AT&T RELEASE 2 User Manual

AT&T

MERLIN

COMMUNICATIONS SYSTEM

Release 2

Installation Manual

Plus

NOTICE

The information in this document is subject to change without notice. AT&T assumes no responsibility for any errors that may appear in this document.

MERLIN is a registered trademark of AT&T. IDEAL EZ Check is a registered trademark of Ideal Industries, Inc.

To order copies of this document, call the AT&T Customer Information Center, 1-800-432-6600 and

include the document number 518-600-008 with your order.

Issue 1

August, 1988

Contents

Introduction

Step 1: Installing the Control Unit

FCC Regulations Prepare the Network Interface Test the Outside Lines Mounting the Control Unit Insert the Modules Connect the Control Unit to the AC Outlet Connect the Outside Lines to the Control Unit

Step 2: Wiring the Voice Terminals

Preparation Considerations Voice Terminal Wiring Procedure

Step 3: Connecting the Voice Terminals

Prepare the Voice Terminals Connect Each Voice Terminal to the System Testing Each Voice Terminal Auxiliary Line Telephone

3 3

3 5

12 15 16

19 19

22 22

24 24 29

Step 4: Testing the System

Test the Voice Terminal Jacks for a Dial Tone Place an Outside Call Place an Intercom Call Test Each Line Number Speakerphone Performance Tips

Step 5: Adding Accessories

Accessory Equipment

Step 6: Changing the System

Adding an Outside Line Adding a Voice Terminal Moving a Voice Terminal

Jack Field Wiring Supplement

Constructing and Connecting the Jack Field Extending the Network Interface to the Jack Field

30 30

32 33 34 34

35 35

42 42

42 43

44 45

FCC Registration and Repair Information

Appendix A: System Connectivity Overview

Appendix B: Quick Reference Installation Requirements

Connecting the control unit

Appendix C: Grounding Requirements

Before You Turn the Power On External Grounding

Appendix D: Wiring Reference Tables

Typical System Wiring Installation

Appendix E: Direct Connection Wiring

Direct Connection

Index

57 60

61 61

65 67

69 69

I-1

Introduction

This manual shows you how to install and test a MERLIN®Plus Communications System, Release 2. You should perform the tasks in the order presented since many of the early tasks prepare the system for those to be performed later.

The following is a brief overview of the installation steps in this manual:

Set up and connect the system’s control unit, beginning with the network

●

interface, as described in "Step 1: Installing the Control Unit."

Install the wiring for your voice terminals as described in

●

"Step 2: Wiring the Voice Terminals."

Connect your voice terminals to the system according to the instructions

●

in "Step 3: Connecting the Voice Terminals."

O make sure you’ve installed the system correctly, test the system using

●

T the procedures in "Step 4: Testing the System."

●

Learn about some accessories you may want to add to your system in "Step 5: Adding Accessories."

●

You can easily rearrange your system once it’s in place by following the instructions in "Step 6: Changing the System."

If you are installing a jack field and building wiring, read the instructions in the "Jack Field Wiring Supplement" at the end of this manual before installing the MERLIN Plus system.

When you complete the steps in this manual, you will be ready to customize the system to meet the needs of your business by following the instructions in Section 3, "Administering the System," in the MERLIN Plus System Manual.

NOTE: Your system may not be fully operable until you program and administer it.

For reference purposes, place this manual in the System Manual binder when you are finished with the installation.

Figure 1 shows a typical MERLIN Plus system.

Introduction 1

Figure 1 A typical MERLIN Plus system overview.

Introduction

Step 1: Installing the Control Unit

FCC REGULATIONS

PREPARE THE NETWORK INTERFACE

To comply with FCC regulations, notify your local telephone company of the following before permanently connecting your system to their lines:

● System registration number: AS593M-13529-KF-E

● Ringer equivalence number: 0.8A

● Telephone numbers of the lines to which you are connecting your system

For more information on FCC requirements and regulations, see "FCC Registration and Repair Information" at the end of this manual.

The local telephone company provides you with the telephone numbers for your outside telephone lines as well as an installed network interface with 1-line (RJ11-type) adapters, 2-line (RJ14-type) adapters, or a 50-pin (RJ21-type) connector. See Figure 2.

Figure 2 Network interface 1-line and 2-line adapters, and a 50-pin connector.

Step 1: Installing the Control Unit

The 2-line adapter has two jacks, each of which carries a single-pair line from the 2-line network interface jack. The 50-pin connector (attached to a 66-type block) carries up to 25 lines. You can connect your outside telephone lines from these (or other) network interface connectors to the control unit in many ways. The method you use to connect your outside telephone lines to the control unit depends on the type of network interface the local telephone company installs at the control unit location. The table on the next page tells

you what to do next depending on the type of network interface you have.

If the

Network

Interface Has

And

Do This

A 1-line (RJ11-type) adapter for each outside line

2-line (RJ14-type) adapter for every two outside lines

Each jack is labeled with its telephone number

Each jack is not labeled with its telephone number

Each jack is labeled with the telephone numbers for its outside lines

Each jack is not labeled with the telephone numbers for its two outside lines

Go on to the next procedure, "Test the Outside Lines."

Mark or label each jack with its telephone number from the list provided by the local telephone company.

Go on to the next procedure, "Test the Outside Lines."

Plug

a 2-line adapter into each

jack.

Go on to the next procedure, "Test the Outside Lines."

Mark or label each jack with the telephone numbers for its outside lines from the list provided by the local telephone company.

Plug a 2-line adapter into each jack.

Go on to the next procedure, "Test the Outside Lines."

Step 1: installing the Control Unit

50-pin (RJ21-type)

connector for the outside lines

The interface is labeled with the telephone numbers for the outside lines

The interface is not labeled with telephone numbers for the outside lines

See the instructions for extending the network interface to the jack field in the "Jack Field Wiring Supplement" at the end of this manual.

Mark or label the interface with the numbers for your outside lines.

See the instructions for extending the network interface to the jack field in the "Jack Field Wiring Supplement" at the end of this manual.

TEST THE OUTSIDE LINES

You may want to test whether a dial tone is audible at the network interface connection. If so, you need either a basic rotary dial telephone, a Touch-Tone telephone with a modular cord, or a tool that tests for dial tones. Because a MERLIN Plus system voice terminal works only with a control unit, you cannot use a MERLIN Plus system voice terminal for this test.

Bring the telephone or testing tool to the jacks for your outside lines (either at the network interface or at the jack field).

Plug the telephone’s modular cord or the tool’s testing cord into each outside line jack and listen for a dial tone. See Figure 3.

Figure 3 Testing outside lines for a dial tone.

Step 1: Installing the Control Unit

And

Do This

Each outside line has a dial tone

A line does not have a dial tone

The jack for that line at the network interface is a 1-line (RJ11-type) jack

The jack for that line at

the network interface is a 2-line (RJ14-type) jack with a 2-line adapter

The jack for that line is in the jack field

Go on to the next procedure,

"Mounting the Control Unit."

Have the local telephone company check the line and the network interface. Meanwhile, go on to the next procedure, "Mounting the Control Unit," and continue with the installation.

Replace the adapter with a new one, and test again for a dial tone. If the problem remains, have the local telephone company check the line and the network interface. Meanwhile, go on to the next procedure, "Mounting the Control Unit," and continue with the installation.

Check the wiring run from the jack in the jack field to the connector at the network interface and fix any loose connections. If the problem remains, have the local telephone company check the line and the network interface. Meanwhile, go on to the next procedure,

"Mounting the Control Unit," and

continue with the installation.

MOUNTING THE CONTROL

UNIT

Control Unit Location

The control unit is designed to be mounted on a wall in an environment that meets certain requirements for proper operation. (See Figure 4.) Check that the following environmental and measurement requirements are met before proceeding:

Warning Do not install the control unit in areas that may be exposed

to water leakage or accidental spills of liquids. In the event that liquids come in contact with the control unit, turn off and unplug the unit and contact your AT&T technician immediately.

●

The control unit is within 5 feet of a grounded ac power source. NOTE: If the outlet is not properly grounded, install an 18-gauge (or

thicker) wire from the ground lug on the control unit to the building ground. For more information on grounding and grounding tests, see Appendix C: Grounding Requirements."

In areas of the country with frequent lightning or severe transient voltage, you may also want to provide external protection to the control unit with an ac surge suppressor at the wall power source. You can combine both ac and CO line surge protection with the 147A Protector, installed as described in CIB 3109.

●

The control unit is within cord length of the network interface provided by the local telephone company. Cord lengths are 7, 14, and 25 feet. Also, up to 400 feet of DIW cable can be used to connect the network interface to the control unit.

Step 1: Installing the Control Unit

The control unit is within 6 inches of a jack field.

●

The network interface is available for installation or has already been installed.

The wiring runs from the control unit to the voice terminal locations do

●

not exceed 1000 feet. The temperature range of the location is between 40 and 104 °F

●

40 °C).

(4 to The control unit location is safe from sources of extreme heat (furnaces,

●

heaters, attics, or direct sunlight).

●

The control unit has at least 1 inch of ventilation space around its sides. The control unit location is safe from exposure to corrosive gases, dust,

●

chemicals, or similar substances. The humidity of the control unit location does not exceed 80 percent.

●

FIGURE 4 Diagram of the control unit location.

Step 1: Installing the Control Unit

Equipment

Four 1 1/4-inch No. 8 self-tapping screws come with the system for mounting the unit on a wall. Regardless of the mounting surface, you will need a long-shafted screwdriver for your installation. However, the construction of the wall you have selected for mounting the control unit determines if you

will need additional or substituted items for mounting.

If the mounting surface is:

Concrete

Four 1 1/4-inch No. 8 masonry anchors

You will need:

Brick Concrete block

Plaster

Four 3/16-inch toggle bolts

Plasterboard

Plywood

Sheet metal

Screws supplied and one 9/64-inch drill bit

In addition to the screwdriver and hardware mentioned, you also need:

Pencil or other sharp-pointed marker

●

Notepaper Tape measure

●

Power drill (or hand drill)

●

Appropriate drill bits

Removing Control Unit Covers

Locate and identify the front and top covers of the control unit (Figure 5).

Step 1: Installing the Control Unit

FIGURE 5 The control unit’s front and top covers.

Locate the back of the control unit and note the four screw holes used for securing the control unit to the wall (Figure 6).

FIGURE 6 The control unit (rear view).

As noted in Figure 6, the horizontal distance between the center of these holes measures 8 3/8 inches, and the vertical distance measures 14 7/16 inches. Make note of these measurements since you may need them to locate and drill mounting holes in the wall.

In order to reach the mounting holes from the front of the control unit, you have to remove the front and top covers. Remove the front cover by pressing down on the two top corner tabs and pulling the top away from the control unit, as shown in Figure 7.

FIGURE 7 Removing the front cover from the control unit.

Step 1: Installing the Control Unit

Remove the top cover by first unscrewing the screw located at the center bottom of the cover. This screw is designed to stay in the hole of the cover

after it has been removed from the control unit. Press down on the tab located at the center of the top and back edge and pull the top cover away, as shown in Figure 8.

Once these covers are removed, you can reach the screw holes from the front of the unit.

FIGURE 8 The top cover removed, revealing top screw holes.

Wall-Mounting Procedure

The wall surface and individual circumstances determine the exact procedure for mounting the control unit on the wall. Use the following instructions and Figure 9 as a guide for installing your system.

Using the dimensions shown in Figure 6, mark the centerline positions of the holes to be drilled on the wall.

Place the control unit on the wall where you plan to mount it, and, once you’ve checked that it is level, use the holes in the control unit as guides to mark the positions of the holes to be drilled on the wall.

Place the control unit aside. Drill the four holes and insert the bottom two screws until they are

screwed in about half their length. Fit the control unit’s bottom screw slots on the two screws.

Press the unit against the wall and insert the top two screws.

Tighten all screws.

10 Step 1: Installing the Control Unit

FIGURE 9 Mounting the control unit on the wall.

Step 1: Installing the Control Unit

INSERT THE MODULES

The control unit comes with covers in place and with the following modules already installed:

● Power supply module

Memory module

●

● Line module (line board)

●

Voice terminal module (station board)

You have already removed the front and top covers to mount the unit on the wall. The power supply module is on the left inside the control unit. See Figure 10. The memory module houses a battery that will preserve all programming for at least four days in case of a power failure. The voice terminal module (station board) has 10 jacks for 10 voice terminal connections, and the line module (line board) has 4 jacks for outside line connections and one jack for auxiliary use. Notice the protective safety latches at the bottom of the line and voice terminal module slots.

FIGURE 10 The control unit modules.

Step 1: Installing the Control Unit

If you did not order a second line or voice terminal module, go on to the next procedure, "Connect the Control Unit to the AC Outlet." However, if you have ordered the additional two modules, insert them now following the instructions below.

CAUTION: Make sure the power cord is unplugged and the power switch on the control unit is set to Off before you insert or remove any modules. You risk damage to the system and the modules if the power is on during this procedure.

Inserting a Line Module

Make sure that the power switch is off and that the system is unplugged from the power source. Then do as follows:

Be sure the top and front covers are off.

Locate the slot immediately to the right of the line module already installed. Notice the plastic channels at the top and bottom of the slots.

Align the top and bottom edges of the line module to the channel openings so that the gold connectors face in and the components face out and to the right of the slot.

FIGURE 11 Inserting a second line module.

Hold the module by the plastic knob and slide it into the slot. See

Figure 11. Slide the module in until the gold connectors insert fully into the port at

the back of the unit and the module snaps into place.

Check that the module is held in place by the safety catch at the bottom of the slot. It should fit snugly against the bottom front of the module.

CAUTION: You may need to exert mild force to insert the module; however, do not use excessive force. If you have difficulty, remove the module from the slot, align the module properly, and try again.

If you still have difficulty, check the module and the channel for damage. If you find any damage, such as broken pieces or plastic chips, contact your equipment supplier for assistance. If there is no damage, try one more time; the module should snap into place.

Step 1: Installing the Control Unit

Inserting a Voice Terminal Module

Make sure the power is off, the control unit is not plugged into the power

source, and the covers are off. Then locate the slot between the voice terminal module and the line module already in place. Align the edges and

install the voice terminal module using the same procedure you used for inserting the line module. Check to see that the module is securely in place.

See Figure 12 at (a).

When two line modules and two voice terminal modules are installed in this

system, the control unit is at full capacity as shown in Figure 12 at (b). As

designed, empty space remains to the left of the first voice terminal and to

the right of the second line module.

FIGURE 12 (a) Inserting a second voice terminal module; (b) control unit at full capacity.

Step 1: Installing the Control Unit

Once you have installed all modules, go on to the next procedure, "Connect

the Control Unit to the AC Outlet."

CONNECT THE CONTROL UNIT TO THE AC OUTLET

The ac outlet should be a 117-volt, 60-Hz, 3-prong, third-wire grounded outlet. You should have an electrician check the outlet’s third wire to make sure the outlet is properly grounded. Proper grounding helps protect the

system against damage from power surges caused by static discharges and lightning. See "Appendix C: Grounding Requirements" before connecting the control unit to the power source.

Once you are satisfied that the outlet is properly grounded, connect the control unit to the ac outlet as follows:

Make sure the power switch on the control unit is set to Off.

Plug one end of the power cord into the socket just below the power switch on the front of the control unit.

Thread the cord through the cable channel at the bottom of the control

unit.

Plug the other end of the cord into the ac outlet, allowing for a foot or so of slack.

Set the power switch on the control unit to On.

The green power light on the control unit goes on. The red warning light on the control unit blinks once, then goes off unless a malfunction occurs. The orange light on the power module goes on indicating that the outlet is properly wired and grounded. If the orange light is off when the green light is on, the outlet is not

functioning, or may be miswired or improperly grounded. Contact a qualified electrician

immediately.

See Figure 13.

FIGURE 13 The control unit attached to power source.

As soon as the unit is turned on, the red warning light should flash once, then remain off. Observe the lights on the control unit to determine its

condition before proceeding. If any of the conditions described in the following table exist, take the recommended steps to correct the situation.

Step 1: Installing the Control Unit

Then

The green power light doesn’t go on and the orange light on the power switch also doesn’t go on

The green power light is on, but the orange power switch light is off .

The green power light is off but

the orange power switch light is on and the outlet is working

properly

The red warning light continually flashes or remains lit

The red warning light continues to flash or remains lit

If the red warning light still continually flashes or remains lit

Test the outlet by plugging in a radio or a lamp.

The outlet is not functioning, is miswired or improperly grounded. Have it repaired or use another outlet.

Stop the installation. Turn off the control unit, unplug it from the ac outlet, and contact your equipment supplier for assistance.

Unplug the power cord and plug it in again.

Set the power switch to Off, and make sure that each module is seated firmly in its slot. Then set the power switch to On.

Stop the installation. Contact your equipment supplier for assistance.

When the unit is on and only the green power light and orange power switch light remain on, the control unit is working correctly. Before you connect any lines to the control unit, turn the power off.

CONNECT THE OUTSIDE

As shown on the label attached to the power module, control unit line jacks

LINES TO THE CONTROL are designated by the letters A through H. The A line jack is the second from UNIT

the top, B is third from the top, C is fourth, and so on. The topmost line

jack, the Auxiliary jack, is described under "Auxiliary Line Telephone" in this

manual. Connect the outside lines to the line jacks in an unbroken sequence. If you

start with A, for example, the next connection should be B, the next C, and so on. Although any outside line can be connected to any line jack, do not skip jacks once you have begun. If you start with B, the next connection should be C, followed by D, and so on. This simplifies future line administration.

Also, group special line types such as WATS lines together in the sequence, and place personal lines, if any, at the end of the sequence.

You need the following items to connect the control unit to the jacks for your outside lines, whether they appear at the jack field, or at the network interface.

●

A completed System Configuration Form (Figure 14)

●

A single-pair modular line cord for each outside line Use a 7-foot cord if the control unit is within 6 feet of the network

interface; use longer cords as required for greater distances. Only use one cord length; don’t use extensions.

Step 1: Installing the Control Unit

FIGURE 14 A System Configuration Form.

See Figure 15 and follow this procedure to connect your outside lines:

Refer to your System Configuration Form when connecting the outside

lines you’ve assigned to each line jack on the control unit. The outside line numbers are the telephone numbers listed at the network interface.

Mark or label a D2R cord on both ends with "A."

Plug one end of the line cord into the control unit jack labeled "A."

3 4

Plug the other end of the cord into the network interface or jack field that corresponds with the telephone number shown on your System

Configuration form.

Repeat steps 2 through 4 for lines B through H or until you have connected all your outside lines to the control unit.

CAUTION: Do not run cords inside or on top of air plenums or ducts, along hot pipes, or across walkways. If you use staples to attach the cords to a wall, be careful not to pierce the cords.

Step 1: Installing the Control Unit

FIGURE 15 The control unit connected to labeled outside lines.

NOTE: If you’re in an area with frequent lightning activity or severe

transient voltage and are using the 147A Protector (see CIB 3109), the outside lines from the control unit plug into corresponding jacks on the protector itself.

Step 1: Installing the Control Unit

Step 2: Wiring the Voice Terminals

PREPARATION CONSIDERATIONS

Before connecting the voice terminals to the control unit, keep your System Configuration Form handy and review the following:

Locations

The wiring run from the control unit to a voice terminal location cannot

●

exceed 1000 feet.

●

A voice terminal located in another building requires two Model 341 InRange, Out-of-Building (IROB) protectors. (See Section 5, "Reference," in the System Manual for more information on IROB protectors.)

Intercom Numbers

The intercom numbers for a MERLIN Plus system with 10 or fewer voice

●

terminals run from 10 to 19.

●

For a system with more than 10 voice terminals, the numbers run from 10 to 29.

●

These numbers correspond to the numbers on the voice terminal jacks on the control unit. For example, the voice terminal to which you’ve assigned intercom number 12 will be connected to the control unit through voice terminal jack number 12.

Intercom 10

By design, the intercom 10 position is the primary call-handling position in

●

the system. It is also the position used for system administration.

●

You should assign intercom number 10 to the attendant’s location.

●

The voice terminal you’ve assigned to the attendant’s location should be a 22-button (BIS-22) or 34-button (BIS-34D or BIS-34) model. (See Section 4, "Using the Attendant Console," in the System Manual for more information.)

Step 2: Wiring the Voice Terminals 19

Intercom 19 and Printed Reports

Printed reports require a MERLIN Plus System Data Collector and a

●

printer (AT&T 475 or equivalent).

●

The MERLIN Plus system is capable of printing for your use two kinds of reports. The Call Report (also known as the Station Message Detail Recording [SMDR]) prints records of outgoing and/or incoming calls.

System Feature Report (SFR) allows you to verify with a printout your administered systemwide features as well as the individual features programmed onto voice terminals. If your system will not have the Call Report option or if you do not plan to verify your system or voice terminal features, skip this section, go onto "Intercoms 11 through 29," and treat intercom number 19 just like any other intercom number available for assignment to a voice terminal.

●

If you will be printing Call Reports or System Feature Reports, you should know that the system automatically assigns intercom number 19 to the data collector and printer. But if you want to assign intercom number 19 to a voice terminal and assign another intercom number to the data collector and printer, you can do so.

●

A good alternate choice for the data collector and printer is the intercom number directly following the last intercom number you plan to assign to a voice terminal. For example, if you have 15 voice terminals, they will be assigned intercom numbers 10 through 24 (corresponding to voice terminal jacks 10 through 24 on the control unit). You would then connect the data collector and printer to voice terminal jack 25 on the control unit during system installation and assign intercom number 25 to the Call Report feature during system administration.

Intercoms 11 through 29

●

After you have assigned intercom number 10 to the system attendant’s location and another intercom number to the data collector and printer (if you are using them), assign intercom numbers to the voice terminals in the remaining locations in any order that makes sense to you. To simplify system administration, however, you should assign consecutive intercom numbers beginning with 11.

●

Each jack number of the control unit’s voice terminal module corresponds to the intercom number of the voice terminal to be plugged into it.

Step 2: Wiring the Voice Terminals

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