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MERLIN 206
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Lucent Technologies MERLIN 820, MERLIN 410, MERLIN 206 Service And Maintenance Manual

MERLIN
February 1985
Service and Maintenance Manual: Models 206, 410, and 820
518-600-012IS Comcode 103973152 Issue 1

Table of Contents

Page
Introduction Functional Overview Isolating and Correcting Troubles
A. Trouble on One Telephone
1. Ringing
2. Dialing
3. Hearing
4. Lights
5. Features
6. Accessories
7. Miscellaneous
B. Trouble on Several Telephones
1. Ringing
2. Dialing
3. Hearing
4. Lights
5. Features
6. Accessories
7. Entire System Down
8. Miscellaneous
1 3
21
A1-1 A2-1 A3-1 A4-1 A5-1 A6-1 A7-1
B1-1 B2-1 B3-1 B4-1 B5-1 B6-1 B7-1 B8-1
CIBs Index
NOTE:
Pages within the individual trouble sections are numbered in an unusual way to make this manual easy to update. In page number A1-4, for instance, the A indicates the section--"A. Trouble on One Telephone." The 1 indicates the first trouble category within that section--Ringing. The 4 indicates the fourth page of ringing symptoms.
Refer to the letters and numbers on the tab dividers for help in finding page numbers listed in the index.
i

Introduction

Even the magic of the MERLIN™ communications system sometimes fails. The problem may be a user error, installation problem, or faulty component. Usually you can correct the problem on the spot without returning any equipment for maintenance exchange.
The Service and Maintenance Manual: Models 206, 410, and 820 is intended for use by both the customer and the service technicians. This troubleshooting manual is divided into four parts:
Functional Overview describes each communications system component and its use.
●
●
Isolating and Correcting Troubles includes step-by-step procedures to help you isolate a problem to a user error or a specific component. Most procedures require no tools. A few procedures require a screwdriver or a basic Touch-Tone or rotary telephone (a Power Failure Transfer Telephone will work).
●
CIBs includes copies of customer instruction booklets shipped with the components. The CIBs describe the functional features and installation of each component.
●
Index lists problems, features, and components. It will help you find the information you need quickly.
1
2

Functional Overview

This section describes the components of the MERLIN communications system and explains how they fit together in a typical installation. Normally, MERLIN system installations will include most of the major components shown on page 4.
Additional equipment may be attached to the MERLIN system to provide expanded features and services. See pages 15 to 19 for information about optional voice terminal accessories and control unit accessories.
Further information on many of the components (including installation instructions) is available in the customer instruction booklets (CIBs) included under the CIB tab divider. The CIB number for each component appears near its illustration. When more than one CIB is listed, the appropriate title also appears.
3

MAJOR SYSTEM COMPONENTS

1.
Control unit: The control unit is the heart of the MERLIN system. It provides the power and intelligence for all voice terminals as well as the connection between voice terminals and outside lines. Program memory for the MERLIN system resides in the control unit. The model number of the control unit determines its capacity:
●
Model 206 control unit has a capacity of 2 outside lines and 6 voice terminals.
●
Model 410 control unit has a capacity of 4 outside lines and 10 voice terminals.
●
Model 820 control unit has a capacity of 8 outside lines and 20 voice terminals.
1
Control
unit
5
3
2
Voice
terminal
AC outlet
Network
interface
Jack field
4
Modular jack
System Overview
2.3.Network interface: The network interface connects the control unit and the outside lines. The two most common network interfaces are the one-line (RJ11) and two-line (RJ14) interfaces. However, other network interfaces may be used (see the Installation Guide: Models 206 and 410 and the Installation Guide: Model 820).
Jack field: The jack field provides the connections between the control unit and the wiring to the voice terminals. The jack field may consist of either jack panel boxes or modular jacks mounted near the control unit. (However, in some systems, the voice terminals plug directly into the control unit using modular voice terminal cords and extension cords.) Optional attachments (extra alerts, paging systems, etc.) may also connect to the control unit through the jack field.
4
4.
Modular jack: Each voice terminal wiring run from the jack field terminates in a modular jack at the voice terminal location. Every voice terminal has a separate modular jack.
5.
Voice terminal (MERLIN system telephone): The voice terminal provides basic telephone functions as well as access to the advanced feature software residing in the control unit.
MERLIN system voice terminals may be installed in a near-by building by using Outdoor Wiring Protection Units. Contact your equipment supplier for more information.
Basic Touch-Tone and rotary telephones may also be used as off-premises telephones with the MERLIN system using the optional Off-Premises Telephone Interface to connect them. In that case, off-premises telephones access system features by means of dial codes.
The following pages describe in detail the control units (by model), optional cartridges and line/voice terminal modules, voice terminals, and accessories.
5

CONTROL UNIT

The control unit provides power for most voice terminals and accessories. All outside lines and all voice terminals and telephones connect to the control unit, which contains the microprocessor and memory for all the advanced features available with the MERLIN communications system.
NOTE: Page 7 explains in greater detail the physical features of the Models 206 and 410 control units. Since they are the same except for the number of outside line jacks and the number of voice terminal jacks (Model 206 control unit has 2 outside line jacks and 6 voice terminal jacks; Model 410 has 4 outside line jacks and 10 voice terminal jacks), only Model 410 is pictured on page 7.

Model 206 Control Unit

Behind the removable front panel of the Model 206 control unit are 6 jacks for voice terminals labeled 0 through 5, and 2 jacks for outside lines labeled A and B. On the right side are horizontal slots for the three types of cartridges available to expand the MERLIN system’s capabilities.
Outside
line jacks
Cartridge slots
Voice
terminal jacks

Model 410 Control Unit

Behind the removable front panel of the Model 410 control unit are 10 jacks for voice terminals labeled 10 through 19, and 4 jacks for outside lines labeled A through D. The Model 410 control unit has horizontal slots on the right side for the three types of cartridges available to expand the MERLIN system’s capabilities.
Outside
line jacks
Cartridge slots
Voice
terminal jacks
6
Physical Features of the Model 206 and 410 Control Units (Model 410 is pictured)
2 3
Voice Terminals jacks: Jacks labeled 0 through 5 (Model 206) or 10 through 19 (Model
1.
4 5 6 7
410) accommodate MERLIN system voice terminals. Warning light (red): Comes on momentarily when the ac power cord is first plugged in.
2. If the warning light remains on, it can also indicate trouble.
Power light (green): Remains on to indicate that the ac cord is plugged in.
3. Option switches: For systems with standard features, set the switches labeled Ringing
4. to Yes to alert users of incoming calls or No so users are not alerted. With Feature Package 1, an Outward Calls label is placed over the Ringing label. In this case, the switches are set to Yes if the user can make outside calls, and to No if the user cannot. With Feature Package 2, an Admin/Normal-Toll Prefix/Area Code label is placed over the Ringing label. When the system is administered, the Admin/Normal switch is set to Admin. The Toll Prefix/Area Code switch sets the system to expect a prefix “1” or “0” before the area code on long-distance calls, or just the area code alone.
Tel. Co. Lines jacks: Jacks labeled A and B (Model 206) or A through D (Model 410)
5. provide connections for outside lines.
Tone/Pulse switch: Set to Tone for Touch-Tone service, and set to Pulse for rotary (dial
6. pulse) service.
8
91
Cartridge Type I slot: Accommodates feature packages that offer custom features (for
7. more information see page 10). Without a feature package the system has standard features, as described in the standard features user’s guide.
Cartridge Type II slot: Accommodates cartridges that provide the system with audio
8. options such as connections for Music-on-Hold and paging systems (for more information see page 11).
Cartridge Type III slot: Accommodates cartridges that give the system line-associated
9. options such as connections for Extra Alert Horns and Power Failure Transfer Telephones (for more information see page 12).
7

Model 820 Control Unit

Behind the removable front panel of the Model 820 control unit is one line/voice terminal module that accommodates 2 outside lines and 5 voice terminals. The Model 820 control unit can accommodate up to four line/voice terminal modules for a maximum of 8 outside line jacks and 20 voice terminal jacks (for more information on available types of modules, see page 12). Positions reserved for additional modules have protective plastic covers. Model 820 has three horizontal slots on the right side for the cartridges available to expand the MERLIN system’s capabilities.
Voice
terminal jacks
Cartridge slots
Outside
line jacks
Physical Features of the Model 820 Control Unit
10
9
8 7
6 5
4 3
2 1
11
12
13
14
15
16
8
1.
Tel. Co. Lines jacks: Jacks labeled A and B on the 2-Line/5-Voice Terminal Module shipped with the control unit provide connections for outside lines.
2.
Voice Terminals jacks: Jacks labeled 10 through 14 on the 2-Line/5-Voice Terminal Module shipped with the control unit provide connections for MERLIN system voice terminals.
3.
AC power cord connector
4.
On/Off power switch
5.
Auxiliary Power Unit connector: Connects Auxiliary Power Unit needed for systems with many accessories or 34-button deluxe voice terminals.
6.
Switch not used.
7.
Tone/Pulse switch: Set to Tone for Touch-Tone service, and set to Pulse for rotary service with standard features and Feature Package 1.
Toll Prefix/Area Code switch: This switch is not used with standard features, or
8. Feature Package 1. For Feature Package 2, set to Toll Prefix if long distance calls are made using the prefix “0” or “1,” otherwise, set to Area Code.
Admin/Normal switch: This switch is not used with standard features, or Feature
9. Package 1. With Feature Package 2, set to Admin whenever the control unit is customized or administered, and to Normal for normal operation. However, the switch can be set permanently to Admin without damage to the system. Setting it to Normal simply prevents accidental system changes.
10.
Warning light (red): Comes on momentarily when the ac power cord is first plugged in. If the warning light remains on, it can also indicate trouble.
11.
Power light (green): Remains on to indicate the ac cord is plugged in and the On/Off switch is set to On.
12.
2-Line/5-Voice Terminal Module: One module is shipped with control unit. It accommodates five voice terminals and two outside lines. Up to four modules can be used for a total of 8 lines and 20 voice terminals (for more information see page 12).
Additional modules: Positions reserved for additional line/voice terminal modules have
13. plastic covers. (Page 12 describes the three types of line/voice terminal modules that can be added.)
14.
Cartridge Type I slot: Accommodates feature packages that offer custom features (for more information see page 10). Without a feature package the system has standard features, as described in the standard features user’s guide.
15.
Cartridge Type II slot: Accommodates cartridges that provide the system with audio options such as connections for Music-on-Hold and paging systems (for more information see page 11).
Cartridge Type III slot: Accommodates cartridges that give the system line-associated
16. options such as connections for Extra Alert Horns and Power Failure Transfer Telephones (for more information see page 12).
9

TYPE I CARTRIDGES: FEATURE PACKAGES

A Type I cartridge occupies the top slot on the right side of the control unit. This cartridge contains all the programming for the custom features of the MERLIN system. (Without this cartridge, the system has standard features only.) The individual voice terminal has no memory or programming capabilities itself. A voice terminal, when connected to the MERLIN system, can be programmed to perform specific functions. However, the actual program instructions are stored in the cartridge, not in the voice terminal. The cartridge may come with a label that fits over the standard features or Ringing switches label. For example, Feature Package 1 (Models 206 and 410 only) comes with the label Outward Calls.
For more specific information regarding the features provided by Type I cartridges, refer to the administration manuals and user’s guides for Models 206, 410, and 820 that accompany the cartridges.
Feature Package
CIB 2869
10

TYPE II CARTRIDGES: AUDIO OPTIONS

A Type II cartridge provides connections for such features as Loudspeaker Paging, Background Music, and Music-on-Hold. It is installed in the second slot on the right side of the control unit.
Pictured below is the Music-on-Hold/Paging Cartridge. A Music-on-Hold Type II cartridge with only the Music-on-Hold feature is also available; this cartridge has only the M1 and M2 terminals and the Music-on-Hold volume control.
M1 and M2 terminals: Connect to a music source to provide Music­on-Hold and, if desired, background music on the paging system.
1 and 2 terminals: Connect to the paging system to signal when a page is in progress (for example, to
turn off the background music). T and R terminals: Connect to the
telephone input on your paging system. The connection allows users to access the paging system via the intercom from any voice terminal.
Paging Signal On/Off switch:
When set to On, a tone precedes all paging announcements. When set to Off, no tone precedes the paging announcement.
Background Music volume control: Used to adjust the volume
of background music. Turning it clockwise increases the volume and turning it counterclockwise decreases the volume.
Music-on-Hold volume control:
Used to adjust the volume of Music-on-Hold. Turning it clockwise increases the volume and turning it counterclockwise decreases the volume.
CIB 2870: Music-on-Hold Cartridge Type II
CIB 2871: Music-on-Hold/Paging Cartridge Type II
11

TYPE III CARTRIDGES: LINE-ASSOCIATED OPTIONS

A Type III cartridge provides line-associated options. It is installed in the third or last slot on the right side of the control unit. Pictured below is the Extra Alert/2-Line Power Transfer Type III cartridge.
Power Fail Lines jacks: Connect two basic Touch-Tone or rotary telephones for automatic backup service in the event of a commercial power failure.
Extra Alert jack: Connects a loud bell or horn for noisy or remote locations.
CIB 2872: Extra Alert/2-Line Power Failure Cartridge Type III

LINE/VOICE TERMINAL MODULES (Model 820 only)

The three types of modules that can expand the capacity of the Model 820 control unit are shown below. One 2-Line/5-Voice Terminal Module which has voice terminal jacks labeled 10 through 14 and outside line jacks labeled A and B comes with each Model 820 control unit. Up to four modules in any combination can occupy the vertical slots in the center of the control unit.
12
2-Line/5-Voice 2-Line Module: Terminal Module: Adds two outside Module: Adds five
Adds two outside lines and five voice terminals. terminals.
lines, but no voice
CIB 3002: 2-Line/5-Voice Terminal Expansion Module for Model 820
CIB 3012: 5-Voice Terminal Expansion Module for Model 820
CIB 3027: 2-Line Module for Model 820
5-Voice Terminal
voice terminals, but no outside lines.

OFF-PREMISES TELEPHONE INTERFACE TYPE C (Optional)

The Off-Premises Telephone Interface is optional. This unit connects off-premises telephones to the MERLIN communications system, making the advanced features available to the off­premises user. The unit can be mounted on the wall or placed near the control unit. Power is supplied directly through the voice terminal module jack connection described below. There must be a Type I cartridge in the control unit for this interface to operate.
To Voice Terminal Module jack:
Connection via a 4-pair cord is made from this jack to a voice terminal jack in the control unit. The intercom number of the off­premises telephone is determined by the voice terminal jack to which this unit is connected:
Off-Premises Line Input jack:
Off-premises outside line connects via 2-pair wire directly to this input.
Power light: Remains on when power is on.
CIB 3009
13

VOICE TERMINALS

Several types of voice terminals may be connected to Models 206, 410, and 820. They are distinguished from one another by the number of silver membrane buttons above and to the right of the dial pad. These buttons give access to lines and features; most buttons are programmable. The operation of each voice terminal can be customized by programming different features to these buttons. (The individual voice terminal has no memory or programming capabilities by itself, however. Actual program instructions are stored in the Type I cartridge of the control unit.) Refer to the administration manual and user’s guides for Models 206, 410, and 820 for more information about individual voice terminals if you have a Type I cartridge. The illustration below shows examples of available voice terminals.
5-Button Voice Terminal
34-Button Voice Terminal
10-Button Voice Terminal
34-Button Deluxe Voice Terminal
14

OPTIONAL EQUIPMENT

In addition to the essential components of the MERLIN communications system, several different accessories may be connected to voice terminals or the control unit.

Optional Voice Terminal Accessories

Hands-Free Units, Headset Adapters, and Manual Multipurpose Adapters can be connected directly to the underside of the voice terminal as illustrated below. An externally connected Voice Terminal Power Supply can also be added.
Line jack: Connects to control unit via modular voice terminal cord. This jack is not to be used for voice terminal accessories.
“Other” jack: Connects to optional voice terminal accessories described in this section via a special voice terminal accessory cord (blue tips). This jack is usually covered by an adhesive­backed paper label.
Hands-Free Unit (HFU)
The Hands-Free Unit provides speakerphone capability; making it possible to place and receive outside and intercom calls without using the voice terminal handset. The HFU, shown below, can be used with 10-button or 34-button voice terminals.
Voice terminal accessory cord:
Connects to “Other” jack on voice terminal.
Speakerphone light: Lights when speakerphone is in use.
Speakerphone switch: Turns unit on and off.
Microphone light: Goes on when microphone is in use.
Volume control Microphone switch: Turns
microphone on and off for “mute” function.
CIB 2864
15
Headset Adapter
The Headset Adapter makes it possible to use a headset with a 10-button or 34-button voice terminal.
Headset light: Goes on when headset is in use.
On/Quiet switch: Turns adapter sound on; when held down, provides “mute” function.
Off switch: Turns adapter sound off.
Jack: Connects headset equipped with 2-prong plug.
Front and Top
Jack: Connects voice terminal
accessory cord to “Other” jack on voice terminal.
Jack: Connects headset equipped with modular plug.
Back
CIB 2867
Voice Terminal Power Supply (Model 820 only)
A Voice Terminal Power Supply provides extra power to 34-button deluxe voice terminals and attendant consoles. The power supply plugs into an ac outlet not controlled by a switch. A cord (included with the power supply) connects it to one jack of a 2-jack adapter (also included). The modular terminal cord from the voice terminal plugs into the other jack on the adapter. The adapter has a plug end that connects to a modular jack mounted near the voice terminal.
Plug: Connects to ac outlet. Output jack: Connects cord to
Z400F Adapter.
16
CIB 3007
Manual Multipurpose Adapter
The Manual Multipurpose Adapter (illustrated below) permits these devices to be connected to a voice terminal:
●
Modems and data terminals with built-in modems. (An extra telephone is not needed with an AT&T 212A-type modem with a special cable. Automatic answering modems cannot be used.)
●
Basic Touch-Tone or rotary telephones.
●
Speakerphones and conference phones.
●
Touch-Tone automatic dialers.
●
Cordless telephones.
●
Facsimile machines.
Voice light: Goes on when modular connector on back is active.
Voice switch: Pressed to access devices attached through the modular jack on the back.
Data switch: Pressed to access the 212A-type modem connector on the back; deactivates the modular jack on the back.
Data light: Goes on when 212A­type modem connector is active.
Top
2-pair modular jack: Connects
the devices listed above. 25-pair connector: Connects
212A-type modems. Jack: Connects cord to the
“Other” jack on the voice terminal.
Back
CIB 3008
17

Control Unit Accessories

Some optional accessories connect directly to the control unit to give the MERLIN system additional capabilities.
Extra Alerts
Extra alerts such as horns and bells provide signaling in large, open areas (for example, warehouses and parking lots) and especially noisy environments. Extra alerts connect either directly to the Services Module on the control unit or by the Extra Alert Switch.
Extra Alert Horn: Provides a loud signal in noisy environments where a unique, non-bell sound must be heard over a large area. It can be used indoors or out.
Extra Alert Bell: Alerts people that a telephone is ringing by providing a loud signal in remote or noisy areas. It can be used
indoors or out.
Extra Alert Switch: Connects two extra alerts. Turns alert signals on and off (if an alerting device is connected to only one jack) and selects between alternate signals, for example an alert strobe during business hours and an alert horn at night (if alerting devices are connected to both device jacks). A Line Bridging Adapter inserted into either device jack permits connection of a second alerting device to that device jack.
Jack: Connects to Services Module of control unit.
Select switch
Device 1 jack
Device 2 jack
18
Auxiliary Power Unit (Model 820 only)
The Auxiliary Power Unit connects to the Model 820 control unit to provide the extra power necessary in systems with many accessories or 34-button deluxe voice terminals. Follow these steps to see if the system requires an Auxiliary Power Unit.
1.
Count how many voice terminals are connected to the control unit. Do not count 34­button deluxe voice terminals or voice terminals that have a Voice Terminal Power supply.
2.
Count how many accessories (such as Hands-Free Units) and 34-button deluxe voice terminals are connected to the control unit and add the two numbers together. Do not count voice terminals that have a Voice Terminal Power Supply.
3.
Add numbers from steps 1 and 2. If the total exceeds 28, an Auxiliary Power Unit is recommended. If the problem occurs only at 34-button deluxe voice terminals, adding Voice Terminal Power Supplies at those voice terminals instead of an Auxiliary Power Unit is recommended.
Aux Power light: Goes on when the Auxiliary Power Unit is connected to the Power Module of the control unit.
Aux Power jack: Connects via dc cord (supplied) to the Auxiliary Power jack on the Power Module of the control unit.
AC Output jack: Connects the ac power cord from the control unit.
AC Input connector: Connects power cord to an ac outlet.
19
20
TROUBLE ON ONE TELEPHONE Ringing Symptoms
A line rings but no caller is on the line 10-button voice terminals exhibit peculiar ringing and/or extra lights are lit Voice terminal rings constantly, whether on or off hook Voice terminal does not ring when a call is transferred to it Off-premises telephone rings after user hangs up Voice terminal does not ring on incoming outside calls
NOTE:
Use this section only if you have isolated the problem to one voice terminal or telephone (in other words, it is not a systemwide problem).
A1-3 A1-3
A1-4 A1-5 A1-5 A1-6
A1-1
A1-2
TROUBLE ON ONE TELEPHONE
Ringing
Symptom:
A line rings but no caller is on the line. (The user attempts to answer a call but loses it and receives dial tone on a different line.)
Possible Cause
User rocked the handset while lifting it.
Recommended Action
Rocking the handset causes the voice terminal to go off hook, on hook, then off hook again. Instruct the user to lift the handset without rocking it to either side.
Symptom:
10-button voice terminals exhibit peculiar ringing and/or extra lights are lit.
Possible Cause
A brief ac power outage occurred.
Recommended Action
A brief ac power outage causes certain early production 10-button voice terminals to exhibit peculiar ringing. Extra lights also may be on. Momentarily removing ac power from the voice terminal corrects the problem. Do this by unplugging the voice terminal cord at the modular jack and plugging it in again.
A1-3
TROUBLE ON ONE TELEPHONE Ringing
Symptom: Voice terminal rings constantly, whether on or off hook.
Possible Cause
Voice terminal T/P switch is not
1. in center position.
2. Voice terminal is defective.
Recommended Action
Make sure the T/P switch is in the center
1. position.
2. When the ringing occurs only on incoming calls and continues even when the user picks up the handset, the switchhook may be sticking. If it is, replace the voice terminal.
A1-4
TROUBLE ON ONE TELEPHONE
Ringing
Symptom:
Voice terminal does not ring when a call is transferred to it. (The Transfer feature is available only if the system has a feature cartridge.)
Possible Cause
Do Not Disturb feature is activated.
Recommended Action
If the green light is on by a Do Not Disturb button, touch the button to deactivate the feature.
Do Not Disturb may be programmed on a button without lights beside it, a mislabeled button, or an unlabeled button. To make sure Do Not Disturb is deactivated in these cases, program the feature on a button with lights. This removes the feature from its previous position.
Symptom:
Off-premises telephone rings after user hangs up.
Possible Cause
The user may accidentally have put the call on hold by briefly depressing the switchhook or rocking the handset.
Recommended Action
Advise the user to depress the switchhook firmly or replace the handset when disconnecting a call.
A1-5
TROUBLE ON ONE TELEPHONE Ringing
Symptom: Voice terminal does not ring on incoming outside calls on one or more lines
Possible Cause
1. Volume control setting is too low.
2. User programming of line ringing options is incorrect (applies only if the system has a feature cartridge).
Recommended Action
1.
Slide volume control to a higher position and test by making a call to one of the user’s outside lines from another voice terminal.
2.
See if voice terminal is programmed for “no ring.”
Slide T/P switch to P (program) position.
a.
Check red light associated with the line
b.
that doesn’t ring. The red light indicates how the line is programmed for ringing:
On = ringing
Flashing = delayed ring
Off = no ring
If the red light is off, the line is programmed for “no ring.” Change it by touching the line button until the light is on or flashing.
Slide T/P switch to center position.
c.
A1-6
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