Comdial ExecuTech XE Sys IS Service Manual

ISO 9001 Certified

R

XE Key System

System Manual

The information in this publication is applicable
for the following common equipment:
Model
N0308 Rev J and later
N0308-AT Rev J and later
N0616 Rev J and later
N0616-AT Rev J and later
N0820 Rev M and later

Printed in U.S.A. IMI66–064.04

N0820-AT Rev M and later

Manufacturing Code

7/91

Comdial®strives to design the features in our communications systems to be fully
interactive with one another. However, this is not always possible, as the
combinations of accessories and features are too varied and extensive to insure total
feature compatibility.

Accordingly, some features identified in this publication will not operate if some
other feature is activated. Comdial disclaims all liability relating to feature
non-compatibility or associated in any way with problems which may be
encountered by incompatible features. Notwithstanding anything contained in this
publication to the contrary, Comdial makes no representation herein as to the
compatibility of features.

Issued: 2/12/97

Table of Contents IMI 66-064

iii

Table of Contents IMI 66-064

iv

IMI 66-064 Table of Contents

v

This page remains blank intentionally.

System Description IMI 66-064

CHAPTER 1

SYSTEM DESCRIPTION

SECTION 1

INTRODUCTION

MANUAL SCOPE

This publication contains a complete description of the
ExecuTech model XE electronic key system. The
manual is divided into:

System Description

•

Feature Description

•

Installation

•

System Programming

•

System Operation

•

Maintenance

•

This issue of publication IMI 66-064 supersedes all
previous issues and includes information previously
discussed in the following Technical Advisory Bulletins:

TAB036A - Software Enhancements

N0308 Revision C and later
N0616 Revision C and later
N0820 Revision D and later
N1024 Revision D and later

Automatic dialing with DSS/BLF consoles

•

OHVA and DSS/BLF with DB32S-xx adjunct feature

•

module
OHVA signaling enhancements

•

Unscreened call transfer

•

Extended DTMF tones

•

Idle line preference through an OPX port

•

Auto-save feature

•

TAB047 - Programming Clarifications

All models, all revisions

Expanded explanation of line assignment and button

•

mapping

TAB048A- Software Enhancements

N0308 Revision H and later
N0616 Revision H and later
N0820 Revision K and later
N1024 Revision K and later

System speed dial toll restriction override

•

SOHVA groups

•

TAB059A-Software Enhancement

N0308 REV J and later Software Issue 8
N0308-AT REV J and later Software Issue 8
N0616 REV J and later Software Issue 8
N0616-AT REV J and later Software Issue 8
N0820 REV M and later Software Issue 11
N0820-AT REV M and later Software Issue 11
N1024 REV M and later Software Issue 11
N1024-AT REV M and later Software Issue 11
K0308 REV J and later Software Issue 8
K0616 REV J and later Software Issue 8
K0820 REV M and later Software Issue 11
K1024 REV M and later Software Issue 11
Product codes for software upgrade kits:

PSUXE-1 REV 8

NO308, N0308-AT, NO616, N0616-AT, K0308, K0616

PSUXE-2 REV 11

NO820, N0820-AT, N1024, N1024-AT, K0820, K1024

Programmable Feed-Back Tone

•

RELATED PUBLICATIONS

Related publications, which contain additional
information applicable to this electronic key system, are
available from the manufacturer.

They are as follows:
GENERAL INFORMATION

IMI 01-001 Compliance Requirements To FCC Rules

•

and Regulations Part 68 and 15
IMI 01-005 Handling Of Electrostatically Sensitive

•

Components

USER INFORMATION

GCA 70-110 Attendant Guide

•

GCA 70-111 Station User Guide

•

INSTALLER INFORMATION

IMI 66-065 Class Of Service Programming Chart

•

1-1

IMI 66-064 System Description

SECTION 2

SYSTEM SPECIFICATIONS

SPECIFICATION MODEL NUMBER

SYSTEM CAPACITY N0308 N0616 N0820 N1024

LINES: 3 6 8 10\\
STATIONS: 8 16 20 24
DSS/BLF CONSOLES: 4 8 20 24
INTERCOM PATHS: 1 3 3 2
MAXIMUM SIMULTANEOUS
INTERCOM CONVERSATIONS: 1 3 3 2

POWER REQUIREMENTS

(Fullly loaded system)

AC POWER: 117V +/- Singlephase - all models

.4A .5A .8A. .8A
25W 45W 65W 65W
40VA 60VA 80VA 80VA

DIMENSIONS (approximate)

COMMON EQUIPMENT:

WIDTH (inches): 10.4 13.1 15.6 15.6
HEIGHT (inches): 14.9 19.4 21.1 21.1
DEPTH (inches): 3.0 3.0 3.0 3.0\
WEIGHT (pounds): 9.0 13.0 16.5 17.0

STATIONS:

FOOTPRINT (inches): 6.5 x 8.5
WEIGHT (pounds): 1.9

STATION CABLE REQUIREMENTS

TYPE: Twisted, non-shielded, #24AWG
MAXIMUM LENGTH: 1,500 feet for multiline stations
SWITCHING PRINCIPLE: Solid-state, space-division analog switching with stored program

control

OPERATING ENVIRONMENT\

TEMPERATURE: 32-122 degrees F (0-50 degrees C)
HUMIDITY: 90 percent relative, non-condensing

TERMINATIONS

LINE: Standard, 6-conductor minijack (USOC RJ14C)
STATION: Standard, 50-pin female connectors for connection to external

distribution field on models N0616, N0820, and N1024.

Standard 6-conductor minijack (USOC RJ14C) for model N0308.

1-2

System Description IMI 66-064

MUSIC INTERFACE

INPUT LEVEL: 3 Volts peak-to-peak maximum
INPUT IMPEDANCE: Approximately 500 Ohms
CONNECTOR: RCA phono jack

CENTRAL OFFICE LIMITS

LOOP LIMITS: 1,900 Ohms maximum loop
CABLE INSULATION
LEAKAGE: 15,000 Ohms minimum

INDUSTRY REGULATORY
STANDARDS FCC Certified, part 15 (Class A)

FCC Registered (fully protected)
UL listed (power supply only)
EIA RS478
Bell publication 48002 guidance
Hearing aid compatible handset

MEMORY RETENTION
AFTER POWER LOSS 30 hours minimum (typically 200 hours)
FCC REGISTRATION NUMBER CVW7WC-12829-KF-E
RINGER EQUIVALENCE NUMBER 0.4B
PRODUCT CODE Common Equipment

N0308 3-line, 8-station
N0616 6-line, 16-station
N0820 8-line, 20-station
N1024 10-line, 24-station
Telephones

6702X 2-line monitor
6706X 6-line monitor
6714X 14-line monitor with SOHVA
Optional Telephones

6614E 10x14 monitor with SOHVA (Rev D and later)
6614T 10x14 speaker with SOHVA (Rev C and later)
6620E 5x20 monitor with SOHVA (Rev D and later)

6620T 5x20 speaker with SOHVA (Rev I and later)
Consoles
EB32X 32-button console

DB32S 32-button console with call announcer speaker
LCD Conversion

PCCXE Conversion Kit
6600E LCD cpeakerphone with SOHVA (Rev B and later)
Software Upgrade Kit

PSUXE-1 N0308 and N0616
PSUXE-2 N0820 and N1204

1-3

IMI 66-064 System Description

SECTION 3

GENERAL INFORMATION

CONFIGURATION

The model XE electronic key telephone system
consists of an electronic Key Service Unit (KSU), also
referred to as common equipment, dedicated
electronic key telephones, and interconnecting wiring
consisting of small, 4- or 6-conductor, twisted-pair
cable.

The station and line capacity of the various family
members are per the following chart.

MODEL CO/PBX STATION
NO. CAPACITY CAPACITY

N0308 3 8
N0616 6 16
N0820 8 20
N1024 10 24

The model XE telephone system is full featured, and
supports a specially designed group of key telephones
(model 67xxx-xx series) described below. In addition,
it also supports the following ExecuTech multiline
telephone models 6614E, 6614T, 6620E, 6620T, 6414
and 6414S. (If a model 6414S-xx is used, a moderate
volume setting may be required to avoid the possibility
of a squeal being sounded through the station speaker
during call announce and/or background music
operations.)

An optional kit supplied clock/chip socket assembly
can be added to allow the model XE system to support
the operation of a model 6600S or 6600E ExecuTech
LCD speakerphone in addition to the telephones
mentioned above. The product code for this LCD
upgrade kit is PCCXE. This kit is available through
normal distribution channels for field installation.

When this LCD upgrade kit is installed in an XE
system, the model number designation is changed
from Nxxxx to Kxxxx. The new model numbers
become as follows: K0308, K0616, K0820 and K1024.

The LCD speakerphone will provide the following
feature displays for the user’s convenience:

Time and Date

•

Call Duration Time

•

Do Not Disturb

•

Line Identification When Chosen Followed By The

•

Numbers Dialed
Intercom Calling Party Identification

•

Intercom Number Dialed

•

Re-display Of Call Time Of Last Call When HOLD

•

Key Is Pressed

A software upgrade kit is available for field installation.
The EPROM chip supplied in this kit will revise the
operating system software of the XE system to the
latest factory issued level. The product code for the
software upgrade kits are:

PSUXE-1 for N0308 and N0616
PSUXE-2 for N0820 and N1024

These kits are available through normal distribution
channels.

COMMON EQUIPMENT DESCRIPTION

The common equipment is a fully electronic device. It
is essentially a special purpose computer system
acting as a communications controller between central
office (CO), private branch exchange (PBX), or
CENTREX supplied lines and the proprietary
telephone stations. The software architecture of the
common equipment provides complete system support
and great flexibility of operation.

The common equipment is contained in a functional,
modern-style metal housing of contemporary design in
keeping with the needs of the modern office
environment. It is engineered to be wall or rack
mounted. The outline dimensions of the common
equipment cabinet are illustrated in Figure 1-1.

STATION DESCRIPTION

The model 67xxx-xx telephone stations are electronic,
microprocessor-controlled devices. They allow not
only multiline pickup but also single button access to
features available from the serving CO, PBX, or
CENTREX switch as well as the common equipment.
The outline dimensions of the system stations are
illustrated in Figure 1-2 and the images are illustrated
in Figure 1-3.

The stations provide the following features:

Full modular connection

•

4 fixed feature buttons with indicators

•

SPKR

•

MUTE

•

HOLD

•

ITCM

•

2 fixed feature buttons without indicators

•

TAP

•

TRANS/CONF

•

Programmable buttons with and without indicators

•

7-foot, 6-conductor line cord

•

1-4

System Description IMI 66-064

6 position, 4- or 6-conductor modular line jack

•

K-type handset (hearing aid compatible)

•

Ringer volume control (Off, Low, and High)

•

Desk/wall reversibility

•

DSS/BLF CONSOLE DESCRIPTION

The DSS/BLF console is an optional device designed
to be a companion to a system attendant station in
high call volume situations that require a dedicated call
transfer location. The console provides a direct station
selection (DSS) intercom, and an associated busy
lamp field (BLF). It also provides one-key access to
all-call when that feature is available.

The console may also be installed at any station port
to work in conjunction with a companion station
connected to an adjacent paired port.

The model EB32X-xx, DB32-xx, DB32S-xx, DB40-xx
and DB70-xx DSS/BLF consoles are all compatible
with the XE system. The station port to which they are
connected must be programmed as a DSS/BLF
console port. The console buttons are fixed for
DSS/BLF operation beginning with station 10 and
ending with the maximum station number in the
system. Theses buttons also provide autodial locations
at a second level of storage (accessed with the HOLD
button function). Additionally, any buttons, from
beyond system station capacity through a maximum of

32, are available as autodial locations at the first level
of storage. For example, a model N1024 key system
and a EB32X-xx or DB32-xx console will fix the first 24
console buttons as DSS/BLF buttons, and provide the
remaining eight buttons as autodial buttons. Plus, it
will provide autodial locations at the second level of
storage for the first 24 buttons. A total of 32 autodial
storage locations are provided. For larger consoles,
any buttons beyond a maximum of 32 will still be
blanked. For this reason, it is recommended that the
larger consoles (DB40 and DB70) not be used unless
absolutely necessary since the XE system has a
maximum station capacity of 24 stations thus leaving
these consoles with a large quantity of blanked
buttons.

The DB32S-xx Adjunct Feature Module can be used to
provide off-hook voice announce (OHVA) to a station
already busy on a call and allow subsequent
handsfree answerback (HFAB) by that station user.
The DB32S-xx Module can also be used as a
DSS/BLF console at the same time if desired. The
station port to which the Adjunct Feature Module is
connected must be programmed for the feature that is
required. When both DSS/BLF and OHVA operation
are required, the station port to which the console is
connected must be programmed as an Off-Hook Call
Announce port. When only DSS/BLF operation is
required, program the port as a DSS/BLF Console
port.

1-5

IMI 66-064 System Description

1-6

System Description IMI 66-064

1-7

1-8

IMI 66-064 System Description

1-9

System Description IMI 66-064

This page remains blank intentionally

System Description IMI 66-064

CHAPTER 2

DESCRIPTION OF SYSTEM FEATURES

AUTO-SAVE FEATURE

ACCESS DENIED

Access to particular lines can be denied at certain
stations in the system through system programming.
This feature is programmable on a per line/per station
basis as part of system or administration
programming.

ADD-ON CONFERENCE

(2 INTERNAL, 1 EXTERNAL PARTIES)

This system feature allows a station, while operating in
a private mode, to add another station to an outside
call.

ALL-CALL PAGING

(VIA STATION SPEAKERS)

All-call paging allows all of the stations to receive
announcements at the same time through the station
speaker. Origination of announcements must be via a
station handset. Each station can be programmed to
receive and/or to originate an all-call page. The
system default condition is that all stations have both
receive and originate capability. The arrangement of
paging as all-call is controlled by both system and
administration programming. See the discussion titled,
Zone Paging (via Station Speakers).

ALL INTERCOM LINKS

BUSY INDICATION

When all intercom paths are busy, the system causes
the intercom light at each station to be on steady.

AUTO DIAL

Each multiline station provides programmable dialing
features. Programmable buttons can be programmed
to store numbers for automatic dialing purposes. The
stored numbers can be up to fifteen digits in length
and can include line or intercom selection, numbers, #,
S, pauses, and flash signals. A pause is stored each
time the HOLD button is pressed, and a flash signal is
stored each time the TAP button is pressed. The
pause and flash intervals are programmable. Any
programmable button that does not have a line
assignment can be programmed as an auto dial.
Additionally, an auto dial number can be stored as a
secondary function at every button programmed for
direct station selection. Often used host PBX or
CENTREX feature access codes can be stored at a
programmable button location to provide one-button
access to the features. Also refer to the discussions
titled, Automatic Pause Insertion, Station Speed Dial,

and Programmable DSS/BLF.

The auto-save feature can be used to save the last
manually dialed number at any unprogrammed button
or at a specific button that was previously reserved for
this purpose. The button chosen for auto-save must be
blank and not currently programmed as a DSS button,
line select button, or auto dial button. An auto-save
can be made at a button previously used as an
auto-save button; however, the previously stored
number will be over-written. As many manually dialed
numbers can be saved in this manner as there are
separate unused buttons to be used for storage. If a
dialed number is longer than 15 digits, two or more
buttons can be used to save portions of it for later
chain dialing.

AUTOMATIC ABANDONED

HOLD RELEASE

If a distant party abandons a hold condition and
disconnects, the central office (CO) will send a forward
disconnect signal to the telephone system. When the
key system detects this signal, it will drop the line from
the hold condition and return it to service. The forward
disconnect signal may be either 50 msec. or 350
msec. and the key system is programmable to match
this time interval. Both the system and the
administration programming can be used to set the
time interval between hang-up and line-drop.

AUTOMATIC HOLD TRANSFER TO INTERCOM

(ANSWER HOLD)

If the intercom line is selected while an outside line call
is active, this system feature causes the outside call to
be automatically placed on hold.

AUTOMATIC PAUSE INSERTION

When the system stores a dialed number for later
redial, it automatically stores a pause whenever the
user waits between digits. The automatic pause is
inserted in the stored number sequence at the point
where the manual pause in dialing occurred. The wait
time is programmable between 2 sec. and 750 msec.
The wait period is programmable by system or
administration programming.

AUTOMATIC PRIVACY

(PROGRAMMABLE)

A line can be made private or non-private through
class of service programming. In the private mode, a
station has exclusive use of the line during a call. No
other station can access that line unless it is included

through the use of the add-on conference feature. In
the non-private mode, all stations with that line

2-1

IMI 66-064 System Description

appearance can gain access at the same time
(sometimes known as common line pickup). A line is
specified as private or non-private through system or
administration programming. Also see the discussion
titled, Add-on Conference And Privacy Release.

AUTOMATIC REDIAL (OF BUSY

NUMBER OR UNANSWERED CALL)

Automatic redial of the last dialed number can be
made available at every station through button
programming. In most cases, the station user must
program a button for use as an auto redial button;
however, some telephone models provide an A16
button as part of the A-button field and this provides
an auto redial function as a fixed feature. With this
feature, a busy number or an unanswered call can be
redialed repeatedly. Once automatic redial is
activated, the station will select the line, automatically
dial the number, and wait for a response. It will do this
once a minute for approximately 10 minutes. The user
must lift the handset to take immediate control if the
call is completed. Users of the optional speakerphone
station can take control by pressing the SPKR button
instead of lifting the handset.

AUXILIARY EQUIPMENT INTERFACE

A non-key system telephone device or data device can
be connected ahead of the common equipment on
certain line ports across the tip and ring leads. Special
terminals in the line jack are provided for this purpose.
The system can detect an off-hook condition in the
connected device, and turn on the line status light at
the key system telephone stations with access to the
line to indicate the busy condition.

AUXILIARY STATION RINGER

INTERFACE

The auxiliary station ringer interface provides
“dry-contact” relay closures whenever station 17 rings.
The contact closures track the ringing pattern of
station 17, and can be used to control an external
signalling device. When a particular station port is
programmed to function as a PA port, the auxiliary
ringer interface relay contacts automatically become
supervisory contacts. They close when the PA port is
called. In this configuration, they are used to enable
an external PA system. Also refer to the discussion
titled, Common Audible Ringer Interface.

BACKGROUND MUSIC

If an external music source is provided, background
music can be turned on and off at individual stations.
Background music automatically turns off during calls.

The system provides all of the basic, 1A2-type, key
service features. These features are: selective line
pickup, common line pickup, multiline pickup, and
hold.

Battery back-up assemblies including chassis, cable,
and battery are offered as optional kits (available from
Comdial). The assemblies are designed to connect
directly to the un-interruptable power source (UPS)
interface located on the common equipment chassis.
No user intervention is required with this feature, and
no class of service programming is required.

Provision has been made for attaching a Comdial
provided optional battery back-up kit to give full
uninterruptable system power in case of an AC power
loss. The switching and trickle charge circuitry are in
the common equipment, while batteries, chassis, and
cable are packaged as a separate option. When
plugged into an active AC power source the common
equipment will constantly charge the attached
batteries with a trickle current. Built-in circuitry
automatically switches to battery power when AC
power is lost. With batteries at full charge, a fully
loaded system will operate for a minimum of one hour
without AC power. No class of service programming is
required.

The internal speaker at each multiline station provides
call-announce capability over the intercom link. A
handsfree response to a call-announce call can be
made. This response is transmitted by the microphone
built into the handset. Also refer to the discussion
titled, Voice Announce Blocking

A user at any station can dial a special prefix code,
followed by the number of a ringing station, to answer
a ringing call at that station.

A user at any station can dial a special code and
answer a ringing call at any station in the system. The
feature can be enabled or disabled by system or
administration programming.

BASIC KEY SERVICE (1A2)

BATTERY BACK-UP

(CHASSIS, CABLE, AND BATTERIES)

BATTERY BACK-UP INTERFACE

CALL ANNOUNCE WITH HANDSFREE

ANSWERBACK

CALL PICKUP - DIRECTED

CALL PICKUP - SYSTEM

Also refer to the discussion titled, External Music
Source.

2-2

System Description IMI 66-064

CALL TRANSFER - SCREENED

Screened call transfer allows outside calls to be
transferred from one station to another, via the
intercom link, in one of two ways. If both stations have
access to the line, a common line pickup transfer can
be effected. If the other station does not have access
to the incoming line, transfer can still take place using
the system transfer feature. For a screened transfer, a
call is transferred to another station with a pre-transfer
announcement by the transferring party. Transferring
of calls is accomplished with the T/C
(TRANSFER/CONFERENCE) button.

CALL TRANSFER - UNSCREENED

An active call can be transferred to another station
without being announced. The transferred call will ring
the other station and await an answer. The call will
automatically ring back to the transferring station after
a programmable recall period. A transferred call will
only ring if the station is idle. If the other station is busy
on intercom or is already ringing with another call, the
transferred call will immediately recall the transferring
station. If the other station is idle or has background
music enabled, it will start ringing immediately. If it is in
any other state, it will not ring until it returns to an idle
state.

CALLING STATION IDENTIFICATION

If the station number of a calling station has been
programmed into the DSS/BLF of a called station, the
calling station will be identified by the flashing BLF
light at the called station. The lights adjacent to
programmable buttons indicate status of DSS
telephones: dark = idle, steady-on = in use, and
flash = calling.

CLASS OF SERVICE PROGRAMMING (EACH LINE

AND STATION)

Each line and station in the system can be
programmed with a unique class of service operating
condition. Class of service programming can be
performed using instructions provided in Chapter 4.

CLASS OF SERVICE PROGRAMMING (FROM MAIN

STATION)

Both system and administration class of service (COS)
programming is performed from station 10 after a base
level programming step is entered. System COS
programming is used by the installer to configure the
system and assign the line conditions. Administration
COS programming is used by the on-site administrator
to re-configure the system as required. Line condition
assignment is not a part of administration
programming. Refer to Chapter 4 for programming
details.

COMMON AUDIBLE RINGER INTERFACE

Connections are available at the key service unit
which provide “dry-contact” relay closures whenever
an incoming line rings. These contact closures track
the ringing pattern and can be used to control an
external signalling device. When a particular station
port is programmed to be a PA port, the common
audible ringer interface contact points automatically
become supervisory contacts which close when the
PA port is called. In this configuration, they are used
to enable an external PA system. Also, see the
discussion titled, Auxiliary Station Ringer Interface.

DEFAULT FUNCTIONAL PROGRAM

At initial power up of the system, the operating
features are set to a specific group of operating
conditions (default conditions). The default conditions
provide a complete operating system for normal use.
The system can be left as a defaulted system or
operating conditions can be reprogrammed if desired.
A system can be defaulted at any time using the
master clear procedure included with the system class
of service programming; however, this action also
clears all user stored auto dial and speed dial
numbers.

DELAYED RINGING

Refer to the paragraph titled, Flexible Ringing
Assignments.

DIAL 0 FOR SYSTEM ATTENDANT

The system attendant station (station 10) is signalled
whenever the digit 0 is dialed on the intercom line.

DIRECT STATION SELECTION

INTERCOM

Refer to the discussion titled, Programmable
DSS/BLF.

DISTINCTIVE RINGING

The ringing cadence of an incoming call is the same
as the ringing cadence of the TELCO, PBX, or
CENTREX system. The ringing cadence of an
intercom call presents two tone bursts sounded every
4 seconds.

DO NOT DISTURB

Any station can be set to a do-not-disturb mode using
the SPKR button. While in this mode, the station will
not ring on any incoming call nor will it accept an
intercom call. A party making an intercom call to a
station set in the do-not-disturb mode hears a fast
busy tone. The feature cannot be overridden by the
calling party.

2-3

IMI 66-064 System Description

programming can be used to program a line port as an

DSS/BLF CONSOLE (OPTIONAL)

The DSS/BLF Console is designed to be a companion
to any system station. It is useful with high call
volumesystems which require a dedicated call transfer
location. The console provides a one-button direct
station selection (DSS) intercom and an associated
busy lamp field (BLF). It also provides one-button
access to system-wide, all-call paging. The console is
designed to be connected to any station port and
serve as a companion to the station connected to the
adjacent data-paired port. System or administration
programming is used to program a station port as a
DSS/BLF port.

END TO END SIGNALLING

ON INTERCOM

After an intercom call has been established, the
system can continue to send dialing signals (DTMF
tones) through the intercom path to station ports that
are programmed as OPX unit ports. This feature can
be performed from every station in the system, and is
used by peripherals such as an OPX unit and voice
mail equipment.

END TO END SIGNALLING

ON LINES

After an outside call has been established, the system
can continue to send dialing signals (DTMF tones)
through the telco network and have them received at
the distant end for inward call completion (bank by
phone, etc.). This conventional, off-hook dialing
feature can be performed from every station in the
system. No class of service programming is required.

EXCLUSIVE HOLD

Exclusive hold prohibits a held call from being
retrieved by any other station. The exclusive hold
condition also links the held call to the timed hold
recall timeout feature. After timeout, audible and
visual signalling will occur and the exclusive hold
condition will revert to a normal line hold condition.
System or administration programming can enable this
feature.

EXTERNAL PAGING INTERFACE

A station port or line port can be programmed to
interface with an external paging amplifier. The
paging amplifier can then be dial accessed through the
station port or directly accessed through the line port
from other stations in the system. DTMF tones can be
dialed through the interface to make a zone selection if
zone paging is provided by the external paging
amplifier. System or administration programming can
be employed to program a station port as an external
paging port. Only system class of service

external paging port.

EXTENDED DUAL TONE MULTIPLE

FREQUENCY (DTMF) TONES

The model XE telephone system can access
answering machines, banking computers, voice mail
equipment, etc. that require DTMF tones which are
longer than the standard 80 msec. tone. A shift to a
longer tone of preprogrammed length is automatically
made 10 seconds after a line is selected or 10
seconds after the last digit is dialed. A user can shift
from one tone length to the other by pressing the
HOLD button and then reselecting the line. It is
recommended that the shortest duration possible be
chosen. DTMF generation is a system feature and if
several stations are using the extended DTMF feature
at the same time, a delay in the time between button
press and tone sound may be noticed.

FLEXIBLE LINE ASSIGNMENT

Refer to the discussion titled, Square/non-Square
System.

FLEXIBLE RINGING ASSIGNMENTS

Ringing assignments are programmable on a per
station/per line basis. Ringing can be controlled for
every line that has an appearance at each station.
Direct, or immediate, ringing can be programmed for
some assigned lines and delayed ringing programmed
for others. Direct or delayed ringing is programmed
through system or administration programming.

HANDSFREE ANSWER INHIBIT

The MUTE button on a multiline station can be used to
block all handsfree answerback response. This
arrangement will prevent a station user from
monitoring another station site using the monitoring
ability of the voice announce feature. When the
button is pressed, all handsfree answerback is
disabled thus inhibiting any off-site monitoring. The
speaker light will flash to indicate that this feature is
active. Also refer to the discussion titled, Mute.

HEADSET INTERFACE

A station port can be programmed to allow the
operation of special telephones which provide the user
with a headset option. Programming for this feature is
through either system or administration programming.

HEARING AID COMPATIBLE HANDSET

The station handset is compatible with
magnetically-coupled hearing aids.

IDLE LINE PREFERENCE

The system can be programmed on a per station basis
to enable idle line preference. When idle line
preference is enabled, taking the handset off-hook will

2-4

System Description IMI 66-064

automatically connect the station to any assigned line
that is idle and has been arranged for this feature.
The line button will not have to be pressed. This
feature is mutually exclusive with prime line automatic.
Programming for this feature is through either system
or administration programming.

I HOLD AND I USE INDICATIONS

The light associated with a line button provides a
visual indication of the status of that line. When a
station user has a line in-use or on-hold at a station,
the light indication provided at that station is of a
different flash rate than the indication provided at the
other stations in the system.

INTERCOM CALL PROGRESS TONES

Intercom call progress is marked by special tones. A
steady tone is provided for dial tone. For tone
signalled intercom calls, a two-tone burst is sounded
every four seconds at a called station and returned to
the caller as ring-back. For a voice signalled intercom
call, a single tone burst is sounded at a called station
and returned to the caller as ring-back. When a called
station is busy on an outside call, the feed-back
supplied to the caller is programmable with class of
service programming. This feed-back can be either a
ring-back tone or a busy tone. When set for ring-back
tone, the called station sounds subdued ringing during
the call. When a called station is busy on the
intercom, a busy signal of one tone burst sounded
each second returns to the calling station.

INTERCOM LINE LOCKOUT

Refer to the discussion titled, Voice Announce
Blocking.

INTERCOM LINE TIMEOUT

Should the intercom line be selected with no dialing or
other action taking place, the intercom will timeout
after ten seconds, and return to an idle state.

LAST NUMBER REDIAL

Each station is provided with a last number redial
feature. This feature will save thirty digits of the last
outside number dialed. A newly dialed number will
always automatically replace a previously dialed
number. Upon command, the system will choose a
line and redial the saved number. The system will first
choose the prime line if assigned and idle. If it is busy
or unavailable, the system will choose any line
assigned to idle line preference. If they are
unavailable, the system will chose the last line used at
the station. If it is busy, no further choice is made.
Also refer to the discussion titled, Automatic Pause
Insertion.

LCD SUPPORT

The common equipment can be field modified with an
optional up-grade kit which allow the system to
support the use of LCD speakerphones having a
Liquid Crystal Display (LCD). The LCD speakerphone
ports are identified by system or administration
programming.

When a system is modified, the model code of it is
changed from an N prefix to a K prefix (i.e. N1024
becomes K1024, etc.).

LINE PRESELECTION

A line can be manually selected before lifting the
handset (for handsfree dialing) or after the handset is
lifted.

LINE TYPE

A line port is programmed as to type. The program
type is chosen based upon the toll restriction that is to
be applied to calls made over the line connected to
that port. A line port is assigned as type 1 when any
enabled toll restriction is to be applied with the first
digit dialed. Such a line type is often assigned when a
CO line is connected. A line port is assigned as type 2
when any enabled toll restriction is to be applied
beginning with the second digit dialed. Such a line
type is often assigned when a PBX or CENTREX line
with any trunk access code is connected. A line port is
assigned as type 3 when any enabled toll restriction is
to be applied beginning with the second digit dialed
whenever the first digit is a 9. If the first digit is not a
9, no restriction is applied. Such a line type is often
assigned when a PBX or CENTREX line with a trunk
access code of 9 is connected. Line types can only be
selected as part of system class of service
programming.

MANUAL HOLD

A button activated feature at each station will place an
outside line on hold. Pressing the HOLD button holds
the call, provides a distinctive flash rate of the line
button indicator, and allows the user to access other
station features. The holding station or any other
station which has access to the line can retrieve the
held call.

MEMORY RETENTION WITHOUT BATTERIES

Independent of the optional battery pack, the system
memory is electronically protected during AC power
failures by an electronic component sometimes
referred to as a “super-cap”. The stored program data
will remain in memory for a minimum of 30 hours
provided that the system has been powered
continuously for at least 30 minutes prior to the power
failure or disconnection.

2-5

IMI 66-064 System Description

speaker light flashes to indicate a muted condition.

MESSAGE WAITING

Special dialing codes enable a station user to control
the message waiting (MW) light at other stations in the
system. When the message waiting light is turned on
at a station, a call can be placed to the originating
station to pick up the message.

MODULAR WIRING AND JACKS/4-CONDUCTOR

WIRE SYSTEM

The system can be completely interconnected by
employing industry standard 50-pin connectors and
modular plug/jack combinations. Station wiring is
small, 4-conductor, twisted-pair cable throughout the
system.

MOMENTARY BUTTONS WITH LED

INDICATORS

The station buttons are momentary contact, press and
release types. They provide line selection, call
monitoring, and other feature selection. Visual
indication of the feature selection is provided by
solid-state, long-life, light emitting diodes (LEDs).

MULTILINE CONFERENCING

This feature will allow one or more multiline stations to
access two outside lines at the same time resulting in
a conference arrangement. Conference transmission
levels are not compensated.

MUSIC INTERFACE (EXTERNAL SOURCE)

A jack is provided on the common equipment for the
connection of a customer-provided KX registered
music source. Also refer to the discussions titled,
Background Music and Music-on-hold.

MUSIC-ON-HOLD

Music is provided to outside lines that are placed on
hold if an external music source is connected to the
system and the feature is turned on from station 10.
System, administration, or attendant programming can
be used to program this feature.

MUSIC-ON-HOLD SYSTEM-WIDE

ENABLE/DISABLE

Music is provided to outside lines that are placed on
hold if an external music source is connected to the
system. Music-on-hold can be disabled system-wide
by attendant action. Attendant programming is used
to enable/disable this feature. Also refer to the
discussions titled: Music Interface, and Music-on-hold.

MUTE

The button provides push-on/push-off operation. Also
refer to the discussion titled, Handsfree Answer Inhibit.

NIGHT TRANSFER (OF RINGING)

The day, or normal, ringing of incoming lines can be
transferred to a particular station or stations (chosen
through class of service programming) for off-hour or
special purpose answering. The night transfer mode
can only be activated from station 10. Night transfer of
ringing can be assigned to specific stations using
system or administration programming. It is then
turned on or off by using system or administration as
well as attendant class of service programming.

OFF-HOOK VOICE ANNOUNCE WITH HANDSFREE

ANSWERBACK

With the off-hook voice announce (OHVA) feature, an
announcement can be made from one station to
another station that is busy on a call. The OHVA
announcement is made in a manner that permits the
distant on-line party to hear it and to hear the verbal
response to it unless action is taken with the MUTE
button. The OHVA feature is available at stations that
are equipped with a multiline telephone and an adjunct
feature module (32-button DSS/BLF console with
call-announce). Two data-paired station ports are

required to provide OHVA operation.

An OHVA call is preceded by a ring burst. Then,
several quick tone bursts followed by the
announcement are delivered through the loudspeaker
in the adjunct feature module. The called party can
verbally reply to an OHVA call in a handsfree manner
without interrupting the active call. Reply is made by
speaking toward the OHVA microphone included in the
adjunct feature module. The distant on-line party can
hear this response unless the MUTE button is pressed
at the called station to mute the handset transmitter.

A station that has the voice announce blocking feature
turned on cannot receive an OHVA call.

Station class of service programming is used to
program a station port to be a multiline telephone port
and the data-paired port to be a console with call
announce port. Also refer to the discussion titled:
Secure Off-Hook Voice Announce.

ON-HOOK DIALING

Every multiline station provides manual and/or
automatic dialing while the station handset is on-hook.
An internal speaker monitors call progress for
completion. The handset must be taken off-hook to
provide the voice link on non-speakerphone stations.

Each station has a MUTE button which, when
pressed, will mute the handset transmitter (or internal
microphone on speakerphones) to prevent the user’s
voice from being heard by the distant party. The

2-6

System Description IMI 66-064

OPX SUPPORT

The system supports the operation of the optional off
premises extension (OPX) unit. System or
administration programming arranges a station port for
OPX operation.

A device (such as a model 2500 telephone set or
compatible device) that is connected through an OPX
unit to a station port can access both intercom and
outside lines. The system default provides intercom
line access when the device goes off-hook. With
either prime line alone or prime line and idle line
preference enabled through programming, the device
connected through the OPX unit will seize an outside
line when it goes off-hook. After going off-hook, the
user can get the intercom line by pressing theTAP
button. If no digits are dialed after going off-hook, the
outside line is dropped when the TAP button is
pressed. If digits are dialed after going off-hook, the
outside line is placed on hold when the TAP button is
pressed.

ORIGINATING DENIED

The ability to originate calls on certain lines can be
denied at individual stations through system
programming. The originating denied feature is
programmed on a per station/per line basis.
Originating denied does not prevent a user from
answering a ringing line, retrieving a held call or
receiving a transferred call. Call origination on a line is
denied at a particular station by the system or
administration programming.

PBX/CENTREX/CENTRAL OFFICE

COMPATIBLE

System features and programmable buttons support
the requirements of most PBXs, Central Offices, and
CENTREX systems. Numbers, #’s, S‘s, programmable
pauses, and flash signals can be made a part of every
stored number for access to host system feature
codes.

PERSONALIZED RINGING TONE

This programmable feature enables stations to ring in
a distinctive manner with one of four different tones.
The ringing tones are combinations of four different
frequencies and two different warble rates. Personal
ringing tones can be assigned with system or
administration programming.

POWER FAILURE TRANSFER

A power failure line connection is available for
installing an industry-standard telephone such as a
Comdial model 2500-xx. The installed power-fail
telephone is automatically connected directly across
line 1 by the system whenever there is an AC power
failure. Normal origination and reception of calls
through the power-fail telephone is possible during an

AC power failure. The power-fail telephone is
automatically disconnected as soon as power is
restored.

POWER ON, VISUAL INDICATION

The common equipment has a red LED which
monitors the status of the system, and provides an
“AC power-on” indication.

PRIME LINE AUTOMATIC

If a station is programmed for prime line automatic, the
designated outside line or intercom line will be
automatically selected when the handset is taken off
hook. Prime line pick up may be pre-empted by
preselecting another line before lifting the handset. If
the prime line is ringing, it is automatically answered
by lifting the handset. Assign a prime line to a station
through system or administration programming.

PRIVACY RELEASE

A line can be made non-private at a particular station
while remaining private at all other stations. This
arrangement allows other stations with that line
appearance to join that particular station whenever it is
on the privacy-released line. A line is specified as
private or non-private at a particular station with
system or administration programming. Also see the
discussions titled, Add-on Conference and Automatic
Privacy.

PROGRAMMABLE BUTTONS

All multiline keysets are equipped with a minimum of
twelve programmable buttons which can be
programmed a line pick-up, auto dial, station speed
dial, and DSS action. Refer to the discussions titled,

Auto Dial, Programmable DSS, And Station Speed
Dial. System or administration programming is used to

assign functions to programmable buttons.

PROGRAMMABLE DSS/BLF

(DIRECT STATION SELECTION/BUSY LAMP

FIELD)

A multiline station user can store true, one-button,
direct station selection (DSS) at any programmable
button location to create a DSS button. When this
button is pressed, any active outside call is
automatically placed on hold and an intercom call is
automatically made to that previously stored station
number. The visual indicators of the stations
programmed at the button locations form a busy lamp
field (BLF). The BLF conveys station status to the
user. An auto dial number can also be programmed
as a secondary function at every DSS/BLF memory
location. Also refer to the discussions titled, Tone Or
Voice Signalling (Intercom) and Auto Dial.

2-7

IMI 66-064 System Description

PULL OUT DIRECTORY

Each desk mounted telephone is equipped with a pull
out directory. This directory can be used for recording
the system speed dial, station speed dial, or other
frequently called numbers.

PULSE/TONE SWITCHABLE

When rotary dial lines are installed, the user can
switch from pulse (rotary dial signals) to tone (Dual
Tone Multiple Frequency signals - DTMF). This
feature is useful for accessing special circuits requiring
DTMF tones such as banking machines, etc. The
system is programmed on a per line basis to allow this
feature at all stations. The system or administration
class of service programming enables this feature on a
per line basis.

RINGING LINE PREFERENCE

The system can be programmed on a per station basis
to provide ringing line preference on all lines
programmed for ringing at a station.

When ringing line preference is enabled at a station,
taking the station off-hook automatically connects it to
any outside line which happens to be ringing at the
station. A line button will not have to be pressed. The
ability of a particular station to answer a ringing line
without line selection is enabled by the system or
administration class of service programming.

SECURE OFF-HOOK VOICE ANNOUNCE

With the secure off-hook voice announce (SOHVA)
feature, an announcement can be made from one
station to another station that is off-hook and busy on
a call. The SOHVA announcement is made in a
manner that prevents the distant on-line party from
hearing it or from hearing the verbal response to it
because the MUTE button must be pressed for reply.
The SOHVA feature is available at stations that are
equipped with a telephone that includes SOHVA
capability. The telephone requires two data-paired

station ports to provide SOHVA operation.

A SOHVA call is preceded by a ring burst. Then,
several quick tone bursts followed by the
announcement are delivered through the handset
receiver of the telephone. Delivering the
announcement in this manner prevents the distant
party from hearing it. A station employing a
speakerphone being operated in a handsfree mode
will receive a ring burst and can then be taken off-hook
to receive the SOHVA call. The announcing caller
receives several tone bursts to alert them that they are
making a SOHVA call and that they may not get a
reply should the called party choose to not respond.

Response to the SOHVA call is effected by pressing
and holding the MUTE button and speaking into the

handset. Because the MUTE button is pressed, the
distant party is prevented from hearing the response.

The system provides SOHVA operation at every
station port; however, a station that has the voice
announce blocking feature turned on cannot receive a
SOHVA call. Also, on handset equipped telephones,
the telephone headset cannot be used to receive a
SOHVA call.

Station clas of service programming is used to
program a station port to be a multiline telephone port
and the data-paired port as a console with call
announce port. Also refer to the discussion titled:

Off-Hook Voice Announce with Handsfree Answerback
and to the Chapter 3 paragraph titled: Secure
Off-Hook Voice Announce Station found on page 3-11.

SECURE OFF-HOOK VOICE ANNOUNCE (SOHVA)

GROUPS

The ability to receive and originate SOHVA and OHVA
calls is provided to every station in the system. Any
station in the system can send a SOHVA or OHVA call
to any other SOHVA or OHVA-equipped station in the
system. Through this feature, the ability of a station to
receive and/or originate SOHVA or OHVA calls can be
disabled through programming so that certain stations
can be grouped together for SOHVA or OHVA calling
between one another while other stations in the
system are excluded from this group. Stations can be
arranged in up to four different groups for exclusive
SOHVA or OHVA calling. For example, the stations of
an executive and an assistant can be arranged into the
same group as follows: Program the executive’s
station for receive in group 1 and program the
assistant’s station for originate in group 1. Do not
program any other stations to have receive or originate
capability in group 1. This arrangement provides
exclusive SOHVA or OHVA calling between the two
stations. More executive stations can be programmed
to have receive capability in group 1 thus giving the
assistant the ability to make SOHVA or OHVA calls to
them as well. These executive stations in group 1
cannot make SOHVA or OHVA calls to one another,
however, since they do not have originate capability.
Both class of service and administration programming
can be used to form SOHVA groups. Also refer to the
discussion titled, Secure Off-Hook Voice Announce
and Off-Hook Voice Announce with Handsfree
Answerback.

SELF DIAGNOSTICS

Each station can execute a self test when so enabled.
This test verifies processor, indicator, and tone
functions. Instructions for activating self diagnostics
are provided in Chapter 3, Section 3 of this publication.

2-8

System Description IMI 66-064

SINGLE-DIGIT STATION DIALING

Refer to the discussion titled, System Speed Dial.

SPEAKERPHONE (OPTIONAL)

The optional speakerphone provides handsfree
operation of all features, except voice signalled
intercom calls. The handset must be lifted for this
purpose.

SQUARE/NON-SQUARE SYSTEM

A system can be programmed to be square or
non-square as desired. In a square system, a specific
line is assigned to the same button on every station in
the system. In a non-square system, any line can be
assigned to any available programmable button on
every station in the system. Also refer to the
discussion titled, Tenant Service. Button mapping for
line appearance can be performed on each station
using the system or administration class of service
programming.

STATION BY STATION PRIVACY

Refer to the discussions titled, Automatic Privacy and
Privacy Release.

STATION SPEED DIAL

Each station can be programmed to provide ten speed
dial numbers at the keypad buttons. Station speed
dial numbers can be up to fifteen digits in length and
can include line or intercom selection, numbers, #, S,
pauses, and flash signals. A pause is stored each
time the HOLD button is pressed, and a flash signal is
stored each time the RECALL button is pressed.

SYSTEM SPEED DIAL

Thirty, system-wide, speed dial numbers are provided.
The system speed dial numbers can be up to fifteen
digits in length, and can include numbers, #‘s, S‘s,
pauses, and flash signals. System speed dial number
programming can only be performed at station 10;
however, once programmed, they can be used at
every station in the system. System, administration, or
attendant programming can be used to program
system speed dial numbers.

SYSTEM SPEED DIAL TOLL

RESTRICTION OVERRIDE

This feature makes it possible to override toll
restriction parameters when a system speed dial
number is dialed. With it, it is possible to use toll
restriction tables to restrict calls from being made to
certain toll areas yet allow specific numbers in the
restricted areas to be called by storing them as system
speed dial numbers. With overrride enabled, toll
restriction parameters assigned at a station will be
overidden when a system speed dial number is called.
With override disabled, toll restrictions assigned at a

station will prevent it from calling a system speed dial
number that matches the restrictions. Class of service
programming or Administration programming can be
used to enable or disable this feature. Refer to the
discussions titled, System Speed Dial and Toll

Restriction - Flexible.

SUBDUED RINGING

Subdued ringing is automatic at any station that is
busy on an outside line.

TAP (FLASH/RECALL)

When host system custom calling features are
available via a “flash” signal, the system can be
programmed so that the TAP button will generate a
“flash” signal when it is pressed. When custom calling
features are not available, the TAP button functions as
a positive disconnect or dial tone recall button. These
two features are mutually exclusive. The flash/recall
time is assigned through system or administration
programming.

TENANT SERVICE

Two or more closely located sites can simultaneously
be served by the same common equipment. Each site
is provided with dedicated trunk facilities and separate
feature and class of service complements. Also, refer
to the discussion titled, SQUARE/NON-SQUARE
SYSTEM. Button mapping for line appearance can be
performed on each station using the system or
administration programming.

TIMED HOLD RECALL

After a call has been on hold for a programmed length
of time, the system will recall the station that placed
the call on hold. It also visually signals all other
stations. The audible signal is repeated at the end of
each reoccurring time out period. The visual indication
continues until the held call is picked up. The system
or administration programming sets the timed hold
recall time period.

TOLL RESTRICTION - FLEXIBLE

Flexible toll restriction can be programmed to prohibit
some or all stations from calling a wide range of
number combinations while allowing specific
exceptions. Restrictions are specified by up to four
entries on a deny table while exceptions are specified
by up to four entries on an allow table. Allow entries
will always override deny entries. Up to eight digits
are permitted for each entry. A “match anything” digit
(# symbol) can be included as part of an entry to
represent any digit from 1 to 0. This is used to deny
or allow a range of numbers with one entry. A
separate pre-programmed 1+800 allow table permits
this dialing feature to be selected regardless of any
restrictions which may be specified. The dialing of 911
and 1+911 is always allowed.

2-9

IMI 66-064 System Description

Once programmed, flexible toll restriction is assigned
on a per line/per station basis. In addition to flexible
restriction, or as an alternative to it, stations can be
restricted with 1/0 call restriction assignment. When
1/0 call restriction is selected, 1+ 7 digit dialing can be
allowed if desired. Either system or administration
programming is used to specify the deny and allow
entries and assign the restriction to line and station.

TONE OR VOICE SIGNALLING

(INTERCOM)

Intercom calls can be tone signalled or voice signalled
as desired. The tone signalled intercom call must be
answered by lifting the handset. The voice signalled
intercom call can be responded to in a handsfree
manner. The class of service programming
determines which signalling method is employed as
the primary method when an intercom call is made.
The alternate method is available through user action
at the station. Intercom call progress is marked by
special tone signals. The system or administration
programming determines which type of intercom
signalling is first option signalling for the system. Also

refer to the discussions titled, Intercom Call Progress
Tones and Voice Announce Blocking.

VOICE ANNOUNCE BLOCKING

This feature allows the user to block voice announced
intercom signalling by dialing a special code. This
feature, when enabled, also blocks the reception of a
SOHVA call.

ZONE PAGING (VIA STATION SPEAKERS)

Zone paging allows groups of stations to receive
announcements through the station speakers. The
programming can enable zone paging in up to three
different zones. A station can be programmed to only
receive announcements or programmed to originate
announcements as well. Each station can be
programmed to be in any or all zones for both
receiving and originating announcements. The ability
of each station to originate and/or receive a page, and
the arrangement of the paging into different zones are
controlled by system or administration programming.
Also, refer to the discussion titled, All-Call Paging (via

Station Speakers).

2-10

System Description IMI 66-064

CHAPTER 3

INSTALLATION

SECTION 1

STANDARD INSTALLATION DETAILS

MOUNTING CONSIDERATIONS

The common equipment cabinet should be attached

•

vertically to any sturdy, flat, surface or vertically rack
mounted if desired.

Cabinet must be located within four (4) feet of a

•

proper electrical outlet. The system requires a
dedicated 117VAC 15 AMP circuit, with a third-wire
ground, supplied to a standard electrical outlet
(NEMA 5-15R).

The distance between the common equipment and

•

the TELCO/PBX jacks must be 25 feet or less as
per FCC requirements. A nominal distance of 7 feet
is recommended.

The mounting location must be secure and dry and

•

have adequate ventilation. The temperature range
of the location must be within 32-122 degrees F
(0-50 degrees C), and the relative humidity must be
less than 90 percent non-condensing.

If the mounting surface is damp or if it is concrete or

•

masonry material, a backboard must be attached to
the mounting surface to be used for common
equipment mounting. Suitable mounting
backboards are available commercially or can be
constructed out of 1/2-inch plywood cut to size.

Tools and hardware required:

•

Fasteners - wood screws (1/4 x 1-inch round head),
toggle bolts, or wall anchors

Screwdriver - to match fasteners

•

Electric drill - if prepared holes are required

•

Connecting tool - for fastening wires to a type-66

•

connector block.
Crimping tool - for 623-type modular plugs.

•

INSTALLATION NOTICE

Per The Underwriters Laboratories regulation 1459,
2nd edition, be aware of the following precautions
when installing telephone equipment that is to be
directly connected to the telephone company network:

Never install telephone wiring during a lightning

•

storm.
Never install telephone jacks in wet locations unless

•

the jack is specifically designed for wet locations.
Never touch uninsulated telephone wires or

•

terminals unless the telephone line has been
disconnected at the network interface.

Use caution when installing or modifying telephone

•

lines.

MOUNTING PROCEDURE

1. Unpack, and carefully inspect the common
equipment and telephones for shipping damage.
Notify the shipper immediately of any damages
found. Verify that the packages contain all parts
and accessories needed for proper installation and
operation.

2. If a backboard is required at the mounting location,
attach it securely to provide a stable mounting
surface for the equipment.

3. The common equipment is attached using three
mounting holes located as shown on Figure 3-1.
While refering to Figure 3-1, measure and mark the
location of the mounting holes on the mounting
surface.

4. Drill holes in the mounting surface of a proper size
to accommodate the hardware being used. If
necessary, prepare these holes with inserts,
anchors or other attachment devices as dictated by
the type of mounting surface.

5. Insert the top screws into the mounting surface, and
tighten them to within approximately 1/8-inch of the
surface.

6. Hang the cabinet on the top screws using the
mounting holes located on the rear of the cabinet.
Note that these holes are elongated with an
enlargement at one end. This feature allows the
cabinet to slide down on the screws to secure the
mounting when the cabinet is hung on them.

7. Insert a third screw through the mounting tab
located on the lower edge of the cabinet and into
the mounting surface, and tighten it into place

8. Place the individual telephones as desired and in
keeping with accepted industry and office
standards. A telephone can be wall mounted if
necessary as they are desk/wall reversible.

9. Interconnect the system per the details shown in
Tables 3-1 and 3-2 and Figure 3-3 shown at the
end of this section.

3-1

3-2

IMI 66-064 System Description

IMI 66-064 System Description

AC POWER CONNECTION

Employ a dedicated 117VAC 15 AMP circuit, with a
third-wire ground, supplied to a standard electrical
outlet (NEMA 5-15R) for the AC power connection.
AC power connection is illustrated in Figure 3-2
shown below.

A plug-in power line surge protector should be

•

installed between the power cord and the AC outlet.
Do not connect the AC power cord until the

•

installation has been checked.
To apply AC power, connect the power cord to the

•

electrical outlet.

BATTERY BACK-UP

The common equipment provides an interface
connector for the connection of an optional external
battery assembly. This assembly is available
separately as a kit.

CAUTION

Be sure that the AC power cord is connected
to the electrical outlet before connecting the
external battery assembly to the common
equipment interface connector. This ensures
that internal protection circuitry is operating to
prevent damage that could result from
improper connection.

When charged to full potential, the optional Comdial

•

model BBU01 external battery assembly provides a
minimum of one hour of operation should the AC

power to the system be interrupted. No calls will be
dropped when an AC power failure causes the
system to automatically switch over to BBU01
operation
The BBU01 external battery assembly may include
batteries from either of the following suppliers:

- Model PS-1265 from Power-Sonic Corporation,
Redwood City CA, 94032.

- Model EP1265-26 from Elpower Corporation,
Santa Anna, CA 92704

During AC operation, the common equipment

•

provides re-charging current to maintain the voltage
potential of the external battery assembly at an
operational level.

NOTE: The optional external battery assembly

requires approximately ten (10) hours to
completely re-charge to full potential after it has
been completely discharged and, in some
cases, when initially installed.

SYSTEM GROUNDING

The common equipment cabinet has internal
secondary surge protection on all line ports. In order
for this protection to be effective, the cabinet MUST be
connected to a reliable earth ground such as a metal
cold water pipe or a building frame ground. The
grounding wire must be of #10 or #12 insulated, solid
copper and separate from the three-wire AC line cord.
A ground stud is located on the common equipment
cabinet for this purpose. System grounding is
illustrated in Figure 3-2 on page 3-4.

3-3

IMI 66-064 System Description

LINE CONNECTIONS

The common equipment cabinet line terminations are
standard modular plug/jack connections. Each
modular jack (2-6) provides termination for two lines.
Modular jacks 2 and 3 also provide termination for an
auxiliary pair in addition to the two outside lines. CO
line terminations can be at a type 66M-xx connector
block or at individual 6-position modular jacks. Table
3-1 shows the line connection details.

The line cord that is routed between the CO line
termination and the common equipment cabinet
termination should be twisted-pair wiring.

Six-wire twisted pair cable is recommended for wiring
between the CO termination and modular jacks 2 and
3 to provide auxiliary equipment interface wiring. Refer
to page 3-16 for details.

CAUTION

To help ensure that external overvoltage
surges do not damage the system, verify that
gas discharge tubes or similar protection
devices are installed, and properly grounded,
on all connected outside lines.

STATION CONNECTIONS

Connections between the common equipment and

•

the stations for models N0616, N0820, and N1024
are via two type 66M-xx connector blocks which are

cable connected to the common equipment 50-pin
male connectors. Table 3-2a shows the station
connection detais. Station connections for the
model N0308 are via standard modular plug/jack
connections provided on the side of the common
equipment cabinet. These jacks are labeled by
station number. Table 3-2b details these
connections.

The maximum distance allowed from the common

•

equipment to the station when using #24 gauge,
twisted-pair cable is 1500 feet.

NOTE: If spare conductors exist in the cables that are

run between the common equipment 66M-xx
connector blocks and the station jacks, it is a
good practice to connect them to earth ground.
Doing this may help prevent them from
inducing radio frequency and/or AC
interference into the system.

CAUTION

The polarity between the individual wires in a
particular voice or data pair is not critical;
however, do not connect the voice circuits to
the data circuits.

STATION PAIRING

Station ports are paired for both data and overload
protection as follows:

10—11 14—15 18—19 22—23 26—27 30—31
12—13 16—17 20—21 24—25 28—29 32—33

3-4

System Description IMI 66-064

3-5

IMI 66-064 System Description

3-6

System Description IMI 66-064

3-7

3-8

IMI 66-064 System Description

3-9

System Description IMI 66-064

IMI 66-064 System Description

SECTION 2

OPTION INSTALLATION DETAILS

DSS/BLF CONSOLE CONNECTION

The optional DSS/BLF console may be installed at any
station port (except port 10) to work in conjunction with
a companion station connected to the adjacent port
(e.g. port 10 for station and port 11 for console).
Console port installation is illustrated in Figure 3-3a
and 3-3b, shown on the previous pages.

The model EB32X-xx, DB32-xx, DB32S-xx, DB40-xx,
and DB70-xx DSS/BLF consoles are all compatible
with the XE system. The station port to which they are
connected must be programmed as a DSS/BLF
console port as described on page 4-12. The console
buttons are fixed for DSS/BLF operation beginning
with station 10 and ending with the maximum station
number in the system. These buttons also provide
auto dial locations at a second level of storage
(accessed with the HOLD button function).
Additionally, any buttons, from beyond system station
capacity through a maximum of 32, are available as
auto dial locations at the first level of storage. For
example, a model N1024 key system and a EB32X-xx
or DB32-xx console will fix the first 24 console buttons
as DSS/BLF buttons, and provide the remaining eight
buttons as auto dial buttons. Plus, it will provide auto
dial locations at the second level of storage for the first
24 buttons. A total of 32 auto dial storage locations are
provided. For larger consoles, any buttons beyond a
maximum of 32 will still be blanked. For this reason it
is recommended that the larger consoles (DB40 and
DB70) not be used unless absolutely necessary since
the XE system has a maximum station capacity of 24
stations thus leaving these consoles with a large
quantity of blanked buttons.

The installed distance limit between the common

•

equipment and a console is the same as that
specified for a regular station. Connect all four
wires (voice pair and data pair) of the console cable
to the station connector block.

The voice pair connections of the console can be

•

used simultaneously to enable a PA port function or
to provide off-hook voice announce capability..

See information headed External Paging Interface -

•

Station PA Port. If an enable signal is required with
the particular PA equipment being used, the console
and PA equipment connections are limited to station
ports 15 and 17.

The DSS/BLF console port must be programmed as

•

a DSS/BLF port before console operation can take
place.

The console port must be also programmed as a PA

•

port if a PA amplifier has been connected to the
voice pair as part of the system.

OFF-HOOK VOICE ANNOUNCE

WITH HANDSFREE ANSWERBACK

The DB32S-xx Adjunct Feature Module can be used to
provide off-hook voice announcing (OHVA) to a station
already busy on a call and allow subsequent
handsfree answerback (HFAB) by that station user.
The DB32S-xx Module can also be used as a
DSS/BLF console at the same time if desired. The
station port to which the Adjunct Feature Module is
connected must be programmed for the feature that is
required as discussed on page 4-12. When both
DSS/BLF and OHVA operation are required, the
station port to which the console is connected must be
programmed as an Off-Hook Call Announce port.
When only DSS/BLF operation is required, program
the port as a DSS/BLF Console port.

Two data-paired station ports are required to

•

provide the OHVA/HFAB feature.

Connect a telephone to the first data-paired port

•

Connect the DB32S-xx Adjunct Feature Module

•

to the voice pair and the data pair of the second
data-paired port.

3-10

System Description IMI 66-064

SECURE OFF-HOOK VOICE

ANNOUNCE STATION

The XE system supports the Secure Off-Hook Voice
Announce (SOHVA) feature provided by telephones
with the following product codes:

6714X-xx all revs.
6600E-xx Rev. B and later
6614E-xx Rev. D and later
6614T-xx Rev. C and later
6620E-xx Rev. D and later
6620T-xx Rev. I and later

NOTE: If OHVA capability is required, it is provided by

the model DB32S-xx console (adjunct feature
module) as described in the previous
paragraph.

Two data-paired ports are required to provide
SOHVA support. The SOHVA equipped telephones

contain a 6-position, 3-pair line jack. Using 6-wire,
twisted-pair cable, connect the two inside pairs of the
line jack to the first data-paired port and connect the
outside pair to the second data-paired port. Refer to
Figure 3-4 for an illustration of this wiring.

Connect pins 3 and 4 to the voice pair and pins 2

•

and 5 to data pair of the first data-paired port.
Connect pins 1 and 6 to the voice pair of the second

•

data-paired port.

For the feature to be enabled, the first port must be
programmed as a telephone port and the second port
must be programmed as an Off-Hook Call Announce
port as discussed on page 4-12.

3-11

IMI 66-064 System Description

in Figure 3-5. The power failure pair is only active
during an AC power failure. An industry standard

POWER FAILURE STATION

The system provides one tip and ring pair connected
to line one as an emergency, power failure circuit.
This power failure pair is located on Mod jack 1 for all
common equipment models. This jack is the rightmost
jack when facing the right side of the cabinet as shown

single-line telephone, such as a Comdial 2500-xx can
be connected to the power failure pair and used to
provide communications capability should the AC
power to the system beto the power failure pair and
used to provide communications capability should the
AC power to the system be interrupted.

3-12

System Description IMI 66-064

COMMON AUDIBLE AND AUXILIARY

STATION INTERFACE (STATION 17

AUDIBLE)

Two sets of relay closure dry-contact points are
available. These are located at the J-1 and J-2
connector blocks for models N0616, N0820, and
N1024 and at the barrier-type terminal strip on the
model N0308 common equipment cabinet. These
closures track the ringing pattern. They are closed
during the ringing period and open during the silent
period. Figure 3-6 shows connection details for this
feature.

Station 17 Audible: (J-1 connections 49 and 50)

•

provides a dry-contact closure whenever system
station 17 rings.

Common Audible: (J-2 connections 49 and 50)

•

provides a dry-contact closure whenever any of the
TELCO/PBX lines, connected to the common
equipment, ring.

CAUTION

Do not exceed a 1 amp at 24 volts AC or DC
(.5 amp at 48 volts) load on these control
terminals. If the load requirements exceed
this limit, connect the load through an external
slave relay. DO NOT CONNECT THESE

CONTROL TERMINALS DIRECTLY TO THE
117VAC LINE.

3-13

IMI 66-064 System Description

Terminate the audio input of the paging amplifier
with a 600 ohm (nominal value) resistor.

EXTERNAL PAGING INTERFACE -

STATION PA PORT

Any station port can be programmed as a PA port and
used to couple a station voice path to an external
paging amplifier. Refer to Chapter for programming
details. Figure 3-7 shows connection details for this
feature.

The audio input of an external paging amplifier can

•

be connected to the audio pair of the station port at
the J-1 or J-2 connector blocks for models N0616,
N0820, and N1024 or at the barrier-type terminal
strip on the model N0308 common equipment
cabinet.

The audio input connection must be isolated with a

•

600 ohm to 600 ohm audio matching transformer.

If station port 15 is programmed as a PA port,

•

the Common Audible contact points on J-2 are
automatically reconfigured as PA enable terminals.
The contact closure now occurs when PA station 15
is dialed. The normal common audible function is
disabled as long as station 15 is a PA station.

If station port 17 is programmed as a PA port,

•

the Auxiliary Station Interface (station 17 audible)
contact points are automatically reconfigured as PA
enable terminals. The contact closure now occurs
when PA station 17 is dialed. The normal auxiliary
station interface function is disabled as long as
station 17 is a PA station.

3-14

System Description IMI 66-064

EXTERNAL PAGING

INTERFACE - LINE PORT

A line port can be programmed to be an AUXILIARY
port and connected to an external paging amplifier.
Refer to Chapter 4 for programming details. Station
access to this area paging is via the line button for the
AUXILIARY line. Figure 3-8 shows connection details
for this feature.

Connect the audio input of an external paging

•

amplifier to the tip and ring leads of the AUXILIARY
(line) port.

A DTMF tone select, zone-paging amplifier can be

•

employed if desired. If used, the zone-select code
can be dialed after the AUXILIARY line select button
is pressed.

3-15

IMI 66-064 System Description

The system can detect an off-hook condition in the
connected device, and turn on the line status light at

AUXILIARY EQUIPMENT INTERFACE

A non-key system telephone device or a data device
can be connected ahead of the common equipment.
Refer to Table 3-1 on page 3-4 and Figure 3-9 below
for connection details for this feature.

the button system telephones to indicate that the line
is busy.

Connection is across tip and ring of lines 2 and 4

•

using the auxiliary interface connections.
Auxiliary interface connections are provided at

•

terminals 1 and 6 of common equipment modular
jacks 2 and 3.

3-16

System Description IMI 66-064

SECTION 3

CHECKOUT AND FAILURE ISOLATION

INSTALLATION CHECKOUT

RESISTANCE CHECK

Make the following resistance measurements at the
station connector blocks under the following conditions.

AC power cord disconnected from electrical outlet.

•

Common equipment connected to station connector

•

blocks.
Stations wired, and wiring punched down on blocks.

•

Bridging clips removed from blocks to isolate stations

•

from common equipment.

1. Measure the resistance of each installed station and
wiring from the station side of the connector blocks.
Resistance values will vary with cable length and
station type but should be within the following limits.

MEASURED PAIR MEASURED STATION

RESISTANCE IN OHMS

VOICE PAIR 40 - 150

DATA PAIR 0.3 - 100

2. Measure the resistance of the common equipment
and cables from the common equipment side of the
station connector blocks. Resistance values should
be within the following limits.

MEASURED PAIR MEASURED COMMON

EQUIPMENT RESISTANCE
IN OHMS

VOICE PAIR 40 - 50
DATA PAIR 0.3 - 0.5

VOLTAGE CHECK

Refer to Table 3-3 and make the following voltage
measurements at the station connector blocks under
the following conditions:

Bridging clips installed

•

AC power connected to the common equipment

•

Measure the voltage across one voice line and one
data line and then across the other voice line and
the other data line for each even and odd station.
The measured voltage must be as follows:

GENERAL CHECK

1. Check the red light emitting diode (LED) system
status indicator. Be sure that it is on steady. If it
is off or flashing, disconnect and reconnect the
AC power plug.

2. Refer to the station User’s Guide for operating
information. Perform a general operational test of
the system by exercising the system features
from station port 10.

Table 3-3 Voltage Measurements

UNIT UNDER TEST

66-M-xx BLOCK

CONNECTION
TYPICAL EVEN Voice 1 (+)
STATION Data 3 (-) +34 (+/-8) VDC
(Repeat for Voice 2 (+)
each even station) Data 4 (-) +34 (+/-8) VDC
TYPICAL ODD Voice 5 (+)
STATION Data 7 (-) +34 (+/-8) VDC
(Repeat for Voice 6 (+)
each odd station) Data 8 (-) +34 (+/-8) VDC
Variant readings can indicate a possible wiring, station, or common equipment
problem.

3-17

METER LEAD
POLARITY

MEASURED
VOLTAGE

IMI 66-064 System Description

FAILURE ISOLATION

SYSTEM STATUS INDICATOR

The red LED located near the fuse holder is the
system status indicator. This indicator should turn on
steady when AC power or the optional external battery
power is applied to the common equipment. If the
indicator flashes after power up, it could be indicating
a processor failure. Unplug and reconnect the AC
power, and observe the LED indication. If it still shows
a flashing indication, equipment replacement may be
necessary. A flashing indicator when battery power is
being employed is an indication of battery discharge.

STATION SELF TEST

1. Disconnect the line cord at the station base.
NOTE: The adjacent odd or even station will be

disabled during the time that the station line
cord is being disconnected and reconnected..

2. Press and hold the MUTE button, and reconnect
the line cord to the station connector. The station
will automatically perform a self test routine.
Release the MUTE button as soon as the test
begins. The sequence of the test is as follows:

The indicators will light in sequence.

•

Indicators will then turn off in an orderly

•

sequence.
The ringer will sound - Be sure that the ringer

•

volume control is set to the medium or high
volume setting. On some telephone models, the

ringer may sound before the indicators are turned
off.

3. Replace any station that does not pass the self test.

DSS/BLF CONSOLE SELF TEST

1. Disconnect the console line cord plug from the line.

2. Press and hold the station 10 select button while
reconnecting the line cord plug to the line.

NOTE: The companion station will be disabled during

the time that the console is being disconnected
and reconnected.

3. Release the station 10 select button, and note that
the BLF indicators will each turn on in sequence
beginning with the station 10 indicator. The
indicators will then turn off and the console will
become operational.

FAILURE INDICATIONS

If erratic light indications or ring signals occur at a
paired station, an open data pair at either station may
be the fault.

A station with an open data line may work properly

•

on a short loop but fail on a long loop.

Stations are paired for overload current protection. If a
fault occurs which causes more than 300 ma. of
current to be drawn, the paired stations are disabled
by circuit action.

Disconnect the disabled stations and reconnect them
one at a time to isolate the faulty one.

3-18

System Description IMI 66-064

SECTION 4

INSTALLER/USER INFORMATION

REGARDING FCC RULES AND REGULATIONS

This electronic button system complies with Federal
Communications Commission (FCC) Rules, Part 68.
The FCC registration label on the KSU contains the
FCC registration number, the ringer equivalence
number, the model number, and the serial number or
production date of the system.

NOTIFICATION TO TELEPHONE
COMPANY

Unless a telephone operating company provides and
installs the system, the telephone operating company
which provides the lines must be notified before a
connection is made to them. The lines (telephone
numbers) involved, the FCC registration number, and
the ringer equivalence number must be provided to the
telephone company. The FCC registration number
and the ringer equivalence number of this equipment
are provided on the label attached to the KSU.The
user/installer is required to notify the telephone
company when final disconnection of this equipment
from the telephone company line occurs.

COMPATIBILITY WITH TELEPHONE
NETWORK

When necessary, the telephone operating company
provides information on the maximum number of
telephones or ringers that can be connected to one
line, as well as any other applicable technical
information. The telephone operating company can
temporarily discontinue service and make changes
which could affect the operation of this equipment.
They must, however, provide adequate notice, in
writing, of any future equipment changes that would
make the system incompatible.

INSTALLATION REQUIREMENTS

Connection of the electronic button system to the
telephone lines must be through a universal service
order code (USOC) outlet jack supplied by the
telephone operating company. If the installation site
does not have the proper outlet, ask the telephone
company business office to install one. The correct
outlet jack for this system is either a type RJ21X or
type RJ14C.

PARTY LINES AND COIN LINES

Local telephone company regulations may not permit
connections to party lines and coin lines by anyone
except the telephone operating company.

TROUBLESHOOTING

If a service problem occurs, first try to determine if the
trouble is in the on-site system or in the telephone
company equipment. Disconnect all equipment not
owned by the telephone company.
If this corrects the problem, the faulty equipment must
not be reconnected to the telephone line until the
problem has been corrected. Any trouble that causes
improper operation of the telephone network may
require the telephone company to discontinue service
to the trouble site after they notify the user of the
reason.

REPAIR AUTHORIZATION

FCC regulations do not permit repair of customer
owned equipment by anyone except the manufacturer,
their authorized agent, or others who might be
authorized by the FCC. However, routine repairs can
be made according to the maintenance instructions in
this publication, provided that all FCC restrictions are
obeyed.

RADIO FREQUENCY INTERFERENCE

The electronic button system contains incidental radio
frequency generating circuitry and, if not installed and
used properly, may cause interference to radio and
television reception. This equipment has been tested
and found to comply with the limits for a Class A
computing device pursuant to Subpart J of Part 15 of
FCC Rules. These limits are designed to provide
reasonable protection against such interference when
operated in a commercial environment. Operation of
this equipment in a residential area may cause
interference to radio and television reception; in which
case the user is encouraged to take whatever
measures may be required to correct the interference.
If this equipment does cause interference to radio or
television reception, which can be determined by
turning the equipment off and on, the user is
encouraged to try to correct the interference by one or
more of the following measures: Reorient the
television or radio’s receiving antenna, and/or relocate
the KSU, the individual telephone stations, and the
radio or TV with respect to each other. If necessary,

3-19

IMI 66-064 System Description

the user should consult the manufacturer or an
experienced radio/television technician for additional
suggestions. The user may find the following booklet
prepared by the Federal Communications Commission
helpful: “How to Identify and Resolve Radio-TV
Interference Problems.” This booklet is available from
the Government Printing Office, Washington D.C.

20402. Stock No. 004-000-00345-4.
This digital apparatus does not exceed the (Class A)

limits for radio noise emissions from digital apparatus
set out in the Radio Interference Regulations of the
Canadian Department of Communications.

Le présent appareil numérique n’émet pes de bruits
radioélectriques dépassant les limites applicables aux
appareils numériques (de la class A) prescrites dans le
Réglement sur le brouillage radioélectrique édicté par
le ministére des Communications du Canada.

RINGER EQUIVALENCE NUMBER

The REN of each line is 0.4B. The FCC requires the
installer to determine the total REN for each line, and
record it at the equipment.

3-20

System Description IMI 66-064

CHAPTER 4

SYSTEM PROGRAMMING

SECTION 1

INTRODUCTION

System programming is divided into three categories:

Class Of Service Programming: The class of

•

service programming is unlimited as to the features
that can be programmed using it. Class of service
programming is usually performed by the installer
when the system is first put in service.

Administration Programming: The administration

•

programming can be used to program all system
features except line attributes. This procedure is
usually employed by on-site administration
personnel whenever system needs dictate.

Attendant Programming: The attendant

•

programming is limited to those features which may
need re-programming by the attendant on a daily
basis such as:

night transfer of ringing

•

music on hold

•

system speed dial numbers.

•

All programming is performed at station port 10 by
dialing special codes and pressing special buttons as
detailed in this chapter. Figure 4-1 illustrates the
button locations for applicable telephone models.
Figure 4-2 shows a block diagram illustration of the
system programming.

It is recommended that a 14-line monitor telephone
(such as mfg. code 6714X) be used for programming
since it provides all needed program buttons and LED
indicators for program status feedback.

It is not recommended that the 6-line monitor
telephone (mfg. code 6706X) be used for
programming unless all of the installed system
telephones are mfg. code 6706X telephones. If this
telephone is used for programming the following
special considerations must be noted:

Program button B1 = A5 and button B2 = A12 for all

•

COS programming requirements except button
mapping. When button mapping is performed on B1
and B2, with a line assignment represented by A5
(line 5) or A12 (line 12), press B1 or B2 twice. The
first press represents the button location. The
second press represent the line assignment.

Program buttons A6 and A13 cannot be

•

represented on the mfg. code 6706X telephone.

Programming can also be performed with an
ExecuTech LCD speakerphone mfg. code: 6600E-xx.
When this telephone is employed, the display shows
the name of each class of service feature as it is being
programmed. Programming can also be performed
with an ExecuTech multiline telephone (such as
models 6614E, 6614T, 6620E or 6620T).

Programming overlays for all applicable telephone
models are included at the end of this chapter.

4-1

4-2

IMI 66-064 System Description

4-3

System Description IMI 66-064

4-4

IMI 66-064 System Description

System Description IMI 66-064

SECTION 2

CLASS OF SERVICE PROGRAMMING

Class of service programming is usually performed by
the system installer. Class of service programming
procedures provide the means for programming all of
the system variables including the master clear. The
installer may elect to program only the line attributes
and allow the remainder of the system variables to
remain set to their default values.

Perform class of service programming as shown
below.

System administration programming can be
performed by on-site personnel to change all system
variables, except master clear and line attributes, to
match site requirements.

4-5

4-6

IMI 66-064 System Description

4-7

System Description IMI 66-064

4-8

IMI 66-064 System Description

4-9

System Description IMI 66-064

4-10

IMI 66-064 System Description

4-11

System Description IMI 66-064

4-12

IMI 66-064 System Description

4-13

System Description IMI 66-064

4-14

IMI 66-064 System Description

4-15

System Description IMI 66-064

4-16

IMI 66-064 System Description

4-17

System Description IMI 66-064

IMI 66-064 System Description

SECTION 3

ATTENDANT PROGRAMMING

Attendant programming ican be performed by from
Station 10 at any time during system operation.

NIGHT TRANSFER

(of ringing)

The day, or normal, ringing of incoming lines can be
transferred to a particular station or stations by the
attendant for off-hour or special purpose answering.

1. Press ITCM * #.

2. Dial 03.

3. Press prog.button A1 to toggle feature on or off.
The light next to program key A1 wil turn on when
night transfer is active and ITCM light will flash.

4. Press * for next feature or press MNTR (SPKR) to
end.

MUSIC ON HOLD

Music is provided to outsinde lines that are placed on
hold if an external music source is connected to the
system. Music on hold can be disabled by attendant
action.

1. Press ITCM * #.

2. Dial 04.

3. Press prog.button A1 to toggle feature on or off.
The light next to program key A1 wil turn on when
night transfer is active and ITCM light will flash.

4. Press * for next feature or press MNTR (SPKR) to
end.

SYSTEM SPEED DIALING

A special system-wide list of numbers can be
programmed for automatic dialing by all users.

1. Press ITCM *#.

2. Dial 02.

3. Dial location (01 -30). Listen for tone bursts.

4. Press line button for preselect. (If desired).

NOTE: When no line is preselected and the system

speed dial is ued, the system will autmatically
pick the prime line assigned to the station (if
enabled) or pick the most previously used line
at that station.

5. Dial number (up to 15 digits).

6. Press TRANS/CONF button for next location and

repeat procedure.

-OR-

Press SPKR to end.

-OR-

7. Press TRANS/CONF button, then press * for next

feature.
8 Press * for next feature or or press MNTR (SPKR)

to end.

LOC NUMBER LOC NUMBER LOC NUMBER
01 11 21
02 12 22
03 13 23
04 14 24
05 15 25
06 16 26
07 17 27
08 18 28
09 19 29
10 20 30

SYSTEM CLOCK

If the system has been modified to provive LCD
speakerphone support, the system clock can be
programmed to maintain current date and time
information. The display will not show the date and
time until this feature is programmed as follows:

1. Press ITCM *#.

2. Dial 01.

3. Dial two digits (00-99) for year.

4. Dial two digits (01-12) for month.

5. Dial two digits (01-31) for day.

6. Dial two digits (00-23) for hour.

7. Dial two digits (00-59) for minute.

8. Dial one digit (1-7) for day of week.

SUN=1,SAT=7

9. Press * for next feature or press MNTR (SPKR) to

end.

4-18

System Description IMI 66-064

CHAPTER 5

SYSTEM OPERATING PROCEDURES

SECTION 1

STATION OPERATION

ANSWERING CALLS

ANSWERING OUTSIDE CALLS

Calls appear at buttons that have actual line
assignments.

Press line button of ringing line (line button with

•

flashing light).
Lift handset.

•

NOTE: If a prime line is assigned and is ringing, or if

the telephone can answer any ringing line
(ringing line preference enabled), do not press
the line button of the ringing line.

ANSWERING INTERCOM CALLS

To answer a voice call,

Speak toward the telephone.

•

Lift handset if privacy is desired.

•

NOTE: Voice calling can be blocked. See the

discussion titled, Voice Announce Blocking for
details.

To answer a tone call,

Lift handset to talk.

•

CALL PICKUP ANSWERING

DIRECT

To answer a call that is ringing at another
telephone,

Lift handset.

•

Press ITCM.

•

Dial *4.

•

Dial extension number of ringing telephone.

•

SYSTEM-WIDE

To answer a call that is ringing at any station in
system,

Lift handset.

•

Press ITCM.

•

Dial #4.

•

HANDSFREE ANSWERBACK (HFAB)

While a station is busy on a call, an off-hook voice
announcement may be received either as a
non-secure off-hook voice announcement (OHVA) or
as a secure off-hook voice announcement (SOHVA).
An OHVA announcement is sounded through the
loudspeaker of a paired 32-button console (model
DB32S-xx adjunct feature module). A SOHVA
announcement is sounded through the handset
receiver of certain model multiline telephones.

Neither OHVA nor SOHVA calls will be received at
stations that have the voice announce blocking feature
enabled (see page 5-5).

To respond to an OHVA announcement,

Hear ring burst.

•

Hear alerting tone (several quick tone bursts) and

•

announcement sounded from loudspeaker in
adjunct feature module.

Speak toward microphone opening in front edge of

•

the adjunct feature module housing to reply.

NOTE The distant party cannot be prevented from

overhearing the announcement; however, the
user can press and hold the MUTE button to
prevent the distant party from hearing the
response.

To respond to a SOHVA announcement,

Hear ring burst.

•

Hear tone alert and announcement in handset

•

receiver. Distant party cannot hear announcement.
Press and hold MUTE button, and reply by speaking

•

into handset transmitter. Distant party cannot hear
response.

5-1

IMI 66-064 System Description

MAKING CALLS

OUTSIDE LINE CALLING

Press line button to select line.

•

NOTE: Selecting a line is not necessary if:
A priority line has been assigned to a telephone (prime

line feature enabled).
The telephone automatically picks an idle line for use

when the handset is lifted (idle line preference feature
enabled).

Listen for dial tone.

•

Dial number.

•

When party answers,

Lift handset.

•

To end call,

Hang up handset.

•

I

NTERCOM CALLING

Intercom calls may be manually dialed or automatically
dialed using a pre-programmed Direct Station
Selection (DSS) button.

VOICE CALLING
To voice call an intercom station,

Lift handset.

•

Press ITCM.

•

Dial extension number. (To call system operator,

•

dial 0.)
Speak to called party.

•

To voice call a DSS number,

Lift handset.

•

Press programmable button that is programmed for

•

desired station.
Speak to called party.

•

NOTE: The outside line is automatically placed on

hold when a DSS button is pressed or when
the ITCM button is pressed prior to manually
dialing an intercom extension number.

TONE CALLING
To tone call an intercom station,

Lift handset.

•

Press ITCM.

•

Dial extension number.

•

Press ITCM again. Called telephone will ring.

•

NOTE: Some systems may be programmed to tone

signal as the first option. Pressing ITCM a
second time is not necessary in this case

To tone call a DSS number,

Lift handset.

•

Press programmable button that is programmed for

•

desired station.
Press ITCM. Called telephone will ring.

•

NOTE: The lights (LEDs) adjacent to programmable

buttons indicate status of DSS telephones:
DARK indicates idle telephone, STEADY-ON
indicates telephone in use. FLASHING
indicates station is ringing.

MAKING OHVA/SOHVA CALLS

To make a voice announcement to another station that
is busy on a call,

Lift handset.

•

Make intercom call.

•

Hear warning tone (several quick tone bursts), and

•

make announcement.
Wait on line for reply.

•

NOTE: The announcement may be received as an

off-hook voice announcement (OHVA) or as a
secure off-hook voice announcement
(SOHVA). The method in which the
announcement is received is not controlled by
the caller. Rather, it is dependent upon the
type of equipment being used at the called
station, how that equipment is wired, and class
of service programming. A multiline telephone
and DB32S-xx console (adjunct feature
module) combination can receive an OHVA call
but cannot receive a SOHVA one. Certain
multiline telephones can receive calls in a
SOHVA manner without the companion
console but cannot receive calls in an OHVA
manner. Neither OHVA nor SOHVA calls can
be made to stations that have the voice
announce blocking feature enabled (see page
5-5).

5-2

System Description IMI 66-064

SPEED DIALING

To dial station speed dial numbers,

Press keypad digit 0-9for desired personal speed

•

dial number.

-OR-

If on line listening to dial tone,

Press HOLD and then press desired

•

keypad digit 0-9.

To dial system speed dial numbers,

Press S.

•

Press keypad digits 01 - 30 for desired system

•

speed dial number.

-OR-

If on line listening to dial tone,

Press HOLD S and then press desired

•

keypad digits 01-30.

AUTOMATIC DIALING

To automatically dial numbers,

Press desired programmable button.

•

If desired programmable button is also programmed

•

for DSS (one-button intercom) calling, press HOLD
and then press desired programmable button.

NOTE: Some telephone models provide an A16 button

as part of the A-field buttons. This A16 button
provides an automatic redial function as a fixed
feature. Operation of this fixed automatic redial
button is the same as that given for the
programmed automatic redial button.

If call is answered,

Take control by lifting handset. If control is not

•

taken, call will drop.

To cancel automatic redial,

Press automatic redial button, lift and replace

•

handset, or press any station button.

NOTE: Any user-originated station activity during

automatic redial will cancel the feature.

LAST NUMBER REDIAL

The last number previously dialed can be
automatically redialed with one-button or two-button
action.

Dial #. (If on-line listening to dial tone, press HOLD

•

then dial
Listen for ringing or busy tone.

•

- Ringing tone: When party answers, lift handset.

- Busy tone: Press MNTR (SPKR) to disconnect.

#.)

AUTO-SAVE

The last manually dialed number can be automatically
saved for later redial. As many numbers may be
saved as there are blank programmable buttons
available: however, the automatic saving of a number
where one is already saved will result in the
over-writing of the original saved number.

To auto-save a manually dialed number,

Lift handset or press MNTR (SPKR).

•

Press line select button (if idle line preference is not

•

enabled) to select line.
Dial number from keypad.

•

AUTOMATIC REDIALING

To activate automatic redial,

Press programmable button pre-programmed for

•

that purpose.
Number will be dialed once a minute for ten

•

minutes.

If called number is busy,

Press automatic redial programmable button to

•

immediately start the redial cycle.

If you wish to save number,

Press desired programmable button to auto-save

•

number.
Hang up.

•

To dial an auto-save number,

Press line select button (if idle line preference is not

•

enabled) to select line.
Press auto-save button. Number is automatically

•

dialed.

5-3

IMI 66-064 System Description

EXTENDED DTMF

The length of the DTMF tone can be extended from
the standard length to a pre-programmed longer
length.

To extend tone length,

Take station off-hook (lift handset).

•

Press line button to select line if not automatically

•

selected by going off-hook.

HOLDING CALLS

MANUAL HOLD

To place call on hold while on line,

Press HOLD.

•

To retrieve held call,

Press line button with flashing light.

•

Press TAP if station does not have line appearance.

•

-OR-

Wait 10 seconds, and dial number. System will then

•

generate long DTMF tones when dialing

-OR-

Immediately press HOLD, then press line button of

•

selected line to set the system to generate long
DTMF tones without waiting for delay conversion.

To alternate between long length and standard
length DTMF tones during a call,

Press HOLD, then press line button for selected

•

line.

EXCLUSIVE HOLD (Only your telephone can
retrieve held call.)

Press HOLD twice.

•

HOLD RECALL FEATURE

After a preprogrammed length of time, a call placed on
hold will automatically ring back to the telephone that
placed it on hold. If the call is on exclusive hold, it will
revert to manual hold after the hold recall time period.
The call can then be retrieved by anyone with that line
appearance.

TRANSFERRING OUTSIDE CALLS

SCREENED TRANSFER

To transfer an outside call to another station in the
system,

Answer outside call (Do not press HOLD.)

•

Press TRANS/CONF. (Outside call is placed on

•

hold automatically.)
Dial extension number of party to be transferred to

•

(or press DSS button for one-button intercom
calling).

When intercom party answers, announce call and

•

line number.
Hang up handset.

•

If the called party is busy or does not answer,

Press TAP or flashing line button to retrieve call.

•

UNSCREENED TRANSFER

To transfer an outside call to another station in the
system,

Answer outside call. (Do not press HOLD.)

•

Press TRANS/CONF. (Outside call is placed on

•

hold automatically.)
Dial extension number of party to be transferred to

•

(or press DSS button for one-button intercom
calling).

Hang up handset.

•

NOTE: If the station to which an unscreened transfer is

made is busy, the transferred call will camp-on
at the station. The call will automatically ring
the station when it become idle. If a transferred
call is not answered after a preprogrammed
time, it will ring back to the transferring station.

To answer recall of transferred call,

Press TAP button.

•

5-4

System Description IMI 66-064

CONFERENCING

Conference transmission levels are not compensated
and are dependent upon the quality of the external
lines.

MULTILINE CONFERENCE

(2 external parties, 1 internal party)
To set up a multiline conference,

Establish first outside call. (Do not press HOLD.)

•

Press TRANS/CONF. (Outside call is placed on

•

hold automatically.)
Establish second outside call. (Do not press HOLD.)

•

Press TRANS/CONF. Conference is established.

•

To drop one conferee and remain active in
conference with other conferee,

Press HOLD. Both lines placed on hold.

•

MESSAGING

MESSAGE WAITING CONTROL

The message waiting light at any telephone can be
turned from another telephone to alert the user that a
message awaits pickup.

To turn on MW light,

Press ITCM.

•

Dial S 3.

•

Dial extension number of station to be alerted. (The

•

MW light of called station will flash.)

To turn off MW light,

Press ITCM.

•

Dial #3.

•

Press line key of party to be dropped.

•

Press and release hookswitch.

•

Press line key of party to be retained.

•

Resume conversation.

•

ADD-ON CONFERENCE

(1 external party, 2 internal parties)

Establish outside call.

•

Press TRANS/CONF (outside call placed on hold

•

automatically).
Dial extension number of intercom party.

•

Wait for answer.

•

Press TRANS/CONF (a three-way connection is

•

established).

Dial extension number of station that was alerted.

•

(The MW light of called station will turn off.)

To turn off MW light while delivering message,

Press HOLD.

•

To receive message at an alerted station,

Observe flashing MW light.

•

Lift handset.

•

Press ITCM HOLD.

•

Connection to message depositor is automatic.

•

To block voice calls,

Press ITCM.

•

Dial S 2.

•

Hang up.

•

VOICE ANNOUNCE BLOCKING

To un-block voice calls,

Press ITCM.

•

Dial # 2.

•

Hang up.

•

5-5

IMI 66-064 System Description

LINE MONITORING

To activate while on a call,

Press MNTR (SPKR). Monitor light will turn on.

•

Hang up handset.

•

NOTE: If a distant party places the call on hold, the

station user can monitor in a handsfree

RECALL/FLASH

FLASH

PBX, CENTREX and custom calling services may
require this feature.

If a system has been configured for flash,

Press TAP to generate a timed flash signal.

•

To cancel,

•

•

RECALL

This feature provides disconnect and dial tone recall.

If a system has been configured for recall,

•

NOTE: A system can be configured for either flash or

PAGING

manner until the party returns, and then lift the
station handset to resume the call.

Lift handset to resume conversation

-OR-

Press MNTR (SPKR) to disconnect. Monitor light
will turn off.

Press TAP to disconnect current call and receive a
new dial tone for another call.

recall but not for both.

EXTERNAL PAGING

(Requires external paging unit)

Press line button dedicated to paging.

•

ALL-CALL AND ZONE PAGING

To page,

DO NOT DISTURB

To silence a station ringer and appear busy to
intercom calls,

Press MNTR (SPKR). (Associated light will turn on).

•

Lift handset.

•

Press ITCM.

•

Dial zone number - (4, 5, 6,or7 for all-call).

•

Make announcement.

•

Hang up handset or wait on line for an answer.

•

NOTE: The calling party will hear two quick tone bursts

every three seconds. The feature cannot be
overridden by the calling party.

To cancel,

Press MNTR (SPKR) again. (Associated light will

•

turn off.)

5-6

System Description IMI 66-064

MUTE / HANDSFREE ANSWER INHIBIT

The MUTE button is in a non-latching mode when the
station handset is lifted and in a latching mode when
the station is operated in a handsfree manner.

To prevent distant party from hearing while
handset is lifted,

Press and hold MUTE. Speaker light will flash.

•

PULSE/TONE SWITCHING

If the local telephone service is pulse (rotary) but
tone generation is required during the call, convert
to tone while dialing as follows:

Press # at point in dialing sequence where

•

conversion to tone is required. (System will switch
back to pulse dialing when call is ended.)

PERSONAL RINGING TONES

A station user can select one of four different ringing
tones for use at a station.

Press ITCM SS.

•

Dial 4.

•

Dial 1, 2, 3,or4 (selects tones 1, 2, 3, or 4).

•

To resume two-way conversation,

Release MUTE. Speaker light will turn off.

•

To inhibit handsfree answer of intercom calls,

Press and latch MUTE. Speaker light will flutter.

•

To enable handsfree answer of intercom calls,

Press and release MUTE. Speaker light will turn off.

•

NOTE: Pulse/Tone switching can be stored at a

programmable button by pressing # during
number storage.

FREQUENCY WARBLE

TONE PAIR RATE

TONE 1 509/610 Hz 10 Hz
TONE 2 763/1016 Hz 10 Hz
TONE 3 509/610 Hz 19 Hz
TONE 4 763/1016 Hz 19 Hz

BACKGROUND MUSIC

Music must be supplied by the system before it can be
turned on at a telephone. Background music, when
supplied, automatically turns off during calls.

To turn music on,

Press ITCM.

•

Dial S 1. (SPKR light will turn on.)

•

Adjust loudness of music with call monitor speaker

•

volume control.

To turn music off,

Press ITCM.

•

Dial # 1. (SPKR light will turn off.)

•

5-7

IMI 66-064 System Description

SPEAKERPHONE OPERATION

(ExecuTech Model 6600S-xx and 6600E-xx Telephones Only)

The optional speakerphone can exercise the
previously described features in a handsfree manner.
Handsfree calling and call answering is as described
below.

To place a call,

Press line button or ITCM.

•

Dial number or press programmable button.

•

When party answers, speak toward the telephone.

•

To answer a call,

Press a line button.

•

STATION USER PROGRAMMING

AUTODIAL PROGRAMMING

Autodial numbers can be stored at any programmable
button locations that do not have a line assigned to
them. They can also be programmed as a secondary
function at every DSS/BLF memory location. Console
buttons that are fixed for DSS/BLF operation also
provide autodial locations at a second level of storage.
Plus any available buttons between the system station
capacity through a maximum of 32 are available as
autodial locations at the first level of storage.

Typical autodial numbers are: frequently dialed
telephone numbers or extension numbers, or
frequently used host system or key system feature
codes. When programming an autodial number, first
decide over which circuit the call must be made. Then,
determine the digits that normally have to be manually
dialed to reach the called party or feature. This circuit
selection and digit sequence can be stored as an
autodial for later one or two-button access. If line
pre-selection is not programmed, the system will
automatically pick the prime line assigned to the
telephone (if enabled), or pick the last used line at that
station and place the call over that selection.

To program autodial numbers,

Press ITCM SS1.

•

Press desired programmable button. Listen for fast

•

tone bursts.
Press specific line button or ITCM button to store

•

line or intercom preselection if desired (optional).

Speak toward the telephone.

•

To end a call,

Press SPKR.

•

To switch from speakerphone to handset,

Lift handset.

•

To switch from handset to speakerphone,

Press SPKR.

•

Hang up handset.

•

Dial the number sequence to be stored. (Up to 15

•

digits can be stored. Valid digits include 0-9, #, and
*.)

To store a pause if required, press HOLD.

•

To store a hookflash if required, press TAP.

•

To store another number,

Press TRANS/CONF.

•

Press next programmable button.

•

Make line or intercom preselection if desired

•

(optional).
Dial number for storage.

•

Repeat this procedure until all desired numbers are

•

stored.

To store autodial number at DSS programmed
button,

Press TRANS/CONF.

•

Press desired DSS button (see page 5-9 for DSS

•

button programming).
Make line or intercom preselection if desired

•

(optional).
Dial number for storage

•

Repeat this procedure until all desired numbers are

•

stored.

To end autodial programming,

Press MNTR (SPKR).

•

5-8

System Description IMI 66-064

STATION SPEED DIAL PROGRAMMING

Station speed dial numbers can be stored by the
station user for later redial. The storage locations are
keypad digits 0 through 9 on the station. Before
attempting to program, decide on the following items:
(1) the number or feature to be stored, (2) which
storage location will be used (0 - 9), (3) the circuit that
the call will go over (individual line or intercom).

To program numbers,

Press ITCM SS2.

•

Dial a memory location (0 through 9).

•

Press specific line button or ITCM button to store

•

line or intercom preselection if desired (optional).
Dial the number sequence to be stored. (Up to 15

•

digits can be stored. Valid digits include 0-9, #, and
*.)

To store a pause if required, press HOLD.

•

To store a hookflash if required, press TAP.

•

Example: Store a telephone number under

location 0. The sample number is

1(804)555-2222. Program it as follows:

ITCM, *, *, 2, 0, Line Button, 1, 8, 0, 4, 5, 5, 5, 2,

2, 2, 2.
To store another number,

Press TRANS/CONF.

•

Press next speed dial location.

•

Make line pre-selection if desired.

•

Dial number for storage.

•

Repeat this procedure until all desired numbers are

•

stored.

To end station speed dial programming,

Press MNTR (SPKR).

•

DIRECT STATION SELECTION/BUSY
LAMP FIELD (DSS/BLF) PROGRAMMING

One-button intercom calling with visual indication of
telephone status can be programmed at telephone
buttons not assigned to lines. The DSS/BLF console
buttons are fixed by the system for DSS/BLF operation
beginning with station 10 and ending with the
maximum station number in the system.

To program DSS,

Press ITCM ** 3.

•

Press button to be programmed as DSS button.

•

Dial extension number.

•

Repeat last two steps for all desired extension

•

numbers.

To end DSS programming,

Press MNTR (SPKR).

•

NOTE: An autodial number can also be

programmed as a secondary function at
every DSS/BLF memory location. See
Automatic Dialing instructions for
programming details.

AUTOMATIC REDIAL BUTTON
PROGRAMMING

The system will allow the last previously dialed
number to be automatically and repeatedly redialed for
approximately ten minutes. A button must be
programmed to provide this feature.

To program a programmable button for use as an
automatic redial button,

Press ITCM SS1.

•

Press desired programmable button.

•

Press #.

•

Press MNTR (SPKR).

•

5-9

IMI 66-064 System Description

SECTION 2

ATTENDANT STATION OPERATION

SYSTEM CLOCK

If the system has been modified to provide LCD
speakerphone support, the system clock can be
programmed to maintain current date and time
information in the display. The clock information is not
displayed until the feature is programmed.

1. Press ITCM.

2. Dial * #01.

3. Dial two digits (00-99) for yr.

SYSTEM SPEED DIAL PROGRAMMING

A special system-wide list of numbers can be
programmed for automatic dialing by all users.

1. Press ITCM

2. Dial * #02.

3. Dial 01 - 30 to chose storage location. Listen for
tone bursts.

4. Press specific line button or ITCM button to store
line or intercom preselection if desired (optional).

NOTE: When no line is preselected and the system

speed dial is used, the system will

NIGHT TRANSFER (of ringing)

4. Dial two digits (01-12) for mo.

5. Dial two digits (01-31) for day.

6. Dial two digits (00-23) for hr.

7. Dial two digits (00-59) for min.

8. Dial one digit (1-7) for day of week (Sun.=1, Sat.=7)

9. Press MNTR (SPKR) to end.

automatically pick the prime line assigned to
the station (if enabled) or pick the most
previously used line at that station.

5. Dial the number to be stored (15 digits maximum).
Press HOLD to store pause (if required).

•

Press TAP to store flash (if required).

•

6. Press TRANS/CONF to save number.

7. Repeat steps3-7tostore next number.

8. Press MNTR (SPKR) to end.

The day, or normal, ringing of incoming lines can be
transferred to a particular station or stations (chosen
through class of service programming) for off-hour or
special-purpose answering. Additionally, stations can
be arranged through class of service programming, to
be able to answer any ringing outside line.

1. Press ITCM.

2. Dial * #03.

MUSIC ON HOLD

Music that is provided to outside lines while they are
on hold can be disabled and enabled by attendant
action.

1. Press ITCM.

2.

Dial *

# 04.

3. Press A1 (top, left-hand programmable button) to

toggle feature on or off. Associated light will turn on
when night transfer is active and turn off when it is
inactive.

4. Press MNTR (SPKR) to end.

NOTE: When this feature is on, the ITCM light will

flash.

3. Press A1 (top, left-hand programmable button) to

toggle feature on and off. Associated light will turn
on when music on hold is provided and turn off
when it is disabled.

4. Press MNTR (SPKR) to end.

5-10

IMI 66-064 System Description

5-11

IMI 66-064 System Description

SECTION 4

SYSTEM OPERATING CHARACTERISTICS

FEATURE DIALING CODE NUMBERING PLAN

5-12

System Description IMI 66-064

RINGER VOLUME CONTROL

Each station has a ringer volume control. Depending
upon the model, the ringer control is located on the
front edge, rear edge, or bottom of the telephone.
Adjust the control lever to OFF, LOW or HIGH volume
as desired.

STATUS INDICATORS AND TONE

SEQUENCES

The following pages describe the light and ring
patterns associated with system operation.

NOTE: The values shown are typical. They are

provided for illustration purposes only.

5-13

5-14

IMI 66-064 System Description

5-15

System Description IMI 66-064

5-16

IMI 66-064 System Description

5-17

System Description IMI 66-064

5-18

IMI 66-064 System Description

5-19

System Description IMI 66-064

5-20

IMI 66-064 System Description

5-21

System Description IMI 66-064

System Description IMI 66-064

CHAPTER 6

MAINTENANCE

TECHNICAL ASSISTANCE

AND REPAIR SERVICE

TECHNICAL ASSISTANCE

Should you experience difficulty with installation,
checkout, or programming, and have made an attempt
to isolate the problem using information provided
herein; or should you encounter problems at a later
date which cannot be resolved by referring to this
manual, call the Comdial Technical Service staff.
They can be reached at 1-800-366-8224 between the
hours of 8:00 AM and 8:00 PM Eastern time,
Monday through Friday.

When calling for technical assistance, you should be at
the job site and you should have in your possession,
as a minimum, an accurate volt-ohm meter and a copy
of this manual.

REPAIR SERVICE

If your common equipment cabinet or an individual
station needs repair, it may be returned to Comdial.
Comdial will, at their option, either repair the defective
equipment or replace it with a remanufactured unit.
This repair will be done for a fixed charge. For
information on this charge, please call or write to the
address given below.

Comdial

P.O. Box 7266
Charlottesville, VA 22906
Attention: Repair Department
Telephone: [phone]

When returning equipment for repair, pack it carefully
to prevent damage. Any damages during shipment
will be the responsibility of the purchaser. The
equipment should be shipped freight or postage
prepaid. The shipping address is:

Comdial

1180 Seminole Trail
Charlottesville, VA 22901
Attention: Repair Department

FUSE LOCATION

The system is protected against short circuit damage
by a 1 amp slow-blow fuse located on the left side of
the common equipment cabinet. Always replace the
fuse with one of the same value and type, otherwise,
equipment damage could result.

WIRING

Refer to Chapter 2, Section 3, Checkout and Failure
Isolation, for instructions for testing the system wiring

and components for possible failure.

6-1

Publcatiion Index IMI 66-064

I-1

IMI 66-064 Publication Index

I-2

Publication Index IMI 66-064

I-3