Merlin 3070, 1030 Maintance Manual

TM

MERLIN

COMMUNICATIONS SYSTEM

SERVICE AND MAINTENANCE MANUAL:
MODELS 1030 AND 3070

Table of Contents

Page

Introduction
Functional Overview 3
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

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

1

Diagnostics Module
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—
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.

“A. Trouble on One Telephone.”

The 1 indicates the first trouble category

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 1030 and 3070 is intended for use by both the
customer and services technician. This troubleshooting manual is divided into five 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).

CIB 3018: Diagnostics Module describes how to use the optional Diagnostics Module.

●

●

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.
the major components shown on page 5.

Additional equipment may be attached to the MERLIN communications system to provide
expanded features and services.
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 is noted near its illustration in this section.

See pages 14 to 18 for information about optional voice

Every MERLIN system installation will include

3

BASIC CONFIGURATION

A.

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.

Model 1030 is the basic control
unit (the lower half of the unit
illustrated) and has a capacity of
10 lines and 30 voice terminals or
telephones. Model 3070, with the
expansion unit mounted above
the basic control unit as
illustrated, has a capacity of 30
lines and 70 voice terminals or
telephones.

B.

Network interface: The network
interface connects the control unit
and the outside lines. The most
common network interface is the
25-pair amphenol connector
(RJ21) illustrated. However, the
network interface may be
different (see the Installation

Guide: Models 1030 and 3070).

C.

Jack field: The jack field connects the control unit and modular jacks for the voice
terminals. Optional attachments (extra alerts, paging systems, etc.) may also connect to
the control unit through the jack field.

D.

Modular jack: Each voice terminal wiring run from the jack field terminates in a modular
jack. Every voice terminal has a separate modular jack.

E.

Voice terminal: The voice terminal provides not only basic telephone functions, but also
access, usually by programmable buttons, to the advanced feature software residing in
the control unit. Basic Touch-Tone and rotary-dial telephones may also be used with the
MERLIN system. These telephones access system features by means of dial codes.

4

CONTROL UNIT

The control unit provides power for all voice terminals and most accessories. All outside lines

and all voice terminals and telephones connect to the control unit, which contains the

microprocessor and modules for all the advanced features available with the MERLIN system.

Model 1030 consists of a basic control unit (A). Behind the removable front panel (B) of the
control unit, the modules (C) are arranged vertically across the width of the unit. Each vertical
position serves the particular function defined on the colored band on the base (D). Tabs (E)

on the individual modules are color-coded to the appropriate positions. Module positions in

the basic control unit are numbered on the colored band (from left to right) I through I5.

Positions reserved for optional features and services may be vacant and will have protective

plastic covers.

In Model 3070, an expansion unit (F) is mounted on top of the control unit. Additional
modules, located behind the removable front panel of the expansion unit, increase the

capacity of the system to up to 30 lines and 70 voice terminals or telephones. Module
positions in the expansion unit are numbered 16 through 28. Wiring connecting the two units

runs inside the cabinets behind the modules.
Modules are electrically connected to the control unit via pins located at the rear of the module

slots. Abrupt insertion or removal of modules may cause pins to bend, triggering problems

within the control unit. (For any problem common to several voice terminals, it is advisable to

examine the pins.)

5

POWER MODULE

The Power Module, color-coded red, occupies position 1 and supplies power to the entire
Model 1030 control unit. In Model 3070, a second Power Module in position 16 of the
expansion unit supplies power for lines CO through C4 and D0 through D4 and intercoms 40
through 69. (The Line Module description on page 12 explains how line designations are
determined; the Voice Terminal Module description on page 13 explains how intercom
designations are determined.) In systems with more than 20 lines or more than 60 voice
terminals or telephones, a Supplementary Power Module occupies position 27 in the
expansion unit and supplies power to lines E0 through E4, lines F0 through F4, and intercoms
70 through 79.

Circuit Breakers: Provide
current surge protection for the
control unit.

Ring Gen. jack: Provides
connection for Ring Generator
Unit needed for basic
telephones.

Auxiliary Power jacks:

Provide connections for
Auxiliary Power Units needed
for systems with many
accessories or 34-button
deluxe voice terminals.

Power receptacle: Provides
connection for ac power cord
plug.

Power light (green): Goes on
when power is on.

On/Off switch: Turns ac
power on and off; resets
control unit when switches on
Processor Module are
changed.

6

PROCESSOR MODULE

The Processor Module, color-coded violet, occupies position 2. This module contains the
microprocessor which runs all the programs stored in the Feature Module (see page 8) of the

MERLIN

system.

Switches A through H: Each switch on
the Processor Module aligns with a label
on the Feature Module in position 3 when
both modules are in place. The function of
each switch is indicated by the
corresponding label on the Feature
Module. (Refer to the Administration
Manual: Models 1030 and 3070 associated
with the Feature Module for specific

information about the switches.)

Warning light (red): When power is
turned on, the warning light goes on briefly
(while the module runs certain internal
diagnostics) and then goes out. It remains
on if there is a problem with the control

unit, for example, if a module is not

completely plugged in. It goes on again if
a problem occurs while the system is

running.

7

FEATURE MODULE

Feature Module 1, color-coded orange, occupies position 3. Feature Module 1 is the first in a
series. This module contains all programs for the MERLIN system features on ROM (read­only memory) chips. The individual voice terminal has no memory or programming capabilities
in itself. A voice terminal, when connected to the MERLIN system, can be programmed to
perform specific functions (for example, automatic dialing of home number). However, the
actual program instructions are stored in the Feature Module, not in the voice terminal. The
system will not operate without a Feature Module in position 3.

Labels on the Feature Module indicate the
functions of the corresponding switches on
the Processor Module in position 2.
Numbers on the top five positions are
intercom designations (see Voice Terminal
Module description, page 13, for
discussion on how intercom designations
are determined).

Refer to the Administration Manual:
Models 1030 and 3070 for specific
information about the switch definitions on
Feature Module 1.

8

DIAGNOSTICS MODULE (OPTIONAL)

The Diagnostics Module, an optional module color-coded orange, occupies position 4. (When
the Diagnostics Module is not used, a plastic cover protects position 4.) The Diagnostics
Module permits testing of memory and individual Line, Voice Terminal, and Basic Telephone
Modules.

EIA RS-232c jack: Permits connection of a
data terminal for more detailed testing.
This jack is covered with a plastic tab if a
data terminal is not used.

4-character alphanumeric display:

Provides diagnostic messages during
testing.

Normal/Test switch: Permits normal call
processing when set to Normal; permits
diagnostic testing when set to Test.

Next pushbutton: Pressed to resume
testing when diagnostics are interrupted by
a problem.

Detail pushbutton: Pressed to request
further information when *
character display area, signaling detection
of a problem.

See CIB 3018: Diagnostics Module under
the Diagnostics tab divider for further
information about the Diagnostics Module.

appears in the

MODULE A

Position 5, color-coded gold, is reserved for future use. At present a plastic cover
protects this position.

9

SERVICES MODULE TYPE B (OPTIONAL)

The Services Module (Type B), an optional module color-coded yellow, occupies position 6.
When a Type B module is not used, a plastic cover protects position 6. The Services Module
provides connections for auxiliary equipment: single- and multizone paging systems, music
sources, extra alerts, and Power Failure Transfer Telephones.

PFTT jack: Provides connection for up to
four backup basic Touch-Tone or rotary
telephones (Power Failure Transfer
Telephones). Service will automatically
switch over to these telephones if power to
the control unit is interrupted. When
power is restored, service will automatically
switch back to the control unit. A single
telephone plugged into the module
connects with line A0. When connected
through a 4-Way Modjack Adapter, four
phones will access lines A0, A1, B0, and
B1. (See Line Module description, page
12, for information on line designations.)

Extra Alert jacks: Provide connections for
three separately controllable extra alerts
(horns, bells, chimes, strobes, etc.).

Page jack: Provides connections for a
single- or multizone paging system.

Music In jack: Provides a music source
connection for Music-on-Hold and
Background Music features.

MOH Vol screw: Controls the volume for
Music-on-Hold.

Bkgd Vol screw: Controls the volume for
Background Music.

Tone switch: Turns paging signal on and
off (1 = on, 0 = off).

Level switch: Sets impedance level for
music source.

10

CIB 3016

LINE MODULE

The Line Module, color-coded green, occupies position 7. Additional Line Modules (up to five)
can occupy position 8 in the control unit and positions 17, 18, 19, and 20 in the expansion
unit. Line Module positions are labeled on the colored bands on the control unit and the
expansion unit with the letters A through F in addition to position numbers 7, 8, 17, 18, 19,
and 20. Each Line Module provides connections for five outside lines via modular jacks
labeled 0 through 4. Both the module and the jack to which a line connects determine the line
designation: The designation is the letter label of the module position plus the number of the
jack on that module to which the line connects. For example, the line plugged into the third
jack on the module in position 8 (labeled Lines B0 to B4) is designated B2.

Jacks numbered 0 through 4 provide
connection to outside lines.

CIB 3014

11

VOICE TERMINAL MODULE

The Voice Terminal Module, color-coded blue, occupies position 9 (labeled Intercoms 10 to

19). Up to six additional Voice Terminal Modules can occupy positions 10 and 11 in the
Model 1030 control unit, and positions 21, 22, 23, and 24 in the expansion unit. The seven
Voice Terminal Module positions are labeled on the colored bands
on the control unit and the expansion unit with intercom
designations (Intercom 10 to 19, Intercom 20 to 29, etc., through
Intercom 70 to 79) in addition to position numbers 9, 10, 11, 21,
22, 23, and 24. Each Voice Terminal Module provides connections
for 10 voice terminals via 4-pair modular jacks (only jacks 0 and 5
are numbered). Both the module position and the jack number
determine the intercom number for each voice terminal. For
example, the voice terminal connected to the third jack from the
top in position 11 (labeled Intercoms 30 to 39) is number 32.

CIB 3013

BASIC TELEPHONE MODULE (OPTIONAL)

Basic Telephone Modules are interchangeable with Voice Terminal Modules and occupy the
same positions (except for position 9). These modules allow for connection of basic Touch­Tone and rotary telephones to the MERLIN system via modular jacks. Advanced features are
available through dial-access codes (see User’s Guide for Basic Touch-Tone and Rotary
Telephones). A Ring Generator Unit must be connected to the Power Module to provide
ringing current to the telephones connected to the Basic Telephone Module.

CIB 3040

12

OFF-PREMISES TELEPHONE INTERFACE TYPE C (OPTIONAL)

The Off-Premises Telephone Interface, an optional module color-coded gray, may occupy
position 12, 13, or 14 on the Model 1030 control unit or position 25 or 26 on the expansion
unit. This module connects off-premises telephones to the MERLIN communications system,
making the advanced features available to the off-premises user. Unlike the other modules,
this module has no electrical connections to the backplane of the control unit; power is
supplied directly through the top jack connection.

To Voice Terminal Module jack:

Connection via a 4-pair cord is made from
this jack to an open jack on a Voice
Terminal Module. The jack to which this

module is connected determines the
intercom number of the off-premises
telephone. Connecting a 4-pair cord from
this jack to jack 8 on the Voice Terminal
Module in position 9, for example, will
mean the off-premises phone will be
intercom 17.

Off-Premises Line Input jack: Off­premises outside line connects via 2-pair
wire directly to this input.

Power light (green): Goes on when
power is on.

CIB 3009

13

VOICE TERMINALS

Several types of voice terminals may be connected to Model 1030/3070. The different types of
voice terminals are distinguished from each other 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.
stored in the Feature Module of the control unit.) Refer to the Administration Manual:
Models 1030 and 3070 or the User’s Guide: Models 1030 and 3070 for more information about
voice terminal operation.

Examples of available voice terminals are illustrated below.

Actual program instructions are

5-Button Voice Terminal

34-Button Voice Terminal

10-Button Voice Terminal

34-Button Deluxe Voice Terminal

BASIC TOUCH-TONE/ROTARY TELEPHONE

MERLIN system features are also available using dial-access codes and a Touch-Tone or
rotary telephone (see User’s Guide for Basic Touch-Tone and Rotary Telephones). Basic
telephones are also used for off-premises and power failure backup service. Basic telephones
may connect to the control unit through the Basic Telephone Module, the Off-Premises
Telephone Interface, and the PFTT jack on the Services Module.

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 Multipurpose Adapters can be connected directly to
the underside of the voice terminal, illustrated below. A Voice Terminal Power Supply can
also be connected to a voice terminal and an ac outlet.

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
via voice terminal accessory cord.
This jack is usually covered by an
adhesive-backed 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: Provides connection for
headset equipped with 2-prong
plug.

Front

Jack: Provides connection by a
voice terminal accessory cord to

the “Other” jack on the voice
terminal.

Jack: Provides connection for
headset equipped with modular
plug.

Back

CIB 2867

Voice Terminal Power Supply

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: Provides connection

for cord to Z400F Adapter.

16

CIB 3007

Multipurpose Adapters

The Manual Multipurpose Adapter (illustrated below)

permits these devices to be connected to

a voice terminal:

Modems and data terminals with builtin modems.

●

an AT&T 212A-type modem with a special cable.

(An extra telephone is not needed with

Automatic answering modems cannot be

used.)
Basic Touch-Tone or rotary telephones. (These telephones will not ring for incoming calls.

●

Calls cannot be dialed out on rotary telephones.)

●

Speakerphones and conference phones.
Touch-Tone automatic dialers.

●

Cordless telephones. (Cordless telephones will not ring for incoming calls. Calls cannot

●

be dialed out on cordless rotary telephones.)
Facsimile machines.

●

The Automatic Multipurpose Adapter, very similar in appearance to the Manual Multipurpose
Adapter, can be differentiated by the word AUTO on the front surface. It permits the same
attachments as the manual adapter and also allows for connection of an answering machine
or automatic answering modem to a voice terminal.

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.

Front

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

Attendant Intercom Selector

The Attendant Intercom Selector can be attached to a 34-button deluxe voice terminal. The
selector’s 30 buttons can be used to access up to 70 Intercom Auto Dial numbers. The light
beside each button indicates whether a voice terminal or basic telephone is busy and whether

its message light is on (voice terminals only).

CIB 3026

Optional Control Unit Accessories

Some optional accessories connect directly to the control unit to give the MERLIN system
additional capabilities.

Ring Generator Unit

The Ring Generator Unit must be connected to the Power Module on the control unit to
provide ringing current when basic Touch-Tone or rotary telephones are connected to a Basic
Telephone Module. The Ring Generator Unit looks similar to the Auxiliary Power Unit
illustrated on page 19. However, the Ring Generator Unit has, in place of the Aux Power jack,
a permanent cord with a plug that connects to the Ring Gen. jack on the Power Module.

CIB 3019

18

Auxiliary Power Unit

The Auxiliary Power Unit connects to the
unit in systems with many accessories or

Power Module to provide extra power to the control
34-button deluxe voice terminals.

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.

The graph below indicates when an Auxiliary Power Unit is necessary.

100

Total number of

5-, 10-, & 34-button

voice terminals,

and Hands-Free Units

Control unit power
supply is sufficient

80

60

40

20

10

One Auxiliary Power Unit
is necessary

20

Total number of 34-button

deluxe voice terminals

30

Two Auxiliary Power Units
are necessary

40

50

19

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.

20

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

Isolating and Correcting Troubles

To isolate and correct a trouble:

FIRST: Determine if more than one voice terminal or basic Touch-Tone or rotary
telephone is experiencing the trouble.

SECOND: If the trouble appears on only one voice terminal or telephone, find the
symptom in the list below titled “A. Trouble on One Telephone.” The list includes
examples of problems categorized under each symptom. Turn to the tab divider for the
symptom and follow the procedures for your specific problem.

If the same problem appears on all or most telephones, find the
“B. Trouble on Several Telephones.” Turn to the tab divider for
the procedures for your specific problem.

For any problem common to several voice terminals or telephones, check for bent or
broken pins on the control unit backplane.
equipment supplier. Never reinsert a module in a slot with bent pins.

Refer to the functional overview or CIBs in this manual if you need more detail on any
component. For more information on programming voice terminals, refer to the User’s Guide:
Models 1030 and 3070 and Administration Manual: Models 1030 and 3070 that come with the
Feature Module.

The index will also help you find information on specific problems. If you cannot find your
problem in the symptom list or index, contact your equipment supplier.

TROUBLE ON ONE TELEPHONE

A.

If any pins are damaged, contact your

symptom in the list titled
the symptom and follow

Symptoms

1.

Ringing (no ringing, constant ringing, etc.)
Dialing (no dial tone, trouble with Auto Dial buttons, etc.)

2.
Hearing (user or outside caller cannot hear, etc.)

3.
Lights (voice terminal has no lights or lights behave in peculiar ways)

4.
Features (problems with holding calls, transferring calls, etc.)

5.
Accessories (problems with Hands-Free Units)

6.
Miscellaneous (voice terminal or accessory suddenly fails, etc.).

7.

B.

TROUBLE ON SEVERAL TELEPHONES

Symptoms

Ringing (no ringing on a particular outside line, peculiar ringing, etc.)

1.

2.

Dialing (cannot dial out on one or more outside lines, no dial tone, etc.)
Hearing (cannot hear outside party clearly, etc.)

3.
Lights (dim lights, etc.)

4.

5.

Features (problems with transferring calls, holding calls, programming buttons, etc.)

21

6.

Accessories (problems with music, paging, etc.)
Entire System Down (no lights on control unit and no voice terminals operative)

7.
Miscellaneous (dropped calls, etc.).

8.

NOTE:

Pages within the individual trouble sections are numbered in an unusual way to make
this manual easy to update.
section—
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.

“A. Trouble on One Telephone.”

In page number A1-4, for instance, the A indicates the

The 1 indicates the first trouble category

22

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
Voice terminal does not ring on incoming outside calls

Voice terminal rings but none of the lights beside the line buttons are lit

Off-premises telephone rings after user hangs up
A particular outside line does not ring

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
A1-6

A1-8
A1-8

A1-9

A1-1

A1-2

Symptom:

TROUBLE ON ONE TELEPHONE

Ringing

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 will correct 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

1. Make sure the T/P switch is in the center
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.

Possible Cause

The call is being transferred to

1.
a line not available to the user
or not shown on the user’s line
buttons.

Do Not Disturb feature is

2.
activated.

Recommended Action

1.

If the user does not have the line or line
button, the person answering the call should
transfer it by touching Conference instead of

Transfer. See the User’s Guide: Models
1030 and 3070 for steps to establish an

outside/intercom conference.

If the green light is on next to a Do Not

2.
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. Follow these
steps to see if the feature is programmed and
activated:

Enter program mode by sliding the T/P

a.

switch to the P position.
Touch Intercom Ring.

b.

Dial *71 from the dial pad.

c.
d.

Look at the lights beside Intercom Ring.
Their status (on or off) means the
following:

RED

GREEN

Feature is not programmed

Off

On

On

To change the Status of Do Not Disturb,

e.

Off

Off

or activated.

Feature is programmed but
not activated.

Feature is programmed and
activated.

On

touch Intercom Ring until the desired
pattern of lights appears.

Or, program Do Not Disturb on a button
with lights (strongly recommended). This

will remove the feature from its present
position.

Touch the button to deactivate
the feature in its new position. Relabel
buttons accordingly.

f.

Slide the T/P switch to the center
position.

A1-5

TROUBLE ON ONE TELEPHONE
Ringing

Symptom:

Voice terminal does not ring on incoming outside calls.

Possible Cause

Volume control setting is too

1.
low.

2.

User programming of line
ringing options is incorrect.

Recommended Action

Slide volume control to a higher position and

1.
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