the Modules

PFT Jack

8 5

Line/Trunk or Off-Premise

Telephone Jacks on 008 OPT Module

Extension Telephone Jacks (Analog or Digital)

* These four jacks are

used for extension

telephones on the 012 Module.

Figure 2-12. Line/Trunk and Telephone Jack Locations on Each Module

Installing the Control Unit 2-39

Replacing a Module

CAUTION:

This section does not apply to the processor or power supply.

Although the system allows you to remove and replace modules

affecting call processing, partially inserting and removing a module can

cause a cold start. To add a 100D module or change any of its DS1 parameters, the system

must be idle.

When you replace a module, use the same module type. For example,

do not put a 008 MLX module in place of a 400 GS/LS/TTR module. If a

module is replaced with another type of module, or if a module is added

to the system without powering down the system first, a cold start (System Reset) occurs.

If you move any module to a different slot, be sure to renumber the modules by selecting

System Programming for information about board renumbering.

NOTE:

You can remove and replace line/trunk and extension modules with the

system power on, without affecting normal call processing.

Board Renumber

from system programming. See

without

2-40 Installing the Control Unit

Replacing a Module

To remove and replace a module, follow the steps below, Refer to Figure 2-

13.

Busy-out or reset the module. (Busy-out is recommended.)

Label all cords (if they are not labeled already) and then unplug them from the module.

For information about labeling trunk and extension cords, see Chapter 3,

“Installing Telephones and Adjuncts” and Chapter 4, “Connecting the Control Unit to the Network Interface.” For instructions on checking unlabeled wiring,

see “Checking Unlabeled Wiring” in Chapter 3 of the Maintenance and

Troubleshooting guide.

Run a demand test by entering the test mode.

Power down the system, if required. See “Powering Down the System,” later in this chapter, for instructions.

Remove the module by pushing up firmly

the module. While holding up the tab, swing the bottom of the module towards you

and away from the carrier. Lift up the module to disengage it from the rod on the top of the carrier.

Inspect the module for visible damage.

Insert the new module. See Figure 2-10.

Restore the module. Refer to Chapter 7, “Initializing and Testing the

System,” for instructions.

Connect the trunk and extension cords.

Attach a tag, error printout, and any information that will help identify any

visible problems or failure symptoms.

the tab at the bottom rear of

Installing the Control Unit 2-41

Replacing a Module

Figure 2-13. Removing Modules from the Carrier

2-42 Installing the Control Unit

Connecting the Control Unit to an AC Outlet

CAUTION:

Make sure the AC outlet has been tested for proper grounding. The outlet should be 117-V AC, 60-Hz, 3-wire (phase, neutral, ground). See

“AC Outlet Tests,” earlier in this chapter, for instructions.

To prevent someone from accidentally shutting off the power, do not

connect the control unit to a switch-controlled outlet. The AC outlet

should be within 5 ft. (152 cm) of the control unit.

To connect the control unit to a dedicated AC outlet, follow the steps

Turn the basic carrier’s power supply switch to the OFF position.

Turn off the power supply switches on the expansion carriers.

Unplug the power cords from any auxiliary power units.

Plug one end of the power cord into the AC INPUT connector just below

the power switch on the front of the basic carrier’s power supply.

Plug the other end of the power cord into the AC outlet, allowing at least

1 ft. (30.4 cm) of slack in the cord. Repeat Steps 4 and 5 for each expansion carrier.

below.

CAUTION:

Do not attach the power cord(s) to any building surfaces.

Installing the Control Unit 2-43

Powering Up the System

CAUTION:

Follow the procedure below to power up the system only if the system is completely installed, failure to comply with this procedure can result in shock hazard or damage to the equipment.

1 Turn

supply in the rightmost carrier.

The green power lights on each expansion carrier power supply should turn

2 Turn on the power switch on the basic carrier power supply.

3 If any of these conditions are not met, refer to Maintenance and

Troubleshooting.

on the power switch for each expansion carrier: start with the power

on.

The dot on the one-character display LED flashes. The green light on the power supply should turn on. The red light on the processor should turn on for 15 to 45 seconds and

then turn off. All indicators on the 100D and 400EM line/trunk modules (if present)

should turn on and then off. They remain off when the modules are idle.

2-44 Installing the Control Unit

Powering Down the System

You may need to power down the system for troubleshooting during

installation, or to add new equipment to the carrier.

CAUTION:

Follow these steps in the exact sequence.

To power

Turn off the power supply on the basic carrier.

Turn off the power supplies on the expansion carriers.

2 3

Unplug any auxiliary power units.

Because the power supplies are already off, the sequence for removing auxiliary power cords is not important.

Unplug the system from the AC outlet.

down

the system, follow the steps below.

Installing the Control Unit 2-45

Powering Down the System

2-46 Installing the Control Unit

Installing Telephones and Adjuncts

The control unit supports the MLX-10, MLX-10D, MLX-10DP, MLX-20L, and

MLX-28D telephones, with or without Direct Station Selectors (DSSs), as well as analog multiline and single-line telephones. It also supports various adjuncts, which may require Multi-Function Modules (MFMs) or other adapters for installation.

This chapter provides installation instructions for the following procedures:

Installing Multi-Function Modules Installing adjuncts Installing Direct Station Selectors Assembling Connecting telephones to the control unit

To connect data equipment to the system, see Chapter 6, “Connecting Data

Equipment.” To connect the MERLIN PFC, see Chapter 8, “Installing Applications.”

MLX

telephones

Installing Multi-Function Modules

The Multi-Function Module (MFM) is an optional adapter that provides a

modular jack connection to MLX telephones for the two classes of adjuncts

listed below:

Installing Telephones and Adjuncts 3-1

Installing Multi-Function Modules

Tip/ring (T/R) devices such as single-line telephones, fax machines, modems, and credit card verification terminals. Once connected, the MLX telephone and adjunct work independently of each other. This means they can send and receive calls at the same time. The MFM is

the only T/R adapter you can use with MLX telephones.

Supplemental alerts such as bells, chimes, horns, and strobes. These alerts notify people in noisy areas of incoming calls.

Considerations

Review the following items before you begin the procedure.

If you install an MFM, do so before you assemble the MLX telephone.

You must connect the KS 22911 power supply to an electrical outlet within 50 ft. (15 m) of cord length of the MLX telephone.

If you connect an MFM and two DSSs to a telephone, you must install

a 406743419 power unit.

If a wall jack is more than 7 ft. (213 cm) from an MLX telephone, you

must use a longer D8W cord. The MFM uses one of the two channels when it is active, This means

that when an adjunct, such as a fax machine, and the MLX telephone are in use at the same time, Voice Announce to Busy is not possible. (Voice Announce to Busy is a feature that allows users to be paged on the speakerphone even if they are on a call.)

The MFM has two jumper blocks that are factory-set for T/R operation. The MFM is packaged with the following items, shown in Figure 3-1:

— KS22911 power supply — 400B or 400B2 adapter — D6AP cord

3-2 Installing Telephones and Adjuncts

Installing Multi-Function Modules

400B Adapter or 400B2 Adapter



●  ✎

❆

✌

Power Supply

(KS22911)

Multi-Function Module

Figure 3-1. Multi-Function Module Packing List

RISK OF ELECTRICAL SHOCK: Follow all warnings and cautions. WARNING:

Only

a qualified technician should install, repair, or set options for an

MFM. Do not touch the circuitry on the MFM. Touching the circuitry may result

in component damage from electrostatic discharge.

Installing Telephones and Adjuncts 3-3

D6AP Cord (7 feet long)

Installing Multi-Function Modules

Before installing an MFM, disconnect all trunk and/or power cords that are attached to the MLX telephone. This is to ensure that no hazardous

voltages are present during installation. Ringing voltage from the MFM attached to the MLX telephone can cause electrical shock if adjustments are made while the cords are connected.

Deskstand

Telephone

Base

Line Cable

Card Tray

Figure 3–2. Removing the User Card Tray and Line Cable

To install or replace an MFM and change its pin settings, follow these steps.

NOTE:

If you

are installing or replacing an MFM in a wall-mounted MLX-10, MLX-10D,

or an MLX-10DP telephone, start at Step 3.

1 Place the telephone face down on a flat surface; remove the user card

tray and line cable from the bottom of the deskstand. See Figure 3-2.

3-4 Installing Telephones and Adjuncts

Installing Multi-Function Modules

Pull Up and Away

Press Center Tab

Figure 3-3. Releasing the Deskstand

2 Release and remove the deskstand from the telephone,

See Figure 3-3

and Figure 3-4.

a Press on the top rear center of the deskstand to release the tab. b Pull the deskstand up toward you and swing away from the telephone.

Installing Telephones and Adjuncts 3–5

Installing Multi-Function Modules

Lift out of Center Slot

Figure 3-4. Removing the Deskstand

c Lift the deskstand out of the locating slot in the telephone base and place

to one side.

3-6 Installing Telephones and Adjuncts

Installing Multi-Function Modules

Figure 3–5. Releasing the Module Cover Screw

3 Release and remove the module cover. See Figure 3-5, Figure 3-6, and

Figure 3-7.

a Use a screwdriver to remove the screw in the lower righthand corner of the

module cover.

Installing Telephones and Adjuncts 3–7

Installing Multi-Function Modules

MFM

Module

Cover

Locating Slot

Pull Up and Away

Press Center Tab to Release

Figure 3-6. Releasing the Module Cover

b Press the center of the right side of the module cover with one hand to

release the locking tab.

c Swing open the module cover to release it from the left side locating slot.

3-8 Installing Telephones and Adjuncts

Installing Multi-Function Modules

Lift Out of locating Slot

Figure 3–7. Removing the Module Cover

d Lift module cover out of locating slot and place to one side.

Installing Telephones and Adjuncts 3–9

Installing Multi-Function Modules

Locking Tab

Line Jack

Locking Tab

Socket — Connector

Pins

Locking Tab

Figure 3-8. Removing an MFM Module

Handset Jack

To install a new MFM, go to Step 5. To reset jumpers on an existing MFM, go to Step 6. To remove an existing MFM, continue (see Figure 3-8).

a Disconnect any cords attached to the phone and note the connections so

that you can reconnect the cords to the appropriate jacks later.

b Locate the MFM locking tabs on the top and bottom of the telephone base,

then spread the tabs apart to release the MFM.

c Grasp the MFM by the edges and pull it up to free the connector pins. Do

not touch the Connector pins.

d Set the MFM aside on a clean surface.

3-10 Installing Telephones and Adjuncts

Installing Multi-Function Modules

Locking Tab

Socket

Connector Pins

Locking Tab

Line Jack

Handset Jack

Locking Tab

Figure 3-9. Installing an MFM Module

5 Install the new MFM. See Figure 3-9.

a Hold the MFM circuit board by the edges with the long connector pins

facing the socket. Take care not to touch the connector pins.

b Lower the MFM to insert the pins into the socket in the telephone base,

c Press firmly on the MFM board to snap the locking tabs into place. The

connector pins and tabs must be secure.

Installing Telephones and Adjuncts 3-11

Installing Multi-Function Modules

Multi-Function Module

Pins

and

Jumper

Placement

T/R Operation Setting

A, B, W and Y

Figure 3–10. Setting and Adjusting the MFM Jumpers

6 Set or adjust the MFM jumpers for either a T/R device or a supplemental

alert device. See Figure 3-10.

a Pull the four connectors off of the MFM module.

b Place the connectors over the appropriate pins for the required operation,

and push down to secure into place.

SAA Setting

A, C, X and Z

3-12 Installing Telephones and Adjuncts

Installing Multi-Function Modules

MFM Jack Guard Cover

Figure 3-11. Removing the Jack Guard

7 To remove the jack guard, see Figure 3-11.

a If the module cover has a square jack guard that protects the TEL/OTHER

jack area, grasp and twist the guard to remove it.

Save the jack guard if you are wall-mounting an MLX-10 or MLX-10D

telephone.

Installing Telephones and Adjuncts 3-13

Installing Multi-Function Modules

Lower Cover Into Locating Slot

Figure 3–12. Placing the Module Cover into the Locating Slot

8 To replace the module cover, see Figure 3-12, Figure 3-13, and

Figure 3-14.

a Place the locking tab on themodule cover into the slot on the left side of

the telephone.

3–14 Installing Telephones and Adjuncts

Installing Multi-Function Modules

Lower and Press Into Center Slot to Secure

Figure 3-13. Lowering and Locking the Module Cover

b Lower the cover to the right and press firmly into the center slot to lock the

tab in place. The tab must be secure.

Installing Telephones and Adjuncts 3-15

Installing Multi-Function Modules

Figure 3-14. Replacing and Tightening the Module Cover Screw

c Replace and tighten the module cover screw that you removed in Step 3.

3–16 Installing Telephones and Adjuncts

Installing Multi-Function Modules

Lower Into Inner Center Slot

Figure 3-15. Replacing the Deskstand

9 Replace the deskstand. See Figure 3-15. If you are wall-mounting an

MLX-10, MLX 10D, or MLX-10DP telephone, go to Step 11; otherwise, continue with Step 9a.

a Place the tab on the narrow edge of the deskstand, into the locating slot

on the telephone base.

Installing Telephones and Adjuncts 3-17

Installing Multi-Function Modules

Lower

and

Press Into Center

slot

Figure 3–16. Lowering the DeskStand and Locking into Place

b Lower the deskstand and lock into place.

3-18 Installing Telephones and Adjuncts

Installing Multi-Function Modules

Deskstand

Telephonet Base

Line Cable

Card

Tray

Figure 3–17. Replacing the User Card Tray and Line Cable

10 Replace the user card tray and line cable. See Figure 3-17.

a Insert the user card tray at an angle, then lower and slide into the

deskstand.

b Replace the

line cable into the line jack in the deskstand.

Installing Telephones and Adjuncts 3-19

Installing Multi-Function Modules

Pull Up

Press Center Tab

Deskstand

Telephone Base

Card

Tray

Line

Cable

Figure 3-18. Adjusting the Deskstand Height

11 Adjust the deskstand height. See Figure 3-18.

a To change the deskstand’s height from low to high, press the top rear

center of the deskstand to release the tab. b Pull the deskstand up and insert the tab into the slot in the module cover. c To readjust the stand, see the instructions on the bottom of the card tray.

12 Power up the telephone. See Figure 3-19.

a Plug the D8W cord from the telephone into the 8-conductor (large)

modular jack of the 400B or 400B2 adapter.

3-20 Installing Telephones and Adjuncts

Installing Multi-Function Modules

AC Power

Wall Jack

400B2

Outlet

Adapter

D6AP

Power Supply

D8W

Dss

Figure 3–19. Powering Up the Telephone after Installing the MFM

b Connect one end of the D6AP cord to the 2-conductor (small) modular jack

on the 40013 or 40092 adapter, and plug the other end into the modular

jack of the 406943837 power supply. The total length of the cords

connecting the power supply to the MLX telephone must be less than or equal to 50 ft. (15 m).

CAUTION:

Do not plug the D6AP cord into the 8-conductor (large) modular jack on the 400B or 400B2 adapter; doing so can cause electrical damage to the control unit and to the telephone.

Installing Telephones and Adjuncts 3-21

Installing Adjuncts

c Plug the power supply into a 117-V AC outlet that is not controlled by a

wall switch.

d Insert the plug end of the 400B or 400B2 adapter into the wall jack.

Test the MFM for T/R operation.

See “Testing MLX Telephones with MFMs” in Chapter 7.

Attach the adjunct to the MFM. See “Installing Adjuncts.”

Installing Adjuncts

This section provides general instructions for connecting most adjuncts.

NOTE:

If you need to connect the adjuncts differently from the instructions on the system forms, record each jack and adjunct change on the appropriate system numbering form. See Appendix A, “System Numbering Forms. ”

Connect one end of the cord packaged with the adjunct (usually a D4BU cord) to the adjunct.

See the documentation packaged with the adjunct for instructions.

Check the system form for the adjunct you want to connect. Then refer to

the appropriate step below.

■

To connect an adjunct to an MLX telephone, go to Step 3.

■

To connect an adjunct to a single-line telephone, go to Step 4.

■

To connect an adjunct to an analog multiline telephone, go to Step 5.

■

To connect an adjunct to a 012 module, go to Step 6.

When you connect adjuncts to telephones, make sure you route the adjunct

and D8W telephone cords through the cord channel. See Figure 3–20.

Insert the other end of the adjunct cord into the TEL/OTHER jack on the

back of the MLX telephone. Go to Step 7.

3–22 Installing Telephones and Adjuncts

Installing Adjuncts

Adjunct

Cord Channel

D4BU Connects to

TEL/OTHER

Jack

Line

D8W

400B

MLX-10™

Desk Telephone

D8W

Line

Wall-Mounted Telephone

MLX-10™

Figure 3–20. Routing the Cord(s) Through the Cord Channel

4 To connect an adjunct to a single-line telephone:

a Connect a 26A2 bridging adapter to the telephone. b Connect the cord from the adjunct to the bridging adapter. c Reconnect the cord from the control unit to the bridging adapter. d Go to Step 7.

Installing Telephones and Adjuncts 3–23

AT&T Release 3.0 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

About This Book

Intended Audience

How to Use This Book

Terms and Conventions Used

Product Safety Labels

Security

Related Documents

How to Comment on This Document

Introduction

Installation Sequence

System Forms

Programming the System

Upgrading the System

Installing the Control Unit

Overview

AC Power and Grounding

Unit Loads

Installing the Basic Carrier

Installing the Power Supply

Installing the Auxiliary Power Unit

Installing Expansion Carriers

Installing the Processor

Installing the Modules

Replacing a Module

Connecting the Control Unit to an AC Outlet

Powering Up the System

Powering Down the System

Installing Telephones and Adjuncts

Installing Multi-Function Modules

Installing Adjuncts