Inter-Tel IMX 256, GMX 256 User Guide

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Page 1

INT

EGR

INSTALLATION AND FIELD MAINTENANCE MANUAL

Part No. 440.8074

Issue

November 1994

Page 2

INSTALLATION AND FIELD

MAINTENANCE MANUAL

NOTICE

IMX

With the new 1995 North American Numbering Plan software releases, the tical except for the station instruments that can be installed on them. To provide better service, condense reference materials, streamline training, and facilitate technical support, the installation manuals for the two systems have been combined into one generic manual.

When using this combined manual to help sell, install, or service a particular system, be aware that not all of the station instruments described in this manual are available on both products. Listed below are the station instruments that can be installed on each product.

IMX 256 Station Instruments

l Digital

l IMX AIM

l Attendant Computer Consoles

l Enhanced Single-Line Sets

Digital

Single-Line Instruments

Single-Line DTMF Sets

(including

(including “dual-circuit”

Units

GMX COMBINED INTO ONE MANUAL

256 and GMX-256 products are iden-

GMX-256 Station Instruments

l Attendant Computer Consoles

GMX Single-Line Instruments

Single-Line DTMF Sets

Units

Part No. 440.8074 Issue 1, November 1994

Page 3

Part Number

440.8074

INTEG

INSTALLATION AND

FIELD MAINTENANCE

Issue 1, November

RATED

MANUAL

1994

@Inter-Tel Integrated Systems, inc. 1994

Printed in USA

Page 4

256 ISSUE 2

INDEX OF NEW FEATURES

For those individuals who are already familiar with the Issue 1 manuals for the

256 and GMX-256 Systems, the following new items are documented in this combination manual. For complete information on each item, refer to the page numbers following the brief explanation. Also, throughout the manual, %hange bars” like the one at the right have been placed in the margins to indicate any new or revised information since the original manuals.

And GMX Combined Into One Manual

the new 1995 North American Numbering Plan software releases, the IMX 256 and GMX-256 products are identical except for the station instruments that can be installed on them. To provide better service, condense reference materials, streamline training, and facilitate technical support, the installation manuals for the two systems have been combined into one generic manual. When using this combined manual to help sell, install, or service a particular system, be aware that not all of the station instruments described in this manual are available on both products. See page 2-2 for a list of the station instruments that can be installed on each product.

North American Numbering Plan

The growth of telecommunications services has created an increasing demand for more telephone

meet the demand,

has prepared a long-range North American Numbering Plan (NANP) to provide addi-

numbers.

tional telephone numbers. The plan expands the capacity of the current numbering system by making area and

office codes interchangeable. That is, numbering patterns formerly reserved for office codes can be used as new area codes and office codes within existing area codes can have the same pattern as other area codes. This version of software supports the new numbering plan. See pages

Home And Local Area Codes

and 5-90.

In many areas, the telephone company has created call-cost arrangements that refer to “home” and “local” area codes. The home area code is the area code within which the system resides. The local area codes are additional area codes that, when called, use the local or toll local call-cost rate instead of the long distance rate. Up to three local area codes can be programmed and then extended within toll restriction progxamming to provide proper call

Loop Start

Glare Protection

During a “glare” connection, the software now allows the incoming call to remain connected, while still protecting against possible toll fraud. See pages 2-14 and

Station Exchange

This programmable station feature allows a station user to exchange the extension numbers of two station circuits. This swaps the database and user programmed features of the extension numbers between two station circuits without the need for database programming.The circuit number of the station locations are unchanged, but the extension numbers are changed. See pages 4-99 and 5-31.

Digital Cards, Diil

and

Units

The IMX 256 System can now support the digital station instruments originally designed for the Inter-Tel Axxess

System. See pages

3-62 to

and 7-3.

All digital keysets utilize DSP shared resources for speakerphones, and Executive Digital Keysets have enhanced

displays. See pages 2-22,440, and 4-41. APC Data Port Module (PCDPM) must be installed on digital keysets to provide the secondary voice path needed

for the

customer-provided, modem-equipped data device may be attached to any digital keyset with a PC Data

Module (PCDPM) and a Modem Data Port module (MDPM) installed. See pages

Feature And Speed-Dial Keys On

4-87, and 5-50.

feature. See pages

and 4-61.

Port

and 4-101.

Units

Page v

Page 5

INDEX OF NEW FEATURES (continued)

“Hot” Dial Pad Keys

There is a system-wide option that, if enabled, allows keyset users to dial line access codes and feature codes without lifting the handset or pressing the SPKR or SPCL key. This programmable feature is called “hot dial pad” to

indicate that the dial pad keys are always activated. See pages

Private Intercom Call Override

If a keyset station has the Private Intercom Override feature enabled, the user can place a ing l or

When

when calling a keyset station that has handsfree mode disabled. See pages

Tone Selection

setting the ring tone on a keyset, the keyset user can enter 0 to disable ring tones. See page 4-48.

and 5-68.

call by press-

and 5-52.

Toll

The

Weekly Toll Limits:

cified types of toll calls. The feature can monitor 7- and

Set

software package now includes the following Toll Security features:

When enabled, the weekly toll limit feature keeps track of the accumulated call cost for spe-

toll calls and/or operator-assisted/international

calls. Alarm messages have been added for toll limit management. See pages

and 6-8.

Inter-Tel Enhanced DISA

Services: The weekly toll limit feature can only be enabled by Inter-Tel Services. See page 6-41.

Codes: DISA security codes can be 4-7 digits long. ADISA caller will have only three opportunities to enter a valid security code. If the caller fails three times, the failure will generate a system alarm and that trunk will be inoperable for five minutes. See pages

DISA Toll Restriction:

DISA lines can be given day and/or night mode toll restrictions like those for individual

stations (except LCR-Only). See pages

SMDR Blocked DISA

Calls

Option:

A programming flag has been added to SMDR that allows blocked DISA

calls to appear in the Sh4DR report. See pages

DISA And Hunt Group

SMDA Summary Reports

and 5-116.

and 4-124.

and 6-8.

information has been added to the System Summary report and a new Hunt Croup option has been added

to the Summary Report. See pages

End-Of-Dialing Digit Suppression

Display and Redial: A system

programmin g flag allows the programmer to specify whether all dialed digits or

and 5-140.

just the digits that make up the valid call are displayed and stored in the redial buffer. If desired, the “extra” digits

used for dial-up banking machine, voice mail, automated attendant, or other purposes

suppressed. Suppressing the extra digits prevents entries, such as PIN numbers and other codes, from being displayed when they are dialed. See pages 4-93 and 5-69.

A programming flag has been added to the

programming prompts that allows you

to specify whether all dialed digits or just the digits that make up the valid call appear in the SMDR report. See

pages 4-123 and 5-142.

Account Code Enhancements

Toll Forced Account

LCR-Only toll restriction in day

Code: Forced account codes for toll calls only can be programmed for stations with

night modes. When this account code type is enabled, the user only has to

enter an account code if the system detects that a toll call has been dialed 5-32, and 5-55.

Validated Forced Account

Codes: Forced account codes can be validated or non-validated. See page 4=-66,5-32,

5-33, and 5-55.

Page vi

is used. See pages

Page 6

INDEX OF NEW FEATURES (continued)

Voice Mail/Computer Enhancements

Do-Not-Disturb Breakthrough:

computer are not blocked by placing the station in do-notdisturb. If desired, individual stations can be set to pre-

vent these calls from breaking through do-not-disturb. See pages

Voice Mail/Computer Hunt

designated as a voice computer hunt group. See pages

Automated Attendant Hunt Groups: Voice computer hunt groups can be designated as automated attendant

hunt groups. See pages 4-21 and 5-63.

Dial RuleS: Recall Destination:

and 5-64.

tions. See page 5-66.

DTMF Feedback Tones:

tones that determine call status. See pages

the “extended” set of feedback tones can also be enabled

Allow Cross-Tenant Voice Mail/Computer

and voice mail computers will be allowed to place intercom calls, forward intercom calls, or transfer intercom or

outside calls to stations that are in different tenant groups. See pages 4-21 and

Version Feature

Code: When entered at a voice computer port this feature code generates a four-digit IYIMF

code that indicates the last four digits of the software part number. It is used by voice processing software to ensure

that the

software is compatible with the voice pro&sing features. See page 4-7.

Normally, calls to a station through

the automated attendant, or a voice

and 5-52.

Groups

All

Software Packages:

In any software package, any hunt group can be

S-61, and 5-62.

mail/computer hunt group can have an assigned recall destination. See pages 4-21

Stations:

Voice mail/computer hunt groups can serve as overflow/announcement sta-

The progress tones that are normally sent to a voice computer can be replaced with

and 5-52. If feedback tones are enabled,

system-wide programming. See pages 5-67 and 5-68.

The Programmer can determine whether voice mail units

Remote Hunt Group Remove/Replace

The Hunt Group Remove/Replace feature can be controlled from the attendant’s station using the Remote Hunt

Group Replace feature code. See pages

Hunt Group Enhancements

There is a system option that can be enabled to send

and 4-111.

unanswered hunt group calls first to the announcement

station and then to the overflow station. See pages 4-17 and 5-68. If a station that receives a recalling hunt group call chooses to transfer the call back to the hunt group, the call

retains its original queue position in the hunt group. Also, calls that go to the announcement and overflow stations do not lose their places in the queue. While the call is at a playback device announcement or overflow station (except voice compufer overflow/announcement stations) it continues to circulate through the hunt group. If a hunt group member picks up the call, it is pulled back from a playback device overflow/announcement station and connected to the hunt group station. See pages 4-18 and 4-19.

Station Off-Hook Alarm

The STXlTON OFF HOOK alarm now indicates the station that is off hook. Also, the alarm clears automatically when the station user hangs up. See pages

Equal Access

The system supports the

Numbers Supported

and “1OXXX” equal access numbers. Toll restriction SCOS 7 has also been

modified to support equal access dialing. See pages

Password Required

and 6-8.

and 5-88, and 5-113.

The password prompt will always appear when a programmer logs in to a programming session. In the default state

there is no database programming password and pressing

RETURN will allow access to the database. See page

5-10.

Page 7

256

MAINTENANCE

TABLE OF CONTENTS

Issue 1, November

PAGE

INDEXOFNEW FEATURES

TABLE OF CONTENTS

LIST OF FIGURES

FCC REGULATIONS

.....................................................

...................................................

SAFETY REGULATIONS

LIMITED WARRANTY

............................................

.................................................

...............................................

.................................................

...........................................................

1. Introduction ........................................................

2. System Capacities ....................................................

3. Software Packages ...................................................

4. Hardware Summary

5. Installation, Programming, And Maintenance Summary

6. Features Summary ...................................................

SPECIFICATIONS

1. Introduction ........................................................

2. Cabling And The Main Distribution Frame

3. Equipment Cabinet ...................................................

4. Station Instruments

5. Additional System Equipment

..................................................

......................

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..........................................

...

xvii

l-l

l-l 1-2 l-3 1-3 1-4

2-l

2-2 2-4 2-6 2-21 2-31

INSTALLATION

1. Introduction ........................................................

2. System Installation Outline ............................................

3. Pre-Installation Checklist

4. Station Cabling ......................................................

5. Assembling The Main Distribution Frame

6. Equipment Cabinet Installation

7. Station Installation

9. External Paging Equipment Installation

10. External Music Source Installation

11. Preventative Maintenance

12. Post-Installation Checklist

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..............................................

Backboard

.........................................

...................................................

Output Device Installation

.......................................

..............................................

.............................................

................................. 3-98

...................................

................. 3-9

3-1 3-2

3-2 3-3 3-6

3-35

3-62

3-98

3-99

3-99 3-100

Page ix

Page 8

Issue 1, November 1994

OF CONTENT!3

INSTALLATION

MAJNTENANCE

CONTENTS

FEATURES

1. Introduction

2. Accessing The Features

3. System Organization

4. Tnmk Features

5. Station Instruments

6. User-Programmable Feature Keys

7. Automatic Call Access (Keysets Only)

8. Music-On-Hold And Background Music

9. Signals And Tones

10. Intercom Galls

11. Inter-Station Messages

12. Off-Hook Voice Announce (OHVA)

13. Outside Galls

14. Placing Calls On Hold

15. Call Waiting

16. Call Transfer

17. Reverse Transfer And Group Call Pick-Up

18. Call Privacy And Privacy Release

19. Barge (Keysets Only)

20. Conference Galls

21. System Forwarding

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...................................................

22. Call Forwarding .....................................................

23. Speed Dialing

24. Optional System Directory

25. House Phone

.......................................................

Intercom And Outside (Keysets Only)

...........

........................................................

26. Redialing ...........................................................

27. Paging

28. Remove From Paging

29. Do-Not-Disturb

30. Cancel Miscellaneous Operations

31. Hookflash

32. Reminder Messages (Keysets Only)

33. Optional Station Exchange Feature

34. Optional Data Device Attachments (Keysets Only)

35. Attendant Features

36. Record Keeping And Maintenance Features

.............................................................

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......................................................

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PAGE

4-4 4-4 4-12 4-24 4-40 4-51 4-52 4-53

4-54

4-55

4-58 4-61 4-62 4-67 4-69

4-70 4-73 4-74 4-75

4-76

4-79 4-82 4-85 4-90

4-92

4-93

4-94 4-94

4-95 4-97 4-97 4-98 4-99 4-101 4-103

4-114

Page x

Page 9

256

& MAINTENANCE

TABLE OF CONTENTS

Issue 1, November 1994

CONTENTS

PROGRAMMING

1. Introduction

2. System Set-Up For Programming

3. Session Timer And Screen Saver

4. Microsoft Windows

5. How To Use The Programming Windows

6. Applications Menu

Values

8. Station Programming

9. Station Programming

10. System-Wide Features

11. Toll Restriction

12. Least-Cost Routing @CR)

13. Trunk Programming

14. Attendants

15. Station Message Detail

16. Service

.............................................................

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........................................................

.......................................

........................................

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.................................

...................................................

.......................................................

Individual Station Information

Batch Programming Options

................................................

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PAGE

5-l

5-3 5-3

5-11 5-11

5-12 5-15 5-24 5-25 5-44 5-54 5-88

5-98 5-103 5-132

5-137 5-145

TROUBLESHOOTING

1. Introduction

........................................................

2. Troubleshooting Checklist

3. Light-Emitting Diode (LED) Indications

4. Alarm Messages And Field Service Diagnostics

5. Troubleshooting Charts

6. Customer Support

7. Defective Unit Return Policy

REPLACEMENT PARTS

1. Introduction

........................................................

2. Ordering Procedure

3. Replacement Parts List

4. Recommended Spare Parts

.................................................

.............................................

..................................

............................

................................................

....................................................

...........................................

................................................

...................................................

................................................

.............................................

APPENDIX A- GX STATION INSTRUMENTS

1. Overview.

2. Specifications

3. Installation

4. Features

5. Programming

..........................................................

.......................................................

.........................................................

............................................................

.......................................................

...........................

6-l 6-l 6-l 6-l 6-8 6-12

6-41 6-41

7-l 7-l

7-1

A-l

A-l A-l A-4 A-10 A-10

Page xi

Page 10

Issue 1, November

OF CONTENTS

INTER-TELPRACTICES

256 INSTALLATION

MAINTENANCE

APPENDIX B

1. Overview

GMX STATION INSTRUMENTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . .

2. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..*............*.......

Features

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. Programming

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . .

INDEX

B-l

B-l B-l B-5

B-10 B-10

I-l

Page xii

Page 11

SPECIFICATIONS

MAINTENANCE Issue 1, November

LIST OF

Figure 2-l. Figure 2-2. Figure 2-3. Figure 2-4. Figure Figure 2-6. Figure 2-7. Figure 2-8. Figure 2-9. Figure 2-10. Figure 2-11. Figure 2-12. Figure 2-13. Figure 2-14. Figure 2-15. Figure 2-16. Figure 2-17. Figure 2-18.

Voice Channel Allocation Digital AC Transformer Requirements Executive Digital Keyset (also called Executive Digital Terminal)

Standard Digital Keyset (also called Standard Digital Terminal)

IMX 24-Line AIM Keyset IMX

IMX

AIM IMX 8-Line Keyset IMX 8-Line AIM Keyset

Inter-Tel/DVK

....................................

.........................

........................................

....................................

........................................

....................................

.........................................

.....................................

Keyset

................................

....

......

.................................

Digital Direct Station Selection/Busy Lamp Field (DSS/BLF) Unit

...

........................................

.................................

Enhanced Single-Line Set (ESLS) Single-Line Instrument (SLI)

.............................

.................................

2-7

2-24

2-33 2-34

2-35 2-36 2-37 2-38 2-39

2-40 2-41 2-42

2-43

2-45 2-46

2-47

2-48

INSTALLATION

Figure 3-l. Figure 3-2. Figure 3-3.

Figure 3-4.

Digital Keyset Modular Jack Assembly Wiring Analog Station Modular Jack Assembly Wiring Sample MDF Block Layout And Cable Assignments

Example Of Ferrite Bead Installation Figure 3-5. Figure 3-6. Figure 3-7. Figure 3-8.

IDC Block Cable Terminations

EMC Block Cable Terminations Figure 3-9.

Figure 3-10.

Modular Jack Assembly Wiring For

Figure 3-11. Figure 3-12. Figure 3-13. Figure 3-14.

Using The

Digital KSC Block Cable Terminations For Keysets

Analog KSC Block Cable Terminations

...........................

................................

...............................

Span Terminations From RJ48C Jacks

.......................

Spans

Span Terminations From RJ-Type Blocks

Card’s Optional DB15 Connector

.........................

Page xiii

...................

...............

.................

....................

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...............

3-7 3-8 3-10 3-12 3-13 3-14 3-15 3-16 3-18 3-18 3-19 3-20 3-22

3-23

Page 12

LIST Issue 1, November

256

INTER-TELPRACTICES

Figure 3-15. Figure 3-16.

Figure 3-17. Figure

3-18. Figure 3-19. Figure 3-20. Figure 3-21. Figure 3-22. Figure 3-23. Figure 3-24. Figure 3-25.

Figure 3-26. Figure 3-27. Figure

3-28.

Figure 3-29.

Figure 3-30.

Figure 3-31.

TITLE

Installing &Line IMX AIM Keysets Two To A Circuit KSC-D Block Cable Terminations For Dual-Circuit Keysets

SLC Block Cable Terminations

IDC Block Cable Terminations

................................

Station Cable Terminations On The Station Block RCPU Card Cable Terminations

Modular Jack Assembly Wiring For Optional

Connecting Two

Cards Together

...............................

Alarm Relays

.............................

Power Cable Connectors On The Telecom Motherboard

Connecting The Power Cable To The Telecom Motherboard Cable Connections To The Power Supply Chassis Power Supply Module Installation Equipment Cabinet Grounding

.............................

................................

Power Supply Connector Pinouts And Voltage Test Point Locations RCPU Card

Digital Keyset Card (DKSC)

...............................................

..................................

.............

.........

.................

......

............

.........

.................

...

................................

3-24 3-25 3-26

3-27 3-28 3-31 3-33

3-34 3-36 3-37

3-38 3-40 3-41 3-43 3-46 3-48 3-50

Figure

3-32.

Figure 3-33.

Figure 3-34. Figure 3-35. Figure 3-36. Figure 3-37.

Single-Line Card (SLC) Inward Dialing Card (IDC)

Loop/Ground Start Card (LGC)

Loop Start Card E&M Card (EMC)

Card

..........................................

...........................................

Standard Digital Keyset LCD Installation.

Digital Keyset Self-Test Key Matrix

Digital PC Data Port Module (PCDPM) Installation Sample Digital PCDPM Cable Connections

Figure Figure Figure Figure Figure 3-38. 3-39. 3-40. 3-41. 3-42. Figure 3-43.

Figure 3-44.

Digital Modem Data Port Module (MDPM) Installation IMX 24/12-Line Keyset LCD Installation Bottom Of 8-Line Dual-Circuit IMX AIM Keyset

Figure 3-45.

Figure

3-46.

Figure 3-47.

IMX Keyset Inter-Tel/DVK

Set-Up

Figure 3-48. Figure 3-49. Figure 3-50.

Inter-Tel/DVK Data Port Module Installation

Set-Up

.....................................

...................................

...............................

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....................................

Keyset “Large” LCD Installation

...........

.........

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..................................

3-52 3-53

3-55

3-56 3-58 3-60 3-63 3-65 3-68

3-69 3-70 3-72 3-76

3-79 3-80 3-82

3-84

3-88

3-89

Page xiv

Page 13

LIST OFFIGURES

Issue 1. November 1994

TITLE

Figure 3-51. Back Of Digital DSS/BLF Unit

........ .......................

Figure 3-52. Inter-Tel/DVK DSS/BLF Unit Control Board Figure 3-53. Figure 3-54. Bottom Of ESLS

Figure 4-l. Figure 4-2.- Figure 4-3. Figure 4-4. Figure 4-5. SMDR Report Format

PROGRAMMING

Figure 5-1. Figure 5-2. Figure 5-3. Figure 5-4.

Figure 5-5. Figure 5-6. Figure 5-7. Figure 5-8. Figure 5-9. Figure 5-10. Figure 5-11.

Figure 5-12. Figure 5-13.

Figure 5-14. Figure 5-15. Figure 5-16. Figure 5-17. Figure 5-18. Figure 5-19. Figure 5-20. Figure 5-21. Figure 5-22.

Figure 5-23. Figure 5-24.

SLI Control Board

Span Applications SMDA Account Code Report Format SMDA Summary Report Format SMDA Detailed Report Format

................. .........................

..............

........

.............................

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..........

...............................

.......................................

Applications And Programming

Customized Programming Report Samples

............ ................

......................

Sample Board-To-Voice Bus Mapping Report

Individual Station Programming (STN)

Key Assignments (KEY)

.....................................

Ring Zone Programming (ZONE) Station Features (SFEA)

Account Codes (ACCI’)

.....................................

........ ........ .....................

.........................

....... ......................

Do-Not-Disturb And Reminder Messages (MESG)

Extensions, Usernames, And Feature Codes (EXT) Hunt Groups (HUNT)

Misc. System-Wide Information (MISC) Page Zones (PAGE) Relays @LAY) System Forwarding Paths (SFWD) System Speed Dial (SSPD) System Timer (TIMR)

Tenant Groups (TNT)

Carriers And Allowed Long Distance (ALT)

.......................................

........................

.................................. .......

............................................

.............................

...................................

.......................................

.....................

Area/Office Code Restriction User Groups (AREA)

Station Class Of Service/LCR Advances (SCOS)

Toll Security (TOLL)

Least-Cost Routing (LCR) Individual Trunk

Trunk Groups, Did Groups

............ .........

........ ...........................

.....................................

....................

................

...............

.................

..................

Patterns (TRNK)

.....

PAGE

3-91 3-94 3-96 3-97

4-36

4-117

4-118 4-120 4-124

5-124

5-156 5-173 5-174

5-177

5-188 5-189

5-190 5-195 5-197 5-202 5-203 5-204 5-204 5-205 5-206

5-207

5-210 5-211 5-212 5-213 5-216 5-217 5-223 5-224

Page xv

Page 14

OFFIGURES

Issue 1, November 1994

NUMBER TITLE PAGE

256

MAINTENANCE

Figure 5-26.

Figure S-27. Attendants

Figure 5-28. Attendants Figure 5-29. Call Cost (COST) Figure S-30. SMDA (SMDA) Figure 5-31. SMDR (SMDR) Figure S-32. Error Reports (ERR) Figure 5-33. Passwords (PASS) Figure 5-34. Serial Port Configuration (PORT) Figure 5-35.

Programming

....................................... 5-227

Alias Programming (ALSS) DSWBLF Units (DSS)

..........................................

...........................................

............................................

........................................ 5-233

..........................................

System Configuration (CONF)

.......................

...........................

..............................

................................

TROUBLESHOOTING

Figure 6-1. Light-Emitting Diode (LED) Indications Figure 6-2.

Figure 6-3. CO Trunk Troubleshooting Chart

Figure 6-4. Feature Troubleshooting Chart Figure 6-5. Keyset Troubleshooting Chart

System Troubleshooting Chart

................................

.................................

..............................

Figure 6-6. Single-Line Set Troubleshooting Chart Figure 6-7. DSS/BLF Unit Troubleshooting Chart

........................

..........................

5-228 5-229 5-230 5-231 5-232

5-233

5-234

5-235

6-3 6-14 6-18

6-24 6-30

6-36 6-39

REPLACEMENTPARTS

Figure 7-l.

Replacement Parts

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 7-2. Recommended Spare Parts

APPENDIX A

Figure A-l. Figure A-2. Figure A-3. Figure A-4. Key Assignments (KEY)

GX 24-Line Keyset GX Keyset Bottom

......................................... A-3

......................................... A-5

GX DSS/BLF Unit Bottom

.....................................

APPENDIX B

Figure B-l.

Figure B-2. Figure B-3. Figure B-4. Figure B-5.

GMX 24-Line Keyset GMX GMX 24-Line Keyset Data Port Module Installation GMX DSS/BLF Unit Bottom Key Assignments (KEY)

....................................... B-3

....................................... B-4

.....................................

. . . . . . . . . . . .

7-l

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

...................................

A-9

A-11

............... B-7

................................. B-9

B-11

Page xvi

Page 15

MAINTENANCE

FCC REGULATIONS

Issue 1,

November 1994

FCC REGIJIAI’IONS

IMPORTANT:

This equipment complies with Part 68 of FCC rules. On the back of the equipment cabinet is a label that contains, among other information, the FCC registration number and ringer equivalence number

for this equipment. Customers connecting this equipment to the telephone network shall, before such connection is made, give notice to the tele-

phone company of the particular line(s) to which such connection is to be made, and shall provide the telephone company with the following information:

Complies with Part 68 of FCC rules FCC registration number:

MF-E (for MF-rated systems) or

(for KF-rated systems)

Quantities and USOC numbers of required inter-

face jacks (see chart on next page)

Sequence in which trunks are to be connected

equivalence number

der code

chart on next page)

NOTE: The tity of devices which may be connected to the telephone line. Excessive RENs on the telephone

line may result in the devices not ringing in re-

sponse to an incoming call. In most, but not all

areas, the sum of the RENs should not exceed five (5.0). To be certain of the number of devices that may be connected to the line, as determined by the total RENs, contact the telephone company to determine the maximum ing area.

as applicable, by position (see

is used to determine the quan-

or service or-

for the call-

tion to party line service is subject to state

(Contact the state public utility commission, public service commission, or corporation commission for information.)

If this equipment causes harm to the telephone network, the telephone company will notify the customer in advance that service may be temporarily discontinued. But if advance notice is not practical, the telephone company will notify the customer as soon as possible. Also, the customer will be advised of the right to file a complaint with the FCC, ifneces-

The telephone company may make changes in its fa-

cilities, equipment, operations, or procedures which may affect the operation of this equipment. If so, the customer shall be given advance notice so that any necessary modifications can be made in order to maintain uninterrupted service.

If trouble is experienced with this equipment, contact a local authorized factory service representative

for repairs and/or warranty information. The cus-

tomer, users, and unauthorized technicians should

not repair, make adjustments to, or attempt to service this equipment in any way.

In the event of trouble with the telephone line(s), this

equipment must be disconnected from the telephone

line(s). If trouble ceases, the equipment must be repaired by an authorized factory service representative. If the trouble continues to occur with the

equipment disconnected, the telephone company

should be notified that they have a problem. If this is

the case, repairs or adjustments made by the telephone company will be made at their expense.

Facility interface code

chart on next page)

The telephone company should also be given notice upon final disconnection of this equipment from the

particular line(s). It is also the responsibility of the customer to provide

the telephone company with registration numbers of any other devices which are configured for connection to the telephone network.

This equipment cannot be used on public coin service provided by the telephone company. Connec-

by position (see

Page xvii

Allowing this equipment to be operated in such a

signaling is in violation of Part 68 of FCC rules. This

equipment returns answer supervision signals to the

public telephone network when: answered by the

called station, answered by the attendant, routed to a

recorded announcement that can be administered by

the equipment user, and routed to a dial prompt. This

equipment also returns answer supervision on all

DID calls forwarded back to the public telephone network. Permissible exceptions are: a call is unanswered, busy tone is received, and reorder tone is received.

Page 16

FCC REGULATIONS

Issue 1, November

INSTALLATION

MAINTENANCE

* Available with MF-rated systems only. According to FCC regulations, tar%& do not permit the use of ground-

start facilities with RF-rated systems.

* *

When using instead, provide the telephone company with DID answer supervision code

facilities to provide DID service, do not use the DID facility interface code (FIG) as listed above;

and the FIC for the requested

service.

Also interfaces with Class A and B.

This equipment does not currently comply with the

amended Part 64 of FCC rules (CC Docket No.

which requires that equipment sold and installed in the “call aggregator”market (i.e., hotels, motels, hospitals, universities, etc.) must allow users equal access to the long distance carriers of their choice (i.e., must allow the

dialing sequences normally used for “operator-assisted” calls, while blocking those normally used for ‘direct-dial” calls). In the future, this equipment may be modified to comply with this requirement.

NOTICE: THE TELEPHONE

SPE-

CIFICALLY DESIGNED FOR THIS SYSTEM HAVE

ARE

COMPLIANCE

SECTION 68.316 OF

THE FCC RULES.

WARNING:

This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s

instructions, may cause interference to radio and television reception. It has been type tested and found to com-

ply with the limits for a Class A computing device in

accordance with the specifications in Subpart J of Part 15 of FCC Rule. Operation of this equipment in a residential area may cause unacceptable interference to ra-

dio and TV reception requiring the operator to take whatever steps are necessary to correct the interference. However, there is no guarantee that interference will not occur in a particular installation. 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 receiving antenna Relocate the equipment cabinet with respect to the

receiver

Check that the equipment cabinet and receiver are

not on the same circuit; the equipment cabinet must be powered from an isolated, dedicated AC outlet

If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the FCC helpful: “How to Identify and Resolve Radio-TV Interference Problems”

This booklet is available

the U.S. Government

Printing Office, Washington, D.C. 20402, Stock No.

-398-5. If

problems persist, contact Inter-Tel Customer

support.

Page xviii

Page 17

INTER-TELPRACTICES

256

Issue 1, November 1994

The Inter-Tel

listed by Communication Certification Laboratory (CCL) as meeting the Product Safety Requirements of UL 1459, Standard for Telephone Equipment.

CCL is approved by the Occupational Health and

Safety Administration

Recognized Testing Laboratory

installation, also check the local

for importalrt information concerning the irzstalla-

tion of telephone and electronic quipment.

The following safety information is reprinted from UL

1459.

and GMX 256 Systems are

as a Nationally

codes

IMPORTANT SAFETY

INSTRUCTIONS

When using your telephone equipment, basic safetypre- cautions should always be followed to reduce the risk of fire, electric shock, and injury to persons, including the

following:

1. Read and understand all instructions.

Follow all warnings and instructions marked on the product.

3. Unplug this product cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.

4. Do not use this product near water (for example, in a wet basement).

Do not place this product on an unstable cart, stand, or table. The product may fall, causing serious damage to the product.

6. Slots and openings in the cabinet and the back or bottom are provided for ventilation, to protect it from overheating; these openings must not be blocked or covered. This product should never be placed near or over a radiator or heat register. This

product should not be placed in a built-in installa-

tion unless proper ventilation is provided.

7. This product should be operated only from the type of power source indicated in the manual. If you are not sure of the type of power source to your building, consult your dealer or local power company.

8. This product is equipped with a three-wire grounding type plug, a plug having a third (grounding) pin. This plug will only fit into a grounding type power outlet. This is a safety feature. If you are unable to

insert the plug into the outlet, contact your electri-

the wall outlet before

cian to replace your obsolete outlet. Do not defeat the safety purpose of the grounding type plug.

Do not allow anything to rest on the power cord. Do not locate this product where the cord will be

abused by persons walking on it.

10. Do not use an extension cord with this product’s power cord. The AC outlet for this product should not be used for any other electrical equipment.

11. Never push objects of any kind into this product through cabinet slots as they may touch dangerous voltage points or short out parts that could result in a

risk of fire or electric shock. Never spill liquid of any kind on the product.

12. To reduce the risk of electric shock, do not disas-

semble this product, but take it to a serviceman when some service or repair work is required. Opening or removing covers may expose you to dangerous voltages or other risks. Incorrect reassembly can cause electric shock when the product is subsequently used.

13. Unplug this product from the wall outlet and refer

servicing to qualified service personnel under the following conditions:

When the power supply cord or plug is dam-

aged or frayed. B. If liquid has been spilled into the product. C. If the product has been exposed to rain or wa-

ter. D. If the product does not operate normally by fol-

lowing the operating instructions. Adjust only

those controls that are covered by the operating instructions because improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to normal op-

eration.

E. If the product has been dropped or the cabinet

has been damaged. If the product exhibits a distinct change in per-

formance.

14. Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of electric shock from lightning.

15. Do not use the telephone to report a gas leak in the vicinity of the leak.

SAVE THESE

INSTRUCTIONS

Page xix

Page 18

For a period of one (1) year from the date of shipment to

Buyer, INTER--TEL warrants the Equipment (except for fuses and lamps) to be free workmanship, or both, and to comply with specifications for the Equipment, as set forth in the

and

clusive remedy for breach of this Limited Warranty shall be to have the defective Equipment (or parts) repaired or replaced at INTER-TEL% option. Shipping

costs incurred returning warranty work to INTER-TEL shall be paid for by the Buyer.

Equipment (or parts) damaged by improper handling, normal wear and tear, accidents, lightning damage, neg-

ligence, or improper use or maintenance, and does not

apply to Equipment altered without authorization by INTER-TEL. This Limited Warranty does not extend to

any claims, suits, damages, liabilities, costs, and expenses arising from any act, action, or inaction of Buyer. Although the Moss-Magnuson Act should not apply, in the event that it is held to apply by a court of competent

jurisdiction, the implied warranty of fitness for a par-

ticular purpose shall extend for the one-year (l-year) period from the date that the Equipment was shipped to the Buyer.

to the Buyer,

This Limited Warranty does not apply to

defects in material,

Buyer’s sole and ex-

This Limited Warranty

any customer, user, or

ALL OTHER

FOR A

WZiZZCHEXTEND BE LOSS OF

BUYER POSSESSION,

For complete information on returning equip

turn This document includes specific information on the following subjects: warranty, procedures to

follow when returning equipment, equipment

damaged in shipment, insurance, repair policy,

and advance replacement policy.

FOR LOSS OF

OR CONSEQUENTIAL

SUCH

BY THE

Policy

PURPOSE.

OR OTHER LOSSES ZNCUZMED BY

(document part number 835.1065).

OF AND EXCLUDES

EXPRESS OR ZiUPKlED,

PROFZl3,

THE PURPOSE,

OR USE OF

Re-

Page xx

Page 19

256

MAINTENANCE

Issue 1, November

OVERVIEW

1. Introduction ..........................................................

2. System Capacities .....................................................

3. Software Packages

....................................................

4. Hardware Summary ...................................................

Installation, Programming, And Maintenance Summary

....................

6. Features Summary ....................................................

. System Features ...................................................

B. C. Enhanced Single-Line Set (ESLS) Features

D. Single-Line Instrument

Features ...................................................

............................

Features ................................

E. Direct Station Selection/Busy Lamp Field (DSS/BLF) Unit Features .

Attendant Computer Console Features

G. Attendant Features

................................................

................................

H. Maximum Capacities ..............................................

1. INTRODUCTION 2. SYSTEM CAPACITIES

1.1 The 256

ce/data, hybrid telephone system. As a hybrid system, it incorporates many of the user-tiendly features of key systems with many of the expanded features and flexibility of private branch exchange (PBX) systems.

1.2 The 256 System is designed to meet the needs of growing businesses. ture (including digital signal processing) allows it to be

easily adapted and expanded as business communication needs change. The modular design makes the system easy to install and service. And, the programmable features provide an abundance of user-friendly applications to meet each customer’s needs. Highlights of the system’s design include:

Advanced microprocessor technology.

Modular, easily replace-able hardware with add-on

capabilities for optional features.

Flexible programming to customize many system

and station features.

System is a state-of-the-art, digital, voi-

fact, the system’s unique struc-

2.1 The equipment cabinet has 16 slots for station and

trunk cards. The actual number available depenak on the nwnber and type tion

2.2

For example, if all 16 cards are station cards, there can be a maximum of 256 station instruments installed. Or, if only one of the cards is a type of Keyset Card (required), four are

the other 11 are Loop/Ground Start Cards, the system maximum is 16 stations (using digital keysets or using

circuit) and 184 trunks. Of course, in most circumstances, the maximums listed below will never be reached due to the variety of cards and station instruments installed.

A fully-equipped 256 System has the capacity for

up to:

256 Ports (16 available card slots with a maxi-

mum 16 circuits per card equals 256 ports. Although it is theoretically possible to equip more than 256 ports [e.g., using digital or 8-line IMX AIM keysets], the system limits the number to 256. See page 2-6 for more information.)

Cards (the maximum allowed), and

which can be installed two to a

of stations and trunk

supply motihles installed

.......

Cards and/or

l-l l-l l-2 l-3 l-3 l-4

l-4 l-5

l-6 l-6 l-7 l-7 l-7 l-8

Page l-l

Page 20

OVERVIEW

Issue 1, November 1994

INSTALLATION

INTER-TELPRACTICES

MAINTENANCE

Non-Blocking Voice Channels (The

exact number of voice channels available de-

pends on the

of DTMF decoders installed in the system. The voice channels are available for outside calls, intercom calls, and

paging on a first-come, first-served basis. See page 2-6 for more information.)

184 Central Office (CO)

(Loop start

and/or ground start trunks installed in increments of up to eight or 24, depending on the number of

Loop/Ground Start Cards Cards [LsCs], and/or

Cards

in the equipment cabinet.

Loop Start

installed

and

can have up to eight CO trunks installed, while can have up to 24 CO trunk circuits installed.)

The system is limited to a maximum of

four

Cards. (Pour cards with up to 24 circuits

per card equals 96 possible

Direct Inward Dialing (DID)

trunk circuits.)

(Direct station access trunks installed in increments of up to eight or 24, depending on the number of Inward Dialing Cards

and/or Cards installed in the equipment cabinet. can have up to eight DID trunks installed, while

can have up to 24 DID trunk circuits

installed.)

140

(Special “tie” trunks between

two supporting telephone systems [e.g., between

two 256

Systems] installed in increments of up to four or 24, depending on the number of E&M Cards equipment cabinet.

trunks installed, while

and/or

Cards installed in the

can have up to four

can have up to

tion Selection/Busy Lamp Field Units

Circuits Equipped With Direct Sta-

(Digital DSWBLF Units are physically attached to and programmed to be used with specific digital

Up to four units may be

attached to one keyset. The units are powered by

their own AC transformers and do not require a

DKSC circuit that is separate from the keyset’s circuit. Analog

analog DSS/BLP Units, and Attendant Computer Consoles use separate KSC or KSC-D circuits. For each analog DSS/ BLF Unit installed, one less analog keyset or At-

tendant Computer Console may be installed. Up to four analog to a single

Units may be connected

Card, and as many units as de-

sired can be used with a single keyset. See page

2-27

for more information.)

3. SOFTWARE PACKAGES

3.1 The IMX 256 System is available in five software “packages” (refer to REPLACEMENT PATnrs for the part numbers). The customer can choose between one

rated system permits only one trunk to be accessed per trunk key, and users can access only one auto trunk and only one trunk in each of the trunk groups. The MP-rated systems permit one-key access to multiple outgoing trunks. The five software packages are listed below.

MF-rated,

This software package has all of the features

Basic

package:

described in this manual except Toll Security, Intercom/Outside Directory, Automated Attendant, Station Message Detail Accounting (SMDA),

and E&M.

Stations (Combinations of

BLF Units, Attendant Computer Consoles, and

This software package has all of the features

single-line sets in increments of up to eight or 16, depending on the number of Digital

Cards

Single-Line Cards

Cards

and/or Inward

MF-rated,

Dialing Cards @DCs] installed in the equipment cabinet. XSCs can have from eight to 16 stations connected depending on the type of used, SLCs can have up to 16 stations connected,

This software package has all of the features

and IDCs can have up to eight.)

NOTE: At least one DKSC, must be installed to provide an attendant (equipped with a display keyset or an Attendant Computer Console) to program selected system data, act as the attendant for unsupervised CO recalls, receive system alarm messages, etc.

or KSC-D

3.2 The IMX 256 system has an additional software package that has all of the features described in this manual, plus it allows the GX station instruments to be

installed on the system. (Refer to Appendix A in the

back of the manual for complete information.)

Extended

described in this manual except

package:

Tl and E&M

and

package:

This software package has all of the features

described in this manual.

Tl and E&M

package:

described in this manual except Least-Cost Routing @CR).

Page l-2

Page 21

INTER-TELPRACTICES

256 INSTALLATION

MAINTENANCE

OVERVIEW

1, November 1994

According to FCC regulations, if a customer wishes to change from an existing RF-rated system to an MF-rated system (or vice versa), the installing company must advise the customer “to notify the telephone corn-

or MF] rate and that they may have to certify in writing to the telephone company that the equipment is configured as a key system and pay appropriate service order charges.”

4.1’

The SPEClFICATIONS section of this manual explains environmental requirements of the system, describes the hardware, and gives pre-installation information. The hardware descriptions include: equip ment cabinet, power supply, circuit cards, station instruments, and additional equipment needed for the

optional features.

INSTALLATION, PROGRAMMING, AND MAINTENANCE SUMMARY

5.1

The modular design and self-diagnostic capabili-

ties of the system facilitate installation and repair with minimal down-time. Strict quality control standards for manufacturing and thorough field testing provide the system with the reliability demanded by today’s

technology market.

5.2 The

tions for assembling the main distribution frame (MI@)

and for installing the equipment cabinet, power supply, circuit cards, station instruments, and other optional hardware.

53 cedures for programming the system features. After the system is installed, the flexible software allows the database to be customized to meet the customer’s needs. An external, customer-provided, IBM AT-compatible personal computer (PC) is used to perform this task.

5.4 The

instructions for correcting system problems and replacing defective parts. Part numbers and a recommended inventory of spare parts are listed in the

section

section describes the pro-

section gives

instruc-

Page 1-3

Page 22

OVERVIEW

Issue 1, November

6.1

System,

Attendant Computer Console, and attendant features are listed on the following pages.

with an asterisk

complete descriptions and operating instructions, refer to the SPECIFICAI’IONS and this manual.

single-line set,

Unit,

For

sections of

256 INSTALLATION

* Optional facsimile machine

* Optional battery back-up

* Optional exte ma1

* Optional playback devices for use with the auto-

INTER-TELPRACTICES

MAINTENANCE

paging equipment

mated attendant and hunt group features

System Organization and Record Keeping

Hardware add General System

Five available software packages Flexible station instrument

and num-

bering plan

connectors on the ROM Central Process-

ing Unit

Card for connecting optional

AT-compatible) PC for programming

accessible system voltage test points on the

front edge of the RCPU Card Database battery back-up with voltage test points Adjustable baud rates for on-site programming and

the optional

output devices (110,

and 19200 baud)

Computer modem with software auto-baud on the RCPU Card for remote programming (300 and 1200 baud)

Variable system timers Industry-standard message waiting capability on

derived from a combination

of system voltages)

l * Optional Station Message

Detail Recording

(SMDR) and/or Station Message Detail Accounting

(SMDA) output device(s)

One relay on the RCPU Card is dedicated as a power failure transfer relay; the other relay is a general purpose relay that can be used for night transfer, general signaling devices, etc.

Optional Attendant Co

mputer Consoles (personal computers equipped with headsets; allow the user to view system activity on the monitor and to process calls and messages using the keyboard)

* Two optional external music sources

* Optional off- premises

extensions (OPXs) with vari-

able ring cadence

* Optional OPX repeaters

* Optional multi-port voice mail system

* Optional

speaker equipment

Ten paging zones and nine external paging ports

* Station Message Detail Recording (SMDR)

l * Station Message Detail Accounting (SMDA)

available only in the

and

* Programmable reports for toll restriction, Least-

software packages

Routing

and station data

and

Call cost accounting (estimated)

Forced, forced LCR toll, standard, optional, and

class-of-service account codes (forced account codes can be validated or non-validated)

Flexible attendant arrangements Tenant groups and departments

* Hunt groups with individually-programmed timers (may have optional overflow and announcement stations with playback devices)

System alarm display and reporting

l Voice computer hunt groups with optional

feedback tones

Auto trunks and trunk groups (restricted to accessing a single trunk on KF-rated systems)

Automatic incoming trunk answering Dual-tone multi-frequency

or dial-pulse

signaling

Loop start and/or ground start compatibility

Hybrid balancing (ideal, loaded, or unloaded) for optimal CO trunk performance

CO trunk receive and transmit adjustments for optimal voice volume levels

Relaxed ring detection (ground start trunks on LGCs

Outgoing-access, allowed-answer, and ring-in

assignments on a station-by-station basis (day lists

and night lists)

Day and night modes of operation (by tenant group)

Day and night toll restriction on a station-by-station basis (including provisions for eight area/office code

Page 14

Page 23

256

MAINTENANCE

Issue 1, November 1994

OVERVIEW

restriction user groups and PBX, absorbed-digit, and equal access dialing)

Least-Cost Routing (LCR) (may be programmed on

a station-by-station basis to be transparent to the

-not available in the

and

System-wide Call Privacy Release option Trunk reseize capability on a station-by-station

basis Direct Inward System Access

packages, DISA lines can have toll restriction class of service similar to station toll restrictions

l * Automated attendant

packages Basic Basic E&M networking (tie trunks) Direct inward dialing (DID) trunks Flexible DID ring-in assignments Programmable wink, immediate, or delay start op-

tions for DID and EgLM trunks Toll Security with weekly limits for 7- and

and/or operator-assisted and international calls available

and E&M

General Station Features

Programmable feature codes for easy station operation

Call privacy/privacy release Station-to-station intercom calls Off-Hook Voice Announce (OHVA) calls (the abil-

ity to place or receive OHVA calls depends on the disabled on a station-by-station basis)

Inter-station messages and message cancel Station exchange

Ring intercom always Private intercom call override Automatic camp on to busy stations, trunks, and

LCR (ability to camp on to LCR may be disabled on

a station-by-station basis) Busy trunk/station callback (queue) Individual hold Call splitting Hold recall

software package

and

available only in the

and

trunk emulation

only in the Extended

software packages

Tl and

and

in the

software

Call waiting Call transfer to outside telephone numbers and ex-

tension numbers Transfer to hold Transfer recall Reverse transfer and group call pick-up conference calls

taneous three-party conferences to four simultaneous &party conferences

System forwarding (routes calls based on the type of

call and the status of the intended station)

Call forward to extension numbers and hunt group

pilot numbers

Call forward to outside telephone numbers

System speed dialing (including non-display and

tenant-specific numbers)

override station class of service

Station speed dialing

Redial (last number dialed or, at keysets only, last

number saved)

Do-not-disturb with customized messages (the abil-

ity to place a station in do-notdisturb may be en-

abled/disabled on a station-by-station basis)

Cancel miscellaneous operations

Hookflash (over all types of trunks)

Hunt group remove/replace

House phone

Silent messaging (leaves a message at

out placing an actual call)

Various digital and analog keyset models are avail-

able (for a complete listing of all the keyset models available and the optional equipment that may be installed on them, refer to pages 2-21 and 2-25 in

Digital and tone volume levels for intercom calls, outside

calls, background music, etc.

* Liquid crystal display (LCD) (optional on some models) for viewing: numbers dialed; speeddial numbers; inter-station, do-notdisturb, and reminder messages; date/time; programming; etc.

Optional Data Port Module on IMX 12-/2Q-line key- sets and modem-equipped data device (for simultaneous

-capacity ranges from 10 simul-

can be programmed to

FEATURES

AIM

and

identification; station

for installing a

Page 24

OVERVIEW

Issue 1, November 1994

256 INSTALLATION

MAINTENANCE

voice/data communication), or for installing a loud

ringing adapter (LRA) and signaling device(s)

l * Optional Personal Computer Data Port Module

nounce receive capability and to allow a digital

Module to

l * Optional Modem Data Port Module

installed

on digital keysets for installing a device (for simultaneous voice/data communica-

tion) or a single-line set -requires a PCDPM

12-key pushbutton keypad

keypad

-allows dialing of

codes, extension numbers, and trunk access codes without pressing the SPCL key or lifting the handset

Up to 20 key maps for determining the exact layout and function of the keys

Feature keys for one-key access to feature codes

(some of the keys may be designated as user programmable)

speed-dial (SD) keys with light-emitting

diode (LED) indicators Call appearance keys with LED indicators (for in-

coming call indication/access)

Secondary call keys with LED indicators (show ring-in indications for the designated ‘Primary” station)

Individual trunk keys with LED indicators (for incoming and outgoing call indication/access)

Trunk group keys with LED indicators (for outgoing call access and trunk group status)

Integrated speakerphone (allows handsfree operation on outside calls and intercom calls)

Speakerphone on/off

Slide-out directory card

Ring and voice volume controls User-programmable ring tone

Self-test function

Hearing aid-compatible (I-WC) handset

Reversible baseplate and cradle hook for wall

mounting

* Optional headset

* Optional handset amplifier

* Background music (two sources)

Microphone mute

l On-hook dialing/monitoring

System hold Station call monitoring (hunt group supervisors

Call barge (break through to a busy station) Do-not-disturb override (the ability to override do-

not-disturb may be enabled/disabled on a station-by- station basis)

Activity release feature (primarily intended for use with the Attendant Computer Console; entering this feature code terminates any current activity and returns the station to idle or dial tone)

Page remove/replace Intercom (extension number) and outside (system

speeddial number) directories

the Extended

and

available only in

Tl and E&M soft-

ware packages Automatic intercom and/or outside call access

ENHANCED SINGLE-LINE SET

User-programmable feature keys for one-key access to feature codes

Timed hookflash (FLASH) key Neon lamp for message waiting indication Ring volume control Selectable ring tone (HI or LO) Hearing aid-compatible

handset

Reversible baseplate and cradle hook for wall mounting

Selectable AC/DC ringer

* Optional handset amplifier

SINGLELINE INSTRUMENT

FEATURES

pushbutton keypad

User-programmable feature keys for one-key access to feature codes

Timed hookflash (FLASH) key

Ring volume control

Hearing aid-compatible

handset

Reversible baseplate for wall mounting

Selectable AC/DC ringer

Optional message waiting indication tones

* Optional handset amplifier

Page l-6

Page 25

256

DIRECT STATION SEZECTION/FWSY

FIELD

* Up to 50

circuits may have units installed

MAINTENANCE

Each unit has 60 keys with LED indicators for one- key access to up to 60 extension numbers (the LEDs show the status of the assigned stations and/or hunt

Up to eight key maps for determining the layout and numbers accessed by the keys

XT-, AT-, or

COMPUTER CONSOLE

computer

CGA, EGA, or VGA monitor and Monitor Interface Card

Headset operation Visual display of system call activity, system direc-

tory, system alarms, date and time, etc. Automatic call priority

Quick, simple call answering and transfer

NOTE: For additional information on the Attendant Computer Console, along with detailed installation and

OVERVIEW

with the console.

System speed-dial number/name programming Remote canceling of do-not-disturb and call forward

for stations served System alarm reporting/clearing Enable/disable system night mode Set date and time of day Attendant recall System do-not-disturb and reminder message pro-

Station feature programming (user name, tenant group, department, and attendant)

Immediate off-hook voice announce (OHVA) calls (requires special programming and an Attendant Computer Console or a DSS/BLF Unit)

Enable/disable background music to external paging speaker(s)

Trunk maintenance feature for taking trunks out of

service and placing them back in again

can be generated at any time by enter-

ing a feature code

Page l-7

Page 26

OVERVIEW

Issue 1, November

256

6.2

Some

of the features have maximum capacities

that are dependent on the availability of system channels and/or circuits. The features with such capacities are listed in the following table.

FEATURE

Paging zones

available

Parties per conference

Simultaneous conferences

System speed dialing

Numbers per system

per number

Station speed dialing

Numbers per Numbers per Numbers per single-line set

CO and/or IC

per entry per entry

CO IC

per station

400

10 10

10 16

Digits per number

FEATURE CAPAClTY

Toll

Extended

Allowed

Account codes

SMDA account codes

Attendants

Attendant Computer Consoles

Hunt

Per system Stations per hunt group Announcement stations per hunt

Overflow stations

Departments per tenant group

user groups

codes par

long

distance numbem 20

per

number

numbers

per number

per code

per

groups

group

Unit

8 4

256

128

Route groups Facility groups

rules (16 total programmable

Facility

per facility group

group

callback requests per

system

Camp on requests per system

Callback (queue) requests per station

on by a station

Stations camped on

camped on to a tnmk group

messages per system

Message

Do-not-disturb messages

Messages par system

System forwarding paths

per

a station

per system

19 24

32 29

1 1

240

286

200

3 4

Auto

DID trunk groups DID entries

Map

station

Secondary

be entered before a station extension

number to qaickly reverse tramfar or hunt group.

groups

assignments

keys per station

or hunt group pilot

up) calla

184

10 16

that station

Page

Page 27

INTER-TELPRACTICES

256 INS’E4LLATION

CONTENTS

MAINTENANCE

SPECIFICATIONS

Issue 1, November 1994

1. Introduction

Cabling And The Main Distribution Frame (MDF)

.........................................................

........................

. Station Connections ...........................................

3. Equipment Cabinet .

B. Functional Description

Connections ............................................... 2-5

..................................................

Cabinet Description ....................................

............................................ 2-6

. Environmental Requirements ......................................

2-2 2-4

2-4

2-6 2-6

2-8

D. System Power Supply .............................................

E. Circuit Cards

....................................................

2-10

4. Station Instruments .................................................. 2-21

. IMX 256 B.

C. IMX 256 DSS/BLF Units D. GMX-256 E. Attendant Computer Consoles

.................................................

................................................

..........................................

2-25 2-27

Units .......................................... 2-28

......................................

2-28

F. Single-Line Sets .................................................. 2-29

G. Off-Premises Extensions

H. Playback Devices .................................................

....................................

2-30

5. Additional System Equipment .........................................

Personal Computer (PC) For On-Site Or Stand-Alone/Remote

Programming

B. Programming PC And SMDR/SMDA Output Device Requirements

System Battery

D. Additional Information ............................................

.................................................. 2-31

...... 2-31

........................................... 2-32

2-32

Page 2-l

Page 28

SPECIFICATIONS

Issue 1, November 1994

256

MAINTENANCE

1. INTRODUCTION

1.1

This section of the manual describes the following

System hardware:

Cabling and the Main Distribution Frame (MDF)

Equipment Cabinet

Power Supply

Circuit Cards Station Instruments Additional System Equipment

1.2

The 256 System has 16 slots available for station

number of

trunk9 that can be installed&pen& on the number and

station

used.

For example, there could be as many as

184 trunks installed (using one Keyset Card [required],

four

Cards [the maximum allowed], and 11 other-

type trunk cards). Or, there could be as many as 256 sta-

(using a combination of digital

IMX AIM keysets, and single-line sets). NOTE: Generally, one station instrument can be in-

stalled on each available station circuit. However, the new

“dual-circuit”

AIM specially designed so that two of these keysets can be installed on a single circuit, if desired. be equipped with any combination of the various keyset models.

1.3 The trunks

and stations are controlled by the cir-

cuit cards in the equipment cabinet.

1.4

A wide variety of station instruments can be used

on the Inter-Tel IMX and GMX-256 Systems, including:

Digital Station Instruments

Standard Digital Keyseta (also referred to as Standard Digital Terminals)

l Executive Digital

Executive Digital Terminals)

display and non-display

(also referred to as

display only

Digital Direct Station Selection/Busy Lamp Field

units

Station Instruments

AIM Keysets (display only)

stations and

has been

Cards can

12-Line

Keyseta (display only)

Dual-Circuit AIM Keysets (display only)

24-Line Keysets (standard and display)

12-Line Keysets (standard and display)

Keysets (non-display only)

Attendant Computer Consoles

Enhanced Single-Line Sets (ESLSs) Single-Line Instruments (SLIs) Industry-Standard Single-Line, Dual-Tone

Multi-Frequency (DTMF) Sets

NOTE: With the proper software package, the Inter-Tel

GX station instruments can also be installed on the IMX 256 System. Refer to Appendix A in the back of the

manual for complete information.

Analog Station Instruments

Keysets (standard and dis-

play)

(standard and dis-

play)

GMX 24-Line Keysets (standard and display)

GMX 12-Line Keysets (non-display only)

GX 24-Line Keysets (standard and display)

Attendant Computer Consoles

Field (DSWBLF) Units (single or tandem) GMX DSWBLF Units (single only) GX DSWBLF Units (single or tandem)

GMX Single-Line Instruments (SLls) GX

Industry-Standard Single-Line, Dual-Tone

Multi-Frequency

Sets

NOTE: For more information on the GX and GMX station instruments, refer to appendixes

Bin the back

of this manual.

Page 2-2

Page 29

INTER-TELPRACTICES

256

INSTALLATION & MAINTENANCE

SPECIFICATIONS

Issue 1, November 1994

1.5 A wide variety of optional system equipment can also be installed, including:

Off-premises extensions (OPXs) and OPXrepeaters,

refer to pages 2-30 and 3-30.

Playback devices, see pages 2-30 and 3-95. Output device(s) for the Station Message Detail Re-

cording (SMDR), error recording, and Station Message Detail Accounting (SMDA) features, refer to pages 2-31 and 3-98.

System battery back-up (uninterruptable power sup ply or standby power supply), refer to page 2-32.

3-99.

Power failure transfer equipment, refer to pages

2-11 and 3-30. Night switch equipment, refer to pages 2-11 and

3-30.

General signaling devices, refer to pages 2-11 and 3-30.

External paging speaker equipment, refer to pages 2-6 and 3-98.

Multi-port voice mail 2-32.

Facsimile machine, refer to page 2-32.

refer to page

Page 2-3

Page 30

SPECIFICATIONS Issue 1, November

256 INSTALLATION & MAINTENANCE

2. CABLING AND DISTRIBUTION FRAME (MDF)

2.1

ments, external equipment, and the station and trunkcir- industry-standard, 66Ml-SO-type terminal blocks and,

if using

jack assemblies. Bridging clips are used on all terminal

blocks to complete the connections. As many as 17 blocks may be needed, including any combination of the following:

blocks for CO trunk terminations and Loop/

Ground Start Card (LGC) and/or Loop Start Card

1-15 blocks for DID trunk terminations and Inward

Dialing Card (IDC) terminations.

1-15 blocks for E&M trunk terminations and E&M

Card @MC) terminations.

1-16 blocks for station cabling terminations and Digital RX-D), Single-Line Card (SLC), and/or Inward Dialing Card (IDC) terminations.

1 block for optional system equipment terminations and ROM Central Processing Unit (RCPU) Card terminations.

between the

station instru-

Cards, eight-conductor

Card (DKSC), Keyset Card (KSC or

modular

mount the terminal blocks, modular jack assemblies,

and any optional peripheral equipment.

2.3

For each keyset, analog DSS/BLF Unit, Attendant

CONNECTIONS

Computer Console, single-line set, and playback device, three-pair (24 AWG) twisted cable is run from

the station location to the MDF. All station cables are terminated on blocks at the MDF and on six-conductor modular jack assemblies at the station locations.

NOTE: It is recommended that three-pair twisted cable and six-conductor modular jacks be used for all station

This

allows the various of station instruments to be easily interchanged if necessary. However, if desired,

single-line DTMF sets,

and playback devices can be installed using one-pair

twisted cable and four-conductor modular jacks.

2.4 Industry-standard, 25-pair telephone cable is used to connect the station blocks to their corresponding station cards. Female

amphenol-type connectors on the cables attach to the male connectors on the station cards in the cabinet.

2.5 To meet Part 15 of FCC Regulations, all station cables must be equipped with ferrite beads. ‘Iwo ferrite “split” beads (two half beads) are installed on each

The beads help to reduce electromagnetic interference

2.2

The MDF requires at least a 4 x

plywood backboard. (Depending on

(1.2 x

the number of stations and trunks installed, a larger backboard may be necessary.) This will allow room to

Each ferrite split bead, which is actually half of

a fall bead, is ordered individually (see REPLACE-

MENT PARTS for the part number). Two split beads are required to form one complete bead.

Page 2-4

Page 31

256 INSTALLATION &

SPECIFICATIONS

Issue 1, November 1994

2.6 The CO, DID, and

CONNECTIONS

trunks are terminated on telephone company RI-type blocks, as required by FCC regulations. Cross-connect cable is used to connect the

RI-type blocks to the CO, DID, and E&M terminal blocks on the MDF. The trunks are then connected to the Loop/Ground Start Cards

Inward Dialing Cards

Cards

using industry-standard, 25-pair cable.

Female 50-pin amphenol-type

Loop Start Cards

and/or E&M

on the cables

attach to the male connectors on the cards.

2.7

To meet Part 15 of FCC Regulations, all trunk

cables must be equipped with ferrite beads.

ferrite

“split” beads (two half beads) are installed on each

cable just below the amphenol-type connector.

The beads help to reduce electromagnetic interference

NOTE: Each ferrite split bead, which is actually half of

a full bead, is ordered individually (see REPLACE-

MENT PARIS for the part number). Two split beads are required to form one complete bead.

2.8

spans are terminated on telephone company

mod-to-mod line cord is used to directly to the

jack on the corresponding

each

span

Card.

(Or, to use the optional DB15 connector instead,

page 3-20.)

It is recommended that gas discharge tubes with silicon avalanche suppressors be installed on all non-T1 trunks for lightning protection. (For

spans, the CSU itself provides the lightning protection.) Also, in areas with frequent occurrences of lightning, it is recommended that the cable between the telephone company termination and the gas discharge tubes be at least 75 feet long (the cable may be coiled up if desired).

2.10 The 256 System has the following trunk characteristics:

CO to

CO to .single4ne set

Ringing voltage Ring frequency Loop currcnt

minimum

cross-connected to modular jack assemblies), as required by FCC regulations. Four-pair, non-reversing,

transient

Page 2-5

Page 32

SPECIFICATIONS

INSTALLATION

MAINTENANCE

3. EQUIPMENT CABINET

EQUIPMENT CABINET DESCRIPTION

3.1 The 256 equipment cabinet houses the system

power supply, the Telecom Motherboard, a 17-slot card-

assembly, and the circuit cards, including: ROM

Central Processing

E&M Cards (EMCs),

Loop Start Cards (LSCs), Digital Keyset Cards

Line Cards (SLCs), and Inward Dialing Cards (IDCs).

3.2 Hquipment cabinet dimensions are as follows:

3.3 Together, the circuit cards in the equipment cabinet perform the switching activities for the system; detect incoming calls, process data-controlled features; control the interaction of station instruments, trunks,

and intercom calls; etc.

3.4 The system is a microprocessor-controlled, pulse code modulation

memory (ROM) and 512k bytes random access memory (RAM) on the ROM Central Processing Unit (RCPU) Card. In addition, each keyset contains a microprocessor that communicates via a Keyset Card with the microprocessor on the RCPU Card.

3.5 The 256 circuitry and software combine to produce an “integrated switching matrix” of 256 time slots (8 PCM highways Ibuses] x 32 time slots). Of the 256 time slots, 32 are reserved for conferencing and four are reserved for

coders are installed (up to four), additional time slots are also reserved. This leaves between 216 and 220 time

slots available for voice channels. (For a diagram of the system voice channel allocation, refer to Figure 2-l on page 2-7.) Therefore, the total number of

pending on the number of additional IYTMP decoders installed on the RCPU Card).

3.6 Whenever there is a change in the system’s circuit

card

one of the PCM highways (also called buses). The indi-

vidual circuits on each card may use only those voice

channels available on the assigned PCM highway. The

Height Width 32.0 in. (81.3 an.)

Weight

channels available ranges from 216to 22O(de-

Cards

Loaded

26.0 in. (66.0 cm.)

23.0 in. (58.4 cm.)

98 lbs. (44 kg.)

146 lbs. (66 kg.)

DESCRIPTION

time-division multiplex

decoders. If additional

all equipped cards are assigned to

Card,

Loop/Ground Start Cards

Cards

de-

software automatically distributes the cards to best possible use of the available voice channels.

3.7 If there is a large mrmber of cards installed, two or more cards may be assigned to the same PCM highway.

The voice channels on each PCM highway are then allo-

cated to the assigned cards for outside calls, intercom calls, and pages on a first-come, first-served basis. Since each two-way conversation requires two voice channels, the maximum number of simultaneous two-way conversations available ranges from 108 to 110.

3.8 If, on a single equipped than there are voice channels, there is a remote possibility that all the voice channels could be in use at one time (see Figure 2-l on page

a user attempting to place a call or page hears reorder

tones and must try again (the system also generates an

error message to indicate that no voice channels were available). Generally, a voice channel will be available

on the second attempt. NOTE: It is possible to equip more ports than there are

available voice channels, especially when installing a

number of

IMX AIM keysets installed two to a circuit. (In

fact, the programmer can equip up to 256 ports.) For total non-blocking applications, it is necessary to limit the number of circuit cards installed in the cabinet. (Refer to

ignating certain circuit cards as non-blocking and gen-

erating voice channel allocation data for

analysis.)

3.9 As many as nine external paging ports can be used

for

Each external paging port requires au available SLC,

NOTE: When installing external paging equipment on

an LGC or LSC circuit, use a paging amplifier that pro-

vides talk battery. When installing external paging

equipment on an SLC circuit, use a paging amplifier that

DOES NOT

Usmg a pagmg amplifier

3.10 The 256 System has two music channels. If de- sired, two different music-on-hold sources (port 1 and

port 2) maybe connected to the RCPU Card. By entering

a feature code, individual keyset users can choose to listen to background music from either of the two music sources. Internal users will also hear music selected source when on hold and when camped on. For outside callers, the source for the Music-On-Hold fea-

spans, single-line sets, digital keysets, or

external paging speaker equipment.

provide talk battery.

highway, there are more ports

talk battery on an

make the

If this happens,

the

Page 2-6

Page 33

256

MAINTENANCE

Issue 1, November 1994

The card slot on the far right (17th slot) of the cabinet is reserved for the RCPU Card. Other than that, any station or trunk card may be placed in any of the remaining 16 slots.

NOTE: Information on the type of card installed in each

Channels Channels

2-l.

Channels

VOICE CHANNEL ALLOCATION

Channels

card slot must be entered through database ruing. See page 5-170 in

3.12 The

Telecom Motherboard power cable, which comes alreadv installed in the equipment cabinet, connects the

power supply to the Telecom Mother-

board.

TIME SLOTS PER HIGHWAY

VOICE CHANNELS

AVAILABLE

SAMPLE ALLOCATlON FOR ONE PCM HlGHWAY

NOTE: The above example shows a sample voice channel allocation for one PCM highway (voice bus) in a heavily-loaded equipment cabinet. The system has assigned one

Card, one Single-Line Card, and one Inward Dialing Card to the same PCh4 highway. If all three cards are designated as “blocking” in database programming, the 48 circuits will vie for the 32 voice channels on a first- come, first-served basis. If, however, the rebalance the cards so that the

Card is assigned to a highway that has no more than 32 equipped

Card is designated as “non-blocking,” the system will

ports. (Refer to PRGG RAMMING, page 5-172, for information on designating certain circuit cards

as non-blocking and generating voice. channel allocation data for

analysis.)

Page 2-7

Page 34

SPECIFICATIONS

Issue 1, November

INTER-TELPRACTICES

MAINTENANCE

REQUIREMENTS

3.13 The equipment cabinet and the station instruments require the following environmental conditions:

Temperature

(Cabinet) O”t0

Temperature 32” to 113’ F -40” to 185” F

(Station Instruments) Relative Humidity 5% to 95% 5% to 95%

(Non-condensing)

up to

10,000 ft. Upto40,OOOR

(12,192 m.)

NOTE: It is recommended that the maximum operating temperature (as stated above)

Therefore, when

the equipment cabinet and

be exceeded.

station iustruments, allow a sufficient margin for error in case of air conditioning failure, routine mechanical maintenance, plant shutdown, etc. As a general guideline, if the conditions are suitable for office personnel, they are also suitable for all equipment and station instrument operation. A properly controlled environment will help to extend the operating life of the equipment.

3.14 While in operation, a fully-loaded equipment cabinet generates approximately 1,000 British Thermal

Units (BTUs) of heat per hour. The maximum amount of

heat generated per individual station instrument is 6.8

per hour.

NOTE: This information is provided so that any cooling needed to meet the proper environmental conditions (as listed in the chart) can be calculated.

D. SYSTEM POWER SUPPLY

3.15 The

system power supply is installed to provide

power to the circuit cards and to all stations. The power

supply itself is comprised of a metal chassis with various modules installed.

3.16 The power supply must have an isolated, dedi-

cated,

57-63H2, single-phase corn-

mercial power source (for details, refer to the first NOTE on page 3-3 in INS’WLLAIION).

3.17 All systems are equipped with one Quad Module and one Master 30V Mod-

ule. Depending on the number and type of keysets installed, one or two Slave 30V Modules may also be needed (see the following paragraph for details). If any AC-ringing single-line devices are to be used, a

Generator Module must be installed. If any SLCs, IBCs,

Module must be installed. (Refer to REPLACEMENT

and

do not use

PARIS for the part num-

bers of the various power supply modules.)

3.18 Based on the number of dual-circuit

AIM

other-type

installed, the fol-

IMX

lowing chart can be used to determine the number of Slave 30V Modules needed. (The programming PC will also display a message if an additional module is needed.) If it is determined that two Slave 30V Modules are needed, a version C power supply chassis and version C power supply modules must be used (see paragraphs

3.21

and 3.22).

(S-line

+ (digital

If y

X 0.0755) +

X 0.060)

(other analog keysets X 0.125)

8, only the Master 30V Module is re-

quired. Ify

8, but

16, one Slave 30V Module is

also required. Ify > 16, two Slave 30V Modules are also

required.

3.19

Located on the front side of the power supply chassis are the ON/OPP power switch, a 1OA or 15A fuse that isolates the AC power source from the system,

and the removable cover plate.

3.20

Located on the back side of the power supply chassis are the AC power cable, all of the connectors for the various power cables, and a grounding lug to connect the equipment cabinet to an earth ground.

Power Supply Modules

3.21

Currently, there are three versions of power sup

ply modules used on the 256 System: (A) part numbers

440.0102-0106, (B) part numbers 440.01% 0122, and (C)part numbers 440.0112- 0115. (Refer to REPLACEMENT PARTS for a complete list of the part numbers.)

3.22 Version A and B

power supply modules are com-

patible with each other, and they use the same chassis.

However, due to numerous design enhancements, ver-

sion C modules and chassis are not compatible with versions A

B. Either use all version A and B power supply modules and chassis, or use all version C modules and chassis.

Do not mix the two @pes.

Page 2-8

Page 35

3.23

The version A Ring Generator Module has a 3

MAINTENANCE

amp fuse, while all other version A power supply modules have 6 amp fuses. Maximum power outputs for each version A module are shown below.

SPECIFICATIONS

1, November 1994

NOTE: For easier power supply module removal, each

version C power supply chassis is shipped with an extractor tool attached to the inside, front cover. The ex-

tractor tool may be used with version B and C modules

only.

MASTER

90VAC

3.24

Except for the Quad Module

Frequency, mI-k

fuse,

output of 23A, and +12VDC output of 4A), version B

and C power supply modules have the same fuses and maximum power outputs. Also, there is only one version C 3OV Module, which can be used as either a master or a slave.

Voltage

3.25 To reduce the effects of

and Spike Protection

AC voltage surges

and spikes that may cause system malfunctions, false logic, and/or damage to the electronic components, a surge/ spike protector is provided. (Refer to REPLACEMENT PARTS for the part number.) Its specifications are:

Clamp voltage transients at 300VDC within 5 nanoseconds when exposed to waveforms as described in the ANSI/IEEE Standard C62.41-1980 (IEEE 587).

Reduces RFI/EMI noise by at least 20dB at frequencies between &I-Ix and 3OMHz.

Battery Back-Up

3.26 To provide back-up power in the event of a power failure or brownout condition, the power supply can have optional battery back-up using a customer-provided

power supply (UPS) unit or a standby power supply (SPS) unit. Refer to page 2-32 for more information.

Page 2-9

Page 36

November 1994

256 INSTALLATION

MAINTENANCE

E. CIRCUITCARDS

3.27 In addition to the power supply, the equipment cabinet houses the Telecom Motherboard and the circuit cards that control and coordinate the functions of the

system. Up to 17 cards may be connected to the Telecom

Motherboard, including:

ROM central promsing unit

Inward Dialing Card @DC)

l-15’ l-15 l-4

Card

Start Card (LGC)

rquircd

Descriptions of the cards are given in the follow-

ing paragraphs. Drawings of the cards are located in the

section.

ROM Central Processing Unit

3.29

The RCPU Card contains the main controlling

Card

r and associated control logic and memory circuits. It is under the control of a program, stored in the ROM, which is activated when the system

is powered up. ROMs containing the system software are installed on the RCPU Card before it is installed in

the equipment cabinet.

330 resources:

RS-232-C (DB9)

connectors (g-pin subminia-

ture “D” male connectors) for connecting SMDR/

output devices and/or a personal computer for programming the system database (see page 2-31 for requirements).

Voltage test points

for checking the system

and AC ring voltage levels. To measure system voltage levels, voltmeter probes are

into the ground test point and the desired voltage test point. Refer to

page 3-45, for details.

Reset

is used to manually reset the system during troubleshooting. This is a software reset nor reset), not a hardware reset (major reset). Pushing this switch does the following:

Preserves the battery-backed database iuforma-

tion, non-conference calls in progress, outside calls being dialed from keyset stations, inter-station messages, calls on individual hold, do-not- disturb messages, and reminder messages. A call on system hold is changed to individual hold at the station that placed it on hold.

Restores

decoders, modem access, and

speech channels, and resets the station clocks to

match the system clock. Updates trunk key, DSS/

key,

key, and feature key lamp

Interrupts system operation, which disconnects

pages in progress, calls ringing in, calls using the conference resources (as described on the next page), and calls using DTMF decoders. Camped- on calls are disconnected and queue requests are canceled.

Terminates system and user programming.

Database back-up battery

lithium

battery) that can support the database for at least two months of accumulated system down time.

Battery voltage test points and check button for

checking the database back-up battery charge. If the battery voltage is not greater than 2.!WDC, replace the battery.

back-up jumper strap for activating the

database back-up battery. The jumper strap should be placed in the ON position (over the top two pins) before the RCPU Card is installed. When the card is taken out of service for repair or storage, the jumper strap should be placed in the OFF position (lower two pins) to preserve the battery charge.

NOTE: Placing the

jumper strap

the

OFF position erases the database.

Male

necting up to two music sources, a power failure

connector for con-

transfer relay, and a general purpose relay:

LED

show main processor operation (CPU ACTIVE), major system alarms (MAJOR ALARM), minor system alarms ALARM), database error occurrences ERROR), database back-up battery connection

(POWER ALARM), and external clock activity (EXTERNAL CLOCK ACTIVE). Refer to TROUBLESHOOTING for detailed LED information.

Page 2-10

Up to two external music sources (such as radios, tape players, etc.) may be connected to the

RCPU Card. AGC circuits on the RCPU Card au-

tomatically hold the volume of each music

source to a predetermined level that is slightly lower than the normal voice volume, as required by FCC regulations. Optimal input level is

page 3-99.

Page 37

INTER-TELlPRACTICES

256 INSTALLATION

MAINTENANCE

SPECIFICATIONS

Issue 1, November

Relay 1, which is the power failure transfer relay

(and cannot be changed),can be used to connect one or more single-line sets to predetermined CO trunks in the event of processor card failure or a power failure. (If ground start trunks are used, the single-line set must be equipped with a

ground start button.) The output is a normally-

open DPDT relay that is held closed during system operation. Additional equipment needed includes a customer-provided PFT relay card and card mounting case. The RCPU Card relay contact ratings are listed below. (See also page

at 125VAC

Relay 2 can be used to activate an external sig-

naling device when a call rings in on assigned

CO trunks. The dry contacts follow the normal

conds off). Ring in for the relay can be programmed for day and/or night modes.

Or, relay 2 can be used for night switch to turn on or off lights, an alarm system, or other devices. The relay, which is activated when an attendant

in the designated tenant group places the system

night mode, causes the swing connection to

move from the “break” to the “make” position. Or, relay 2 can be used for activating external

paging. The relay, which is activated when the paging zone to which it is assigned is accessed by

a station user, causes the swing connection to move from the “break” to the “make” position. This contact can be used to activate the microphone input of an externally-mounted paging

amplifier.

Music-on-hold (MOJX) jumper

straps for enabling

one or both of the external music sources that are heard by callers when they are placed on hold or camped on. If connecting an external music source, place the associated jumper strap in the ON position

(over the top two pins). Then, in the database, each trunk group can be assigned music port 1, music port

2, silence, or tick-tones. Refer to PROGRAM-

MING, page

and

modem interface for re-

mote progr

fault

the

Bell modem is

assigned extension number 270, the 12OO-baud Bell

modem is 271, the 300-baud CCITT modem is 272,

and the 1200-lbaud CCI’IT modem is 273. Any attendant can transfer a call to the modem, or it can be accessed directly using DISA.

for connecting up to 32

parties in multiple conferences. There can be up to

10 simultaneous three-way conferences or four si-

multaneous eight-party conferences. Except for the

fact that there can be only eight parties involved in a single conference, any combination using the 32 dedicated conference circuits is possible. The con- ferencing resources also support the Call Forward, Call Transfer, Station Call Monitoring, and DISA features when two trunks are connected. Conferenc- ing utilizes a zero

loss function so that there is no

substantial loss in voice volume no matter howmany

people are in the conference.

DTMF decoding circuits

(four) are used when single-line sets are dialing and when features such as DISA and Automated Attendant are used. They are also used for the Unsupervised CO Call Continuation feature (as described in paragraph 4.88 on page

4-37).

These four decoders convert DTMF signals to the digital codes used by the system. They are in use only while the dialed number is beii processed, not for the duration of the call. If all four DTMF decoders are busy, the user may camp on.

NOTE: If necessary, up to four additional DTMF decoding circuits can be added to the RCPU Card by installing

Expansion Chips (two chips per circuit; four chips per kit). Refer REPLACEMENT PARIS for the part number.

Tone generating circuit generates DTMF tones

whenever needed by the system (for example, when a station user uses one of the system auto-dial features, such as LCR, Call Forward To The public Network, Station or System Speed Dialing, etc.). The circuit is also used to produce all of the system tones (busy, reorder, do-not-disturb, etc.) heard by digital

dant users. (Analog keysets generate their own sys-

tern tones.)

A-law/mu-law jumper strap for choosing the

method of encoding sampled audio waveforms used in pulse code modulation systems. Domestic telephone companies use the mu-law method. The a-law method is widely used outside of North America.

Page 2-11

Page 38

SPECIFICATIONS

Issue 1, November 1994

MAINTENANCE

Cards

Single-Line Cards

331

Station instrnments are connected to the station

or KSC-Ds) and

cards in the equipment cabinet. Digital keysets are con-

nected to Digital Keyset Cards. Analog keysets, analog

connected to

Single-Line Instruments

Cards. Enhanced Single-Line Sets

standard single-line DTMF sets, and playback devices are

to either Single-Line Cards (AC-ringing instruments only) or Inward Dialing Cards (AC or DC). For more

on Inward Dialing Cards, refer to

page 2-15.

332

Digital

Card (DKSC):

Each DKSC provides up to 16 circuits for connecting digital Each circuit has a self-correcting thermistor to protect the system from damage due to a short circuit in the station cabling. If a short circuit causes a thermistor to open, it will automatically close when the short is removed.

3.33 Up to 50 digital keysets may be equipped with up to four digital DSS/BLF Units each. The units are connected in series to the PC Data Port Module (PCDPM) on the back of the corresponding keyset. Unlike analog units, digital DSWBLF Units do nor require station cabling separate from the keyset’s cabling; instead, they are

334

Each DKSC has a green LED (CARD ON-LINE)

to indicate the card’s functional readiness and 16 green

BUSY) to indicate whether any circuit

on the card is busy (see Figure 3-30 on page 3-48).

3.35

Each

comes equipped with one Digital Signal Processor (DSP) that provides resources for up to 12 shared speakerphones. If desired, a second DSP can

he installed to provide an additional 12 shared speakerphone resources.

NOTE: For information on using shared speakerphones

for digital

3.36

see page 4-40 in

Card

or KSC-D): Each KSC (or

KSC-D, see the following note) provides up to eight cir-

cuits for connecting analog

analog Units, and Attendant Computer Consoles to the system. Up to 50 KSC circuits can be used for installing analog

connected to a single card. Some

have a

from damage due to a short circuit in the station cabling. Newer version KSCs have eight self-correcting thermistors (one for each circuit) instead of the fuse. If a short

circuit causes a thermistor to open, it will automatically close when the short is removed.

NOTE: To install any

the new “dual-circuit” version

IMX AIM keyseta nuo to

Card (KSC-D) must be used (see REPLACEMENT PARTS for the part number). To install

to a

337

either the KSC or the KSC-D can be used.

Each KSC has an LED (CARD ACTIVE) to indi-

AIM keysets one

cate the card’s functional readiness. In addition, dividual circuit on each card has an LED to indicate the circuit’s activity (lit green) or failure (lit red).

Single-Line Card (SLC):

are used for

connecting AC-ringing ESLSs, SLIs, single-line DTMF sets, and playback devices. They can also be used for connecting external paging equipment. Off-premises stations cannot be legally connected to SLCs; instead, Inward Dialing Cards (IDCa) must be used (see page

out-

put. Thisfuse

cannot be

If the fuse

is defective, the entire card must be sent in for repair. Newer version SLCs have a self-correcting thermistor instead of the fuse. If a short circuit causea a thermistor to open, it will automatically close when the short is removed.

NOTE: For optimal performance, it is recommended that voice mail units and automated attendant playback devices be installed on IDC circuits rather than SLC circuits. Doing this mutes any DTMF digits automatically dialed by the system (e.g., those generated when tran- sferriug or forwarding an outside caller to voice mail).

339

Each SLC has an LED

ACTIVE) to indicate the card’s functional readiness. In addition, each individual circuit on each card has an LED to indicate the circuit’s activity (lit green) or failure (lit red).

3.40

Station configuration: Station instrument con-

figuration depends on the number and type of station cards installed in the equipment cabinet. There can be any combination of station cards allowing combinations of keysets in eight-station increments (or 16-station increments if using digital

AIM

and single-line sets or playback

dual-circuit

devices in increments of 16 (using SLCs) or in increments of eight (using IDCs).

NOTE: At least one KSC-D)

be installed to provide an attendant

Card

KSC, or

(equipped with a display keyset or an Attendant Computer Console) that can receive system alarm messages, program system data, act as the attendant for unsupervised CO recalls, etc.

3.41

Each station card circuit is assigned a hardware

address number according to the card’s slot in the equip

Page 2-12

Page 39

256 IN-TION

MAINTENANCE

Issue 1. November 1994

ment cabinet and the location of the circuit on the card. For example, circuit 1.2 is the second circuit on the first card installed in the equipment cabinet.

NOTE: In the default database configuration, there are no keyset circuits assigned for

3.42 When the system is first powered up, the default configuration is used to assign extension numbers to the station circuits. On IMX 256 Systems, card slots l-4 are considered KSCs or KSC-Ds, slots 5-6 are DKSC!s, slots 7-g are unassigned, slots 9-12 are

13-16 are LGCs. On GMX-256 Systems, card slots are considered KSCs or KSC-Ds, slots 9-12 are SLCs, and slots 13-16 are LGCs. Changes to the default con-

figuration can be made through database programming.

installed two to a circuit (e.g.,

dual-circuit JMX

and

and slots

Refer to PRGGRAMMIN G, page 5-170, for more in- formation.

3.43 The system assigns extension number 100 to station circuit 1.1, extension number 101 to station circuit

1.2, and so on to match the initial configuration. Circuit

1.1 is equipped as the primary attendant’s keyset when the system is in the default configuration. If desired, the circuits can be assigned different extension numbers and/or four-digit extension numbers through database programming. Refer to for more information.

NOTE: When

dual circuits, the “B” circuits do not have extension numbers until they are assigned in database program-

ming-

IMX AIM keysets are assigned to

G, page 5-58,

Page 2-13

Page 40

SPECIFICATIONS Issue 1, November 1994

INSTALLATION

MAINTENANCE

Start Cards

3.44 Each LGC and

has circuitry for up to eight

and Loop Start

trunks. LGC and LSC circuits may also be used for installing external paging equipment. LSCs can only have loop start trunks connected to them. LGCs can have either loop start or ground start trunks. Each individual circuit on the LGC has two

straps for designating whether the circuit is loop start or ground start. Individual trunks may be designated as either loop start or ground start in database programming.

NOTE: For each LGC circuit, both jumper straps must be in the proper (LS or GS) position. If the strap settings are mixed, or if one or both of the straps is missing, the circuit will not function properly. Also, when setting the straps, note the unique ordering of the LGC circuits as shown in Figure 3-34 on page 3-55.

3.45

For optimal CO trunk transmission performance, each LGC and LSC circuit should be “hybrid balanced” in database programming. Hybrid balancing refers to selecting the balance network loaded

-that best matches the trunk’s impedance. Re-

fer to PROGRAh4MlN

G, page 5-147, for details.

ideal, loaded, or un-

3.46 Should voice transmit or voice receive volume problems occur, the receive gain

the transmit gain for individual trunks can be adjusted in database programming. Refer to PROGRAMMIN

G, page 5-103,

for additional information.

3.47 Each

and LSC has 16 speciallydesigned fuses soldered to the card to protect it from large voltage surges due to lightning. If a fuse is open (blown), it may mean that other parts of the card have also been dam-

aged. For this reason, open fuses must not be replaced in the field. Instead, the entire card must be returned for testing and possible repair. Failure to follow this policy will void the warranty on the card.

3.48 When the system is in the default configuration, all trunks are configured for M’MF signaling. If necessary, some or all of the trunks can be reprogrammed for dial-pulse signaling through database programming. Although both the LGC and the LSC can use dial-pulse trunks, the pulse circuitry on the LGC is more sophisti-

cated and may provide better performance in uations.

Single-line sets generate their own

tones

when dialing. If used on dial-pulse trunks, both the signals generated by the system are sent to the central

office, which may be a problem if the central office rec-

both. To avoid this problem, single-line sets should be restricted to LCR only when using dial-pulse trunks. Then, only the LCR-generated dial-pulse signals will be sent to the central office.

3.49 With loop start trunks, it is sometimes possible

for the user to attempt to place an outgoing call and

instead be connected to an incoming call on the same trunk. This unintended connection, called glare, is due to the natural switching delay characteristics of the telco

equipment and the system. Previously, if the user did not dial a valid outside number, the glare connection was dropped. The software now allows the incoming call to remain connected, while still protecting against possible toll fraud. A new system-wide programmable op tion, called Drop Incomplete Outgoing Calls, has been

added to the Miscellaneous System-Wide information

screen, as shown on page 5-67 in PROGlWMMING.

3.50 The CO circuits are assigned hardware address

numbers according to the card’s slot in the equipment

cabinet and the location of the circuit on the card. For

example, when using the initial configuration (see para-

graph 3.42), CO circuit 13.4 is the fourth circuit on the

13th card (an LGC) installed.

351

When the system is in the default the first four trunk keys on each keyset are assigned as call keys for incoming call indication/access.

AN-

SWER key may also be used to access incoming calls.) No individual trunk keys or trunk group keys are assigned. Key assignments can be designated in database programming. Refer to PROG

RAMMING, page 5-44,

for more information.

3.52 CO trunk groups may be assigned on a tenant-by- tenant basis. Up to 47 CO trunk groups can be distributed among the tenant

Refer to

Page 2-14

Page 41

256

SPECIFICATIONS

Issue 1, November 1994

Inward Dialing Cards

353

ing (DID) trunks and off-premises single-line stations. Like SLCs (described on page 2-12), IDCs may also be used for connecting on-premises single-line sets and playback devices. In fact, for optimal performance, it is recommended that voice mail units and automated attendant playback devices be installed on IDC circuits rather than SLC circuits. Doing this mutes any DTMF digits automatically dialed by the system (e.g., those generated when transferring or forwarding an outside caller to voice mail).

NOTE: IDCs do not support message waiting applications. If single-line sets with message waiting lamps are installed on IDCs, the lamps will not function.

3.54 On older-version IDCs, each IDC circuit has a 2-pin AC ENABLE jumper strap that must be removed when installing a DID trunk or a DC-ringing station. AC-ringing off-premises stations can be connected directly to IDC circuits provided that both the optional

Module and the optional Ring Generator Module

are installed in the power supply chassis HVRA Units, power supplies, and ring generators are not needed).

3.55 On newer-version IDCs, each IDC circuit has a 3-pin RING SELECT jumper strap that must be set in

either the AC/OPX position (over the bottom two pins)

or the DC/DID position (over the top two pins).

NOTE: When setting the jumper straps on either ver-

sion card, note the unique ordering of the IDC circuits as shown in Figure 3-33 on page 3-53.

3.56 Each IDC can have up to eight DID trunks or up to eight single-line sets, or any combination of the two.

357

DID trunks may be programmed to ring in to in-

dividual stations, multiple stations, or hunt groups. Or,

they may be programmed

ring in as

Ifpro- grammed to ring in at a single station, the DID call will follow any programmed forward.

3.58 DID trunk groups may be assigned on a tenant- by-tenant basis. Up to 11 DID trunk groups can be distributed among the tenant groups. Refer to page 4-15, for more information. Also, DID trunk groups maybe designated as immediate start, wink start,

or delay start in database programming.

3.59 Each IDC has 16 specially-designed fuses sol-

dered to the card to protect it from large voltage surges due to lightning. If a fuse is open (blown), it may mean that other parts of the card have also been damaged. For this reason, open fuses must not be replaced in the field. Instead, the entire card must be returned for testing and possible repair. Failure to follow this policy will void the warranty on the card.

Page 2-15

Page 42

Issue 1, November 1994

256

MAINTENANCE

E&M Cards

3.60

E&M trunks, also called “tie” lines, are special trunks that tie individual telephone systems together. They allow the users of either telephone system transparent access to the users and resources of the other telephone system, often for less than what it would cost to use normal long distance service.

3.61 E&M (literally “ear” and “mouth”) refers to the pair of wires that carry the signals between the trunk

equipment and a separate signaling unit. The M lead

transmits a ground or battery condition to the signaling equipment, while the E lead receives open or ground signals from the signaling equipment.

3.62

If designated for “auto ring-in,” E&M trunks

may

programmed to ring in to individual stations, multiple stations, or hunt groups on the other telephone system. (If programmed to ring in at a single station, the

E&M call will follow any programmed forward.)

3.63 If designated for “dial repeating,” E&M trunks may be programmed to ring in as DISA calls.

3.64 Additionally, LCR may be used to turn what would normally be a long distance call into a local call. For example, when a call is made from one telephone system to a long distance number that is local to the other telephone system, LCR could be programmed to route the call through the E&M network to make a local

call from the other telephone system.

cannot be hybrid balanced). Hybrid balancing refers to selecting the balance network

ideal, loaded, or unloaded -that best matches the trunk’s impedance. Refer to PRGGRAh4MlN G, page 5-147, for details.

3.68 Should voice transmit or voice receive volume problems occur, the receive gain and/or the transmit gain for individual E&M trunks can be adjusted in database programming. Refer to PROGRAMMING, page S-103, for additional information.

3.69 Each EMC has 24 speciallydesigned fuses soldered to the card to protect it from large voltage surges due to lightning. If a fuse is open (blown), it may mean that other parts of the card have also been damaged. For this reason, open fuses must not be replaced in the field.

Instead, the entire card must be returned for testing and possible repair. Failure to follow this policy will void the warranty on the card.

3.70 When the system is in the default configuration,

all E&M trunks are configured for IYI’MF signaling and

dial repeating. If necessary, some or all of the trunks can be reprogrammed for dial-pulse signaling and/or auto ring-in through database programming.

3.71 The

E&M circuits are assigned hardware address

numbers according to the card’s slot in the equipment

cabinet and the location of the circuit on the card. For example,

circuit 13.4 refers to the fourth circuit on the 13th card (an EMC) installed in the equipment cabinet.

3.65

Each EMC has circuitry for up to four E&M

trunks. Each individual circuit on the EMC has two

jumper straps, one for selecting the signaling type

4, or 5) and one for selecting the audio type (2-wire or

The signaling and audio type for each circuit

must also be programmed in the database.

3.66 Although not currently operational, the EMC is equipped with a “make-busy” switch for removing all circuits on the card from service and placing them back in again, The switch is reserved for possible future use.

3.67

For optimal E&M trunk transmission performance, each 2-wire EMC circuit should be “hybrid balanced” in database programming

circuits

3.72 When the system is in the default con.&uration, the

four trunk keys on each keyset are assigned as call keys for incoming call indication/access. (The ANSWER key may also be used to access incoming calls.)

No individual E&M trunk keys or trunk group keys are

assigned. Key assignments can be designated in database programming. Refer to PROGRAMMING, page

for more information.

3.73

trunk groups may be assigned on a tenant- by-tenant basis. Up to 47 E&M trunk groups can be distributed among the tenant groups. Refer to page 4-15, for more information. Also, E&M trunk groups may be designated as immediate start, wink start, or delay start in database programming.

Page 2-16

Page 43

NOTE: The acronym for the not be confused with the special

Card

-should

digital carrier sys-

tem (which operates at twice the data rate of the standard

carrier system). The 256

Card does not support

3.74 The term “Tl” refers to a specific digital method of transmitting voice and data; it is the basic 24-chamtel time-division multiplex (TDM), 1.544 Mb/s pulse code modulation (PCM) system as used in the United States.

3.75 The

standard, which was developed as a method of reducing cabling and increasing transmission quality between distant central offices, is actually a subset of a multi-level Digital Signal (DS) scheme. Inpopu- lar usage,

refers to the

rate as transmitted via any type of media (e.g., copper wire, fiber optics, or microwave).

3.76 Since each

span actually consists of 24 individual circuits (or channels) multiplexed together, it is often less expensive to purchase a single

span than it

is to purchase multiple individual trunks. Each of the 24

circuits can be programmed as a loop start, ground start, DID, E&M, or OPXtrunk (or as unequipped). Any combination is possible.

3.77 “Fractional”

often called

is a special

service where only a portion of the 24 channels are used

and paid for. To implement fractional

(if available),

equip only those circuits that are provided.

NOTE: Currently, the

Card is used to transmit voice

signals only, not data. In the future, data transmissions

over

circuits may also be supported.

3.78 To interface with the public network, each Card must be equipped with a customer-provided, on- board Channel Service Unit (CSU) or a customer-provided, external CSU. If the optional on-board CSU is installed, the programmer must select the line build-out

attenuation, which is determined by the distance to the nearest public network mation is available from the

repeater. (This infor-

provider.) If an external CSU is installed instead, the programmer must select the DSX-1 line length, which is determined by the distance from the

Card to the external CSU. (The card

and the external CSU must be located in the same building, and the cabling between them must be less than 655 feet.)

The on-board CSU can now be purchased

directly from Inter-Tel using part number 440.3004.

3.79

Although most

public network, it is possible to use

interfaces will be with the

Cards to connect

two telephone systems together (e.g., two 256 Systems).

SPECIFICATIONS

Issue 1. November 1994

To do this without CSUs, the two systems must be lo-

cated in the same building and the cabling between them must be less than 655 feet. If each system is equipped with a CSU, they may be located in separate buildings

and the cabling between them may be as long as 6000

feet. (See page 3-34 for more information on connect-

ing two 256

Cards together.)

NOTE: For information on programming various types of

installations, refer to pages 5-122 to 5-129.

In the future, a

span could possibly be used to connect the 256 System to a host computer via a digital multiplexed interface

Also, the

Card has

been designed to interface with the coming Integrated

Services Digital Network (ISDN) features, when available.

3.81 When a

span is used to connect a 256 System to the public network or to another telephone system, it is important that the two endpoints communicate at the same frequency. Since it is practically impossible for both endpoints to have clocks running at identical

and the other endpoint is given “slave” clock status. The slave clock can then extract and lock onto the master clock frequency from the incoming

information.

This master/slave synchronixation is programmed in the 256 System is automatically designated as the slave

clock.

3.82 When information (currently, voice only) is transmitted over a

span, a “framing” bit is added so that the receiving end can recognize where the information begins and ends (as long as the clock circuitry of the

two endpoints is synchronized). Currently, the 256 Sys-

tem supports the two major types of framing schemes in

use today: D4 Super&me, which is the most common, and Extended Superframe @SF), which is required to support future ISDN and DMI features. For

trans-

missions, D4 Superframe is quite adequate. However,

for data transmissions (not currently supported), ESF is

much more reliable and efficient. 383 Digital information is transmitted over the

span as a series of

and

(e.g., .

000 0000

If there are too many consecutive zeroes, the

clock extraction circuitry will not operate correctly.

To prevent this,

carrier equipment limits the number

of consecutive zeroes. The 256 System supports the two major types of xero code suppression schemes in use today: Alternate Mark Inversion

also called

bit-7 stuffing, and Bipolar Eight Zero Substitution

Again, for voice transmissions,

is quite

adequate. However, for 64 kb/s clear channel data transmissions (not currently supported), BSES is required.

Page 2-17

Page 44

SPECIFICATIONS

Issue 1, November

3.84 Like the

repeater distance, the framing scheme type and xero code suppression scheme type are also available from the ing a

span, always request the following information

provider. In fact, when order-

from the Tl provider:

Framing scheme: D4

code suppression scheme:

the

optional

repeater (for determining the line build-out attenuation): O-1599 feet

on-board CSU is to be inshlle~

the

or ESF

public

1600-2999 feet

feet (OdB)

3.85

Each

has circuitry for up to 24 trunk chan-

nels. The 24 channels (or circuits) can be any combina-

E&M trunks, or OPX trunks.

3.86 The

Card itself is equipped with the following

resources:

LED indicators are

each circuit and to show

provided to show the status of

trunk alarms and board- level error occurrences. Refer to the SHOOTING section of this manual for additional LED information.

Audio jack (8-pin, a-conductor modular jack) for

possible future use. NOTE: The audio jack is currently used for engi-

neering diagnostic purposes only.

Alarm relay jack

jack) for connecting optional

vices. The

l Serial port jack

Card relay contact ratings are:

CONTA~

at 30VDC

modular

alarm signaling de-

&conductor

modular jack) for possible future use.

NOTE: The serial port jack is currently used for engineering diagnostic purposes only.

l Tl span jack

jack)

for connecting a single, 24-channel

the

Card. (If this jack is used, do not use the op-

modular

span to

tional DB15 connector also provided on the card.) NOTE: All

spans should be disconnected from

their cards before turning the system power on or off.

l Dual bantam jack(with transmit and receive audio

ports) for connecting

test equipment to the

Card and monitoring the transmit and receive signals.

CAUTION

When a live

span is installed on the

Card, test

equipment should be used for monitoring purposes only. Do not attempt to send signals over either the transmit or receive audio ports on the

Card if a span is installed. Also, be sure the test equipment is set in the “bridge” mode.

Optional Tl span DB15 connector

sub miniature “D” female connector) for connecting a single, 24-channel

span to the

Card.

NOTE: In certain situations (e.g., when using an external CSU equipped with a DB15 connector), it may be more convenient to use the optional DB15 connector instead of the standard RJ48C jack also provided on the card.

Make-busy switch with LED for removing all cir-

cuits on the card from service and placing them back in again. Pressing the switch will light the LED and begin the process of “busying out” each circuit not in use. The circuits that are in use are then busied out as soon as the users hang up. When all circuits are busied out, the make-busy LED and all 24 circuit

flash slowly, and the card can be removed

from its slot in the cabinet.

card is not removed within a certain amount of time, a programmable timer expires and the card returns to normal operation; however, the make-busy LED will then flash rapidly until the make-busy switch is released.

Channel Service Unit

connector for install-

ing the optional on-board CSU Module. If the Card interfaces with the public network, either the on-board CSU Module or an external CSU must be connected to the card.

plug

for indicating whether the on-board CSU is installed. If the on-board CSU is installed, place the jumper plug in the CSU position. If there is no on-board CSU, place the jumper plug in the DSX position. This information must also be programmed in the database.

Line build-out jumper plug

line build-out (LBO) attenuation of the

for selecting the proper

span connected to the card. This selection is necessary only if the optional on-board CSU is installed. If the dis-

tance between the equipment cabinet and the closet

public network

repeater is less than 1600 feet, place the jumper plug in the 15dB position. If the distance is between 1600 and 2999 feet, place the jump

er plug in the 7.5dB position. And, if the distance is

Page 2-18

Page 45

INSTALLATION

MAINTENANCE

SPECIFICATIONS

Issue 1, November 1994

between 3ooO

and 6000 feet, place the jumper plug in the OdB position. This information, which can be obtained from the

provider, must also

pro-

grammed in the database.

Compared to the other trunk cards in the system,

the

Card is very sophisticated and offers some unique

programming options. The information that is pro-

grammed comnwn to all Tl

installed in the sys-

tem includes:

feedbackconfiguration: When a number is

dialed over a

circuit, the user hears the feedback from the signals (either M’MF or dial-pulse, depending on how the circuit is designated). By adjusting the

gain control or the dial-pulse gain control (from -15dB to 15dB), the programmer can determine how loud the signals appear to the user. If the circuit is designated for dial-pulse signaling, the programmer can also select the type of dial-pulse tone the user hears (23 different tones are available).

Error thresholds: The

cal thresholds (number per hour and day) for certain

programmer can set muneri-

per

Card errors. If a threshold is ex-

ceeded, an error is printed on the SMDR report.

Reference clock back-up priorities: One

of the Cards installed in the system must be programmed as the system reference clock (see “reference clock programming” following paragraph 3.88). than one

Card is installed in the system, the pro-

grammer may designate one or more of the cards as a “backup” to the system reference clock. Then, if the

Card acting as the system reference clock fails or

is taken out of service, the next

Card on the back-

up priority list takes over.

3.88 The each

Card type:

information that is programmed

installed in the system includes:

The programmer must select the type of

framing scheme, D4 Superframe or Extended Super- frame (ESF), used by the

span connected to each

card.

Zero code suppression scheme: The programmer

must select the type zero suppression scheme, (bit-7

or Bipolar Eight Zero Substitution

span comected to each card.

PCM encoding law: In pulse code modulation encoding analog signals (sampled audio wave-

forms) into digital signals. In North America and Japan, the “mu-law” method is normally used. In other places, like Europe, the “a-law” method is widely used. The programmer must select both the transmit

and receive method of encoding used by the

Card.

mu-law to mu-law.

Relay activation: If desired, the programmer may

enable the two relays,

line error and

line OK,

on the Tl Card.

Channel

unit

The programmer

must designate whether the optional on-board CSU is installed on the

Card.

database selection

must match the jumper selection on the card.)

Line build-out

If the optional on-board

CSU is installed, the programmer must designate the

attenuation of the

connected to the card. This value is determined by the distance to the nearest public network

repeater. (The database selection must match the jumper selection on the card.)

DSX-1

installed, the programmer must designate the

length of the cabling between the external CSU, or between the

length: If the optional on-board CSU is

Card and the

Card and the other

telephone system to which it is connected.

Reference clock programming:

must first designate whether the

programmer

Card is con-

nected to the public network. If it is, the card is auto-

matically designated as a slave clock (the public

network always acts as the master clock). If the card

is not connected to the public network, but is instead connected to another

Card or a card in another telephone system, the programmer must designate whether the card is a master clock or a slave clock (in relation to the card on the other end).

In addition, one of the

Cards installed in the system must be programmed as the system reference clock. The reference clock then becomes the clock for all the other cards in the system. If there is no Card acting as the reference clock, the Matrix Card becomes the system reference clock.

If a

Card is designated as both a master clock and the system reference clock, the programmer must then designate whether the card’s on-board oscillator is the source of the clock or whether there is an

external clock.

NOTE: The external clock option is provided for possible future use only. For now, always designate

the card’s on-board oscillator as the source of the clock.

Test tone:

digital test tone (1007Ex, OdBM, sine wave) over the selected

circuit. The tone can be verified by mon- itoring the transmit audio port on the card’s dual bantam jack.

Page 2-19

Page 46

SPECIFICATIONS

Issue 1, November 1994

256 INSTALLATION

MAINTENANCE

Error diagnostics: If

generate the current

desired; the programmer can

error counts (by hour and by day) for the selected card. The error counts can be displayed in a graphical or tabular format, printed (stand-alone/remote only), or saved in a file for future reference.

3.89 The information that is programmed

each

(i.e., each of the 24 channels) on the

Card includes:

Circuit type: Each individual circuit can be pro-

grammed

Diital gain

a loop start, ground start, DID,

As with the other trunk cards,

E&M,

should voice transmit or voice receive volume

occur, the programmer can adjust the receive gain and/or the transmit gain (-15dB to 15dB) for individual

DTMF’ or dial-pulse

circuits.

When the system is in the default configuration, all trunk circuits are configured for DTMP signaling. If necessary, some or all of the circuits can be reprogrammed for pulse signaling.

circuits are assigned hardware address numbers according to the card’s slot in the equipment cabinet and the location of the circuit on the card. For example, card, a

3.91

circuit 6.21 is the 21st circuit on the 6th

installed in the equipment cabinet.

Special

requirements: It is recom-

mended that special high-speed data cable with the following characteristics be used for all

installations:

22 AWG Individually shielded two-pair (or with the transmit

and receive pairs run in separate cables or binder

ABAM or PIC (a level-3 cable designed specifically for the T-carrier transmission rate)

Maximum capacitance of lSpF/ft. Maximum attenuation of

ft. at

and 70“ F

NOTE: The programming prompts for

tion and DSX-1 line length assume that proper (with the above characteristics) is

attenua-

cable

used. When transmitting over shorter distances (e.g., when the nearest public network

repeater is less than 2000 feet from the MDF), it may be possible to use standard two- pair voice frequency cable instead; however, the programmer may have to compensate by selecting longer

distances or DSX-1 line lengths. Also,

matter which type of cable is used, the transmit and receive pairs must be shielded from each other (or

in sepa-

rate cables or binder groups).

3.92 If the optional DB15

on the

Card is used in place of the standard RJ48C jack, a flat, 2SAWG, twisted-pair ribbon cable with a maximum capacitance of 16pF/ft. may be used for distances of up to 50 feet (see page 3-20 for more information). For distances longer than 50 feet, use the special high-speed data cable described in paragraph 3.91.

Page 2-20

Page 47

STALLATION

MAINTENANCE

SPECIFICATIONS

Issue 1, November

4. STATION INSTRUMENTS

4.1

A wide variety of station instruments can be used

on the 256 System. The combination of station instru-

ments depends on the number and type of station cards

installed.

4.2 The system capacity for stations is as follows:

Total Station

-Using Digital

-Using &Line

Attendant

Single-Line

Digital units only cL200 Analog units only

* At least one

dant (equipped Console) to

in the default and the primaxy attendant.

l *

Analog puter Consoles for each analog DSS/BLF Unit installed, one less analog or Attendant Computer Console may be installed. (A

circuit

Card must be installed to

a display keyset or an

analog

separate KSC or

AIh4

Only

Consoles

system alarm

circuit 1.1 is designated as a keyset

Units, and Attendant

NOTE: Since most systems will be installed with a variety of station and trunk cards and a variety of station instruments, the maximum station and trunk capacities listed in this manual will rarely be reached.

256

O-256 O-128

O-50-

an atten-

Computer

program system

Therefore,

4.4 For illustrations of the keysets (and other station instruments), refer to the drawings beginning on page 2-33. The feature keys, speeddial keys, call keys, and

station programmable keys shown in the drawings are as they appear when the system is in the default tion.

4.5

The approximate

dimensions of both the Standard

and Executive Digital Keysets are:

Height 3.0 in. (7.6 cm.) Width 7.5 in. (19.1 cm.) Length 9.0 in. (22.9 cm.) Weight 2.3 lb. (1.0 kg.)

4.6

The

and

dimensions

are:

Height 5.5 in. (14.0 cm.) Width 9.0 in. (22.9 cm.) Length 9.5 in. (24.1 cm.) Weight 3.1 lb. (1.4 kg.)

4.7

The

keyset dimensions are:

Height 4.5 in. (11.4 cm.) Width 6.5 in. (16.5 cm.) Length 9.5 in. (24.1 cm.) Weight 2.5 lb. (1.1 kg.)

4.8

All keysets (except as noted) have the following

design features in their default configuration:

12-key pushbutton keypad

4.3 Refer to page 3-71 for keyset installation instruc-

tions. The following digital and analog models are

available:

Standard Digital Keysets (also referred to as Standard Digital Terminals)

Executive Digital Executive Digital Terminals)

Keysets (display only)

12-Line

Keysets (display only)

display and non-display

(also referred to as

display only

8-Line Dual-Circuit AIM Keysets (display only)

Keysets (standard and display)

12-Line Keysets (standard and display)

8-Line Keysets (non-display only)

NOTE: With the proper software package, the Inter-Tel

GX station instruments can be installed on the system. Refer to Appendix A in the back of the manual for complete information.

of feature keys (some of which may be des-

ignated as user programmable)

speed-dial (SD) keys with light-emitting

diode (LED) indicators (S-line keysets do not have

SD keys in the default configuration)

Four call keys with LED indicators for incoming call access and indication

Integrated speakerphone (digital

have

access to shared speakerphone resources)

Ring and voice volume controls (digital and AIM ume levels)

Slide-out directory card

Self-test feature (for testing keyset functions) Hearing aid-compatible

handset

Reversible baseplate for wall mounting and reversible cradle hook for holding the handset on mounted keysets

Page

Page 48

SPECIFICATIONS Issue 1, November

256

MAINTENANCE

Integrated Speakerphone

4.9 A built-in, integrated speakerphone is standard in all IMX analog keysets. All digital keysets have a speaker and a microphone for handsfree intercom reply, but they do not have a true integrated speakerphone. However, the DSP(s) on the associated

can be used to

provide shared integrated speakerphone circuitry. (See

page

for more information.)

NOTE: If there are no DSP speakerphone resources available when a digital keyset user attempts to use the speakerphone, the MUTE key lights and display keysets show NO SPKR AVAIL COME OFF HOOK The user can only monitor the call and must lift the handset to

4.10 The integrated speakerphone allows users to

place and receive outside calls and intercom calls with-

out lifting the handset. Once a call is connected, the key-

set user may speak handsfree over the speakerphone or

lift the handset to speak privately. When using the handset, the user may switch

to the

speakerphone by pressing the SPKR key and replacing the handset. If enabled, pages and/or background music may be broadcast over

the speaker when the phone is not being used.

Liquid Crystal Display (LCD)

4.11 All Executive Digital

ll-line, and S-line) come equipped

and all

AIM

with LCDs. Standard Digital Keysets and standard Ih$X

and ll-line

can be converted to display sets by installing the appropriate LCD Unit (see REPLACEMENT PARTS for the part number). Non-AM

cannot be equipped with displays.

4.12 Each “display” keyset has a liquid crystal display (LCD) with two

lines. The display helps the user to process calls more efficiently and professionally. There are display messages for date and time, numbers dialed, call cost data, reminders, do-notdisturb, forwarding, voice mail processing, incoming calls, station and system status, system alarms, and programming. These displays are indicated throughout the

section of the manual.

4.13

Executive Digital

have four additional

display lines that are associated with the eight menu selection keys that border them. The menu display changes to reflect the functions of the menu

keys. Pressing the key next to the displayed option selects that option. Refer to page 4-41 in for information about the available menu options.

Circuitry

4.14

All newer

and handsets have been designed using “electret” microphone circuitry, rather than the “dynamic” microphone circuitry used on many previous Inter-Tel keyset models.

keysets and

handsets are not electrically compatible with dynamic

4.15

If a dynamic handset is attached to an the handset transmit levels will be noticeably

lower. If an electret handset is attached to a dynamic ther the keyset nor the handset will be damaged.)

4.16

can be identified by the manufacturer’s label on the bottom of the keyset. handsets can be identified by the “El” embossed in the recess for the wall-mount hook (near the receiver).

Optional Headsets

4.17

A headset may be attached to any keyset by unplugging the handset from the handset jack on the base of the keyset, plugging the headset into the handset jack,

and entering a feature code to enable the headset. The SPKR key, which is used to turn the headset on and is lit when placing and receiving calls and unlit when the headset is not in use. The keysets are compatible with industry-standard, four-conductor, modular headsets. The headsets can have

or dynamic micro-

phones, as needed (or carbon-microphone headsets that

are connected to the keyset through an extemally-pow-

ered jackset, which makes the headset

patible). Refer to page 3-77for installation iustructions.

Optional Handset Amplifiers

4.18

The typical handset amplifier is an external de-

vice that plugs into the keyset (where the handset is normally connected); the handset is then plugged into the

amplifier. Receiver voice volume is controlled by tum-

ing a thumbwheel (or similar control) located on the am-

plifier. Such amplifiers are generally equipped with a

transformer that requires a 1lOVAC outlet. Refer to page

3-77 for installation instructions. AIM keysets do not

require handset amplifiers.

Page 2-22

Page 49

INTER-TELPRACTICES

256 INSTALLATION

MAINTENANCE

SPECIFICATIONS

Issue 1, November 1994

Optional Personal Computer Data Port Module

for Diital

4.19

For off-hook voice announce receive capability,

and to allow an optional digital

and/or an optional Modem Data Port Module to be installed, any digital

may be equipped with an optional PC Data Port Module (part no. 550.3014). See page 3-66 for instructions on installing the PC Data Port Module.

NOTE: PCDPMs require AC transformers when they

are connected to DSS/BLF Units only. PCDPMs do nor

require AC transformers when they are used for hook voice announce only or have attached MDPMs. For a diagram of AC transformer requirements, refer to Figure 2-2 on page 2-24.

Optional Modem Data Port Module

Digital

4.20 Digital

equipped with PC Data Port

for

Modules may also be equipped with optional Modem

Data Port Modules (part no. 550.3015). The MDPM contains a jack that can be used to connect a data device (such as a Personal computer

with a modem) to the keyset. Each MDPM is powered by its own AC transformer.

NOTE: MDPMs always require their own separate AC transformers. For a diagram of AC transformer requirements, refer to Figure 2-2 on page 2-24.

4.21

The data device attached to the

must have a direct-connection modem. The modem must be external1 y powered (or capable of operating on 20mA of loop current) and have an device can be used by the associated

CO interface. The data

to communicate with remote data equipment over voice channels being used for CO or intercom calls. Refer to pages 3-78 and 4-101 for installation and operation

Optional Data Port Module for

4.22

IMX 12-line and

and

may be

equipped with optional Data Port Modules (refer to RE- ule contains a four-conductor,

can be used to connect personal computer

with a modem) or a loud

modular jack that

a data device (such as a

ringing adapter (LRA) and an external signaling device (such as a loud bell, horn, flashing light, etc.) to the key- set. The Data Port Module is a source for

of loop current (constant current source). Refer to page 3-78 for instructions on installing the optional Data Port Module.

4.23

Specifications for modem-equipped data de-

vice: The data device must have a direct-connection modem. The modem must be externally powered (or capable of operating on 20mAof loop current) and have an

CO interface. The data device can be used with the

to communicate with remote data equipment over voice channels being used for CO or intercom calls. Refer to pages 3-78 and 4-101 for installation and oper-

instructions.

4.24 Specifications for loud ringing adapter

An external

be connected to the Data Port Module to provide a relay for controlling external signaling devices. The LRA is connected to the Data Port Module, and the external signaling device is con-

nected to the LRA. Refer to page 3-80 for installation

instructions. Each time the keyset rings, the Data Port Module provides This causes the

of loop current to the LRA.

contacts to close and activates the signaling device. The LRA is not affected by the ring tone or the ringer volume of the keyset. The LRA must be capable of operating on 20mA current (approximately

S-Line

4.25 If desired, new

installed two to a circuit

version

AIM

Card

a circuit,

On Dual Ciiuits

IMX AIM

can be

using the new “dual-circuit”

(To install

either the KSC or the KSC-D

can be used.) There are jumper straps on the back of the

keyset to select the baud rate (2400 baud for two to a circuit; 1200 baud for one to a circuit) and to select the circuit position (A or B), depending

how

the keyset’s circuit will be designated in database programming.

4.26 Each

is shipped with a dard (six-foot, three-pair) “flat” line cord for connecting the keyset to its corresponding modular jack assembly. For most installations, this flat line cord is more than adequate. However, when

keysets are installed two to a circuit, low-level crosstalk between the two stations sharing the circuit may occur in certain situations. This is because the wires in a flat line cord are parallel to each other for long distances, thereby providing a susceptibility to audio bleedover. The level of crosstalk is dependent on the voice volume of the users, the length

of the line cord, and the station cable loop length.

4.27 To eliminate this low-level crosstalk, if necessary, replace the flat line cord with a twisted-pair line

stranded

Page 2-23

Page 50

Issue 1, November 1994

Equipped with connectors designed specifically for round, twisted-pair line cord

4.28 Charcoal and grey twisted-pair line cords of vari- ous lengths can be purchased from a local supply house or directly from a cable distributor, such as:

2-2.

= AC transformer required

(for off-hook voice announce only)

256

Interstate Business Park #/806

Fredericksburg, VA 22405

Phone: (703) 899-3777

Pt. No.: LCM65OxL (Grey), LCM66OxL (Charcoal)

INTER-TELPRACTICES

x =

feet; e.g., LCM65O2.5L is a

ft.

cord)

NOTE: require AC transformers when they are connected to DSS/BLF Units only. PCDPMs do

DSS/BLF Units and MDPMs always require their own separate AC transformers. PCDPMs

require AC trans-

formers when they are used for off-hook voice announce only or have attached MDPMs.

Page 2-24

Page 51

MAINTENANCE

Issue 1, November

B. GMX-256KEYSETS

4.29

A maximum of 128 keysets can be connected to

the GMX-256 System. Refer

page 3-81 for GMX-256

installation instructions. The following analog

models are available:

Keysets (standard and dis-

play)

(standard and dis-

play)

8-Line

(standard and dis-

play)

24-Line Keysets (standard and display) 12-Line Keysets (non-display only)

Keysets (standard and display)

NOTE For more information on the GX and Gh4X key- sets, refer to appendixes A and B in the back of this manual.

4.30

For illustrations of the refer to the drawings beginning on page 2-33. The feature keys, speed-dial keys, call keys, and station pro-

grammable keys shown in the drawings are as they

appear when the system is in the default configuration.

4.31 The

dimensions

are:

Height 3.8 in. (9.7 cm.) Width Length

9.2 in. (16.5 cm.)

Weight 2.8 lb. (1.3 kg.)

4.32 The

12-line

and

Ring and voice volume controls (using the VOL Up and VOL DN keys)

Slide-out directory card

Self-test feature (for testing keyset functions)

Hearing aid-compatible

Reversible baseplate for wall mounting

Integrated Speakerphone

handset

4.34 Abuilt-in, integrated speakerphone is standard in all keysets. The integrated speakerphone allows users to

place and receive outside calls and intercom calls with-

out lifting the handset. Once a call is connected, the key-

set user may speak handsfiee over the speakerphone or

lift the handset to speak privately. When using the hand-

set, the user may switch to the speakerphone by pressing

the

key and replacing the handset. If enabled, pages and/or background music may be broadcast over the speaker when the phone is not being used.

Liquid Crystal Display (LCD)

4.35 Each “display” keyset has a liquid crystal display (LCD) with two 16-character lines. The display helps the user to process calls more

and profession-

ally. There are display messages for date and time, numbers dialed, call cost data, reminders, do-not-disturb, forwarding, voice mail processing, incoming calls, station and system status, system alarms, and program-

These displays are indicated throughout the

section of the manual.

4.36 All standard Inter-Tel/DVX keysets can be converted to display sets by installing an LCD Unit. The

use the

LCD

(part no.

828.1166). The 12-line and 8-line keysets use the

LCD Kit (part no. 828.1165).

Height 3.8 in. (9.7 cm.) Width 7.0 in. (17.8 cm.)

Length 9.5 in. (24.1 cm.) Weight 2.5 lb. (1.1 kg.)

433 All

have the following

design features in their default

12-key pushbutton keypad

of feature keys (some of whichmay be des-

ignated as user programmable)

speed-dial (SD) keys with light-emitting

diode (LED) indicators

Four call keys with LED indicators for incoming call

access and indication Integrated speakerphone

437 All newer

signed using “electret” microphone circuitry, rather

than the “dynamic” microphone circuitry used on many

previous Inter-Tel keyset models.

handsets are not electrically compatible with dynamic

4.38 lower. If an electret handset is attached to a dynamic

ther the keyset nor the handset will be damaged.)

439 ufacturer’s label on the bottom of the keyset. Electret handsets can be identified by the “El” embossed in the recess for the wall-mount hook (near the receiver).

Page 2-25

Circuitry

and handsets have been de-

keysets and

If a dynamic handset is attached to an

the handset transmit levels will be noticeably

can be identified by the man-

Page 52

SPECIFICATIONS

Issue 1, November 1994

256

MAINTENANCE

Optional Headsets

4.40 A headset may be attached to any keyset by un-

plugging the handset from the handset jack on the base

of the keyset, plugging the headset into the handset jack, and entering a feature code to enable the headset. The

SPKR key, which is used to turn the headset on and off, is lit when placing and receiving calls and unlit when the headset is not in use. The keysets are compatible with industry-standard, four-conductor, modular headsets that have dynamic microphones, or carbon-microphone headsets that are connected to the keyset through an externally powered namic-compatible). Refer to page

Optional Data Port Module

4.41

All Inter-TeUDVKkeysets maybe equipped with

(which makes the headset dy-

for installation

optional Data Port Modules (refer to REPLACFMJZNT

for the part number). The module contains a four-conductor, connect

modular jack that can be used to

a data device (such as a personal comput-

er equipped with a modem) or a loud ringing adapter

bell, horn, flashing light, etc.) to the keyset. The Data

Port Module is a source for 2O-26mA of loop current

(constant current source). Refer to page

for in-

structions on installing the optional Data Port Module.

4.42

Specifications for modem-equipped data de-

vice: The data device must have a modem. The modem must be externally powered (or ca-

pable of operating on

of loop current) and have an

CO interface. The data device can be used with the

to communicate with remote data. equipment

over voice channels being used for CO or intercom calls.

Refer to pages

and 4-101 for installation and oper-

ation instructions.

4.43

An external

for loud ringing adapter

be connected to the Data Port Module to provide a relay for controlling external signaling devices. The LRA is connected to the Data Port Module, and the external signaling device is connected to the LRA. Refer to page

for installation instructions. Each time the keyset rings, the Data Port Module provides This causes the

of loop current to the

contacts to close and activates the signaling device. The LRA is not affected by the ring tone or the ringer volume of the keyset. The

must

be capable of operating on 2OmAcurrent (approximate-

ly 2ovDC).

Page 2-26

Page 53

256 INSTALLATION &

Issue 1. November 1994

C. IMX 256 DSWBLF

4.44 The

256 System can have as many as 50

ample, there could be a maximum of 50 digital keysets

(i.e., DKSC circuits) equipped with up to four digital 50 KSC or KSC-D circuits equipped with one analog of the two using up to 50 keyset circuits.

4.45 Each unit provides one-key access to 60 numbers. The

can be station extension numbers, hunt group pilot numbers, system feature codes, or system speed-dial numbers.

4.46

Digital

Units are physically attached to and programmed to be used with specific digital key- sets. The units are connected in series to the PC Data Port Module (PCDPM) on the back of the corresponding

Unlike analog units, digital

require station cabling separate

Units do

the cabling; instead, they are powered by their own AC transformer. If desired, all units can be connected to

fer to page 3-90 for digital

Unit installation

instructions.)

NOTE: Digital

Units always require their own separate AC transformers. For a diagram of AC transformer requirements, refer to Figure 2-2 on page 2-24.

4.47

Analog

Units are programmed to be used with specific analog keysets, but are not physically attached to the among several assigned to one

The units can

distributed or, if desired, they can be Each unit requires a KSC or

KSC-D circuit that is separate from the keyset’s circuit. If50 station circuits are used for analog DSS/HLFUnits, 50 fewer analog

and/or Attendant Computer

Consoles can be installed. Up to four analog units

installed on a single

for

DSS/BLF Unit installation instructions.)

4.48 For illustrations of the station instruments), refer to the drawings

Card. (Refer to page 3-92

(and other

page 2-33.

4.49

Digital

Unit dimensions are:

Height 3.0 in. (7.6 cm.)

Width 7.5 in. (19.1 cm.) Length 9.0 in. (22.9 cm.) Weight 1.7 lb. (0.8 kg.)

4.50

DSS/HLF Unit dimensions are:

Height 5.5 in. (14.0 cm.)

Width 9.0 in. (22.9 cm.)

Length 9.6 in. (24.1 cm.)

Weight 2.0 lb. (0.9 kg.)

4.51

As stated earlier, each

Unit provides

one-key access to up to 60 numbers. These numbers can be station extension numbers, hunt group pilot numbers, or system feature codes, or system speed-dial numbers. The layout of the keys and the numbets they access are

assigned using one of up to eight key maps in database

4.52 Together, the lamps in the keys create a busy lamp field that indicates the status of each station or hunt group assigned to the keys. The LED indicator in the key is solidly lit when the associated station is busy, flashes slowly when the station is in do-not-disturb, flashes fast when the station has a call ringing in, or flutters continuously if the station is causing a SDXI’ION OFF-HOOK

system alarm. If assigned to a hunt group, the LED indi-

cator is solidly lit when all stations in the hunt group are unavailable (busy, forwarded, in do-not-disturb, or removed from the hunt group) and it flashes fast when a

call is camped on to a hunt group.

Page 2-27

Page 54

SPECIFICATIONS

Issue 1, November 1994

INTER-TELPRACTICES

MAINTENANCE

D. GMX-256 DSWBLF UNITS

453 There can be a maximum of 50 Direct Station Selection/Busy Lamp Field

Units installed on the GMX-256 System, including any of the follow- illg:

GMX GX DSS/BLF Units

Units -single or tandem

Units -single only

single or tandem

NOTE: For more information on the GMX and GX station instruments, refer to appendixes A and B in the back

of the manual.

4.54 A DSS/BLF Unit consists of either a single unit or two units connected together to form a tandem unit.

Each single unit provides one-key access to 6Onumbers, while tandem units provide access to 120 numbers. The numbers can be station extension numbers, hunt group pilot numbers, system feature codes, or system speed-

dial

4.55

The

single/tandem units can be distributed

among several

or, if desired, they can be assigned to one keyset. (Refer to page 3-93 for DSS/BLF Unit installation instructions.)

4.56 DSS/BLF Units are programmed to be used with specific keysets, but are not physically attached to the

rate from the keyset’s circuit. If 50 station circuits are used for DSS/BLF Units, 50 fewer keysets and/or Attendant Computer Consoles can be installed. Up to four units can be installed on a single

457 For an illustration of the other

station instruments), refer to the

drawings beginning on page 2-33.

Card.

Unit (and

Unit

dimensions are:

Height 3.8 in. (9.7 cm.) width 7.0 in. (17.8 cm.) Length 9.5 in. (24.1 cm.) Weight 2.5 lb. (1.1 kg.)

4.58 As stated earlier, each single DSS/BLF Unit provides one-key access to up to 60 numbers. These numbers can be station extension numbers, hunt group pilot numbers, or system feature codes, or system speed-dial numbers. The layout of the keys and the numbers they

access are assigned using one of up to eight key maps

(12 in expanded systems) in database programming. The intercom number/key assignments are programmed in two lists, DSS 1 and DSS 2. Single DSS/HLF Units

can be assigned with either list. Tandem Inter-Tel/DVK units are assigned with the DSS 1 list, then an internal strap is set to identify the key arrangement each individual unit will use.

4.59

Together, the lamps in the keys create a busy

lampfieldthatindicatesthestatusofeachstationorhunt group assigned to the keys. The

indicator in the key is solidly lit when the associated station is busy, flashes slowly when the station is in do-not-disturb, flashes fast when the station has a call ringing in, or flutters continuously if the station is causing a STATION OFF-HOOK system alarm. If assigned to a hunt group, the LED indicator is solidly lit when all stations in the hunt group are unavailable (busy, forwarded, in do-not-disturb, or removed from the hunt group) and it flashes fast when a call is camped on to a hunt group.

COMPUTER CONSOLES

4.60 The Attendant Computer Console is an compatible personal computer that is connected to an available KSC or KSC-D circuit (they cannot be connected to DKSC circuits). The computer contains a proprietary circuit card and special software. It is primarily designed for use by attendants of larger 256 Systems those systems with so many station users that it would make using DSS/BLF Units somewhat awkward. However, due to its enhanced functionality, including electronic text messaging and directory dialing, the

Attendant Computer Console is also an attractive option for smaller 256 Systems as well.

4.61 Attendant Computer Console design features include:

IBM XT-, AT-, or 386-compatible processing unit

CGA,

or VGA monitor and Monitor Interface

Card 122-key custom keyboard

Headset operation

Specially-designed circuit card and interface software

NOTE For additional information on the Attendant Computer Console, along with detailed installation and programming instructions, refer to the manual included with the console.

Page 2-28

Page 55

MAINTENANCE

SPECIFICATIONS

Issue 1, November 1994

F. SINGLE-LINE SETS

4.62 Up to 240 single-line sets may be installed on the 256 System. The models available are:

-available on

Single-Line Instruments

Industry-standard, single-line DTMF sets

4.63 For illustrations of the ESLS and SLI (and other station instruments), refer to the drawings beginning on page 2-33. The feature keys shown in the drawings are

as they appear when the system is in the default conflgu-

ration.

4.64 The dimensions of the ESLS are: Height 45 in. (11.4 cm.)

Width 6.5 in. (16.5 cm.)

Length 9.5 in. (24.1 cm.)

Weight 2.2 lb. (1.0 kg.)

4.65 The dimensions of the SLI are: Height 3.5 in. ( 8.8 cm.)

Width

7.5 in. (18.8 cm.) Length 9.0 in. (22.5 cm.) Weight 2.0 lb. (0.9 kg.)

4.66 ESLS design features include: Nine user-programmable feature keys and a

programmable timed hookflash (FLASH) key A neon light for message waiting indication

A ring volume thumbwheel control

Hearing aid-compatible

handset (may be equipped with a handset amplifier as described on page 2-22)

Reversible baseplate and cradle hook for wall mounting

A ringer that can be set for AC or DC by moving a

jumper strap located on the control board

Selectable ring pitch jumper strap (HI or LO) on the control board

4.67 SLI design features include: Four user-programmable feature keys and a

programmable timed hookflash (FLASH) key

A ring volume thumbwheel control

l Hearing aid-compatible

handset (may be equipped with a handset amplifier as described on page 2-22)

Reversible baseplate for wall mounting

jumper strap located on the control board

simply by lifting the handset and pressing a feature key (or entering a feature code). Other features are accessed using a combination of a hookflash (FLASH key) and a feature key or code. Refer to the

section of

this manual for details.

4.69

When single-line sets are connected to

Line Cards

ringers

they must be equipped with AC

and

have internal jumper straps that can be moved to set the ringer for AC or UC). When connected to Inward Dialing Cards sets may have AC ringers by setting the

single-line

circuit for AC ringing, or they may have DC ringers by setting the circuit for DC ringing. (Refer to page 3-95 for single- line set installation instructions.)

NOTE: IDCs do not support message waiting applications. If single-line sets with message waiting lamps are installed on IDCs, the lamps will not function.

Page 2-29

Page 56

Issue 1, November

256 INSTALLATION

MAINTENANCE

G. OFF-PREMISES EXTENSIONS

4.70 An OPX is an AC ringer-equipped BSLS, SLI, or single-line

set that is placed in a remote location and connected to the system through a telephone company OPX circuit or a customer-provided circuit.

4.71 Off-premises stations are

Dialing Cards (up to eight circuits on a card) or

connected to Inward

Cards (up to 24 circuits on a card). If necessary, the receive gain and/or the transmit gain for each circuit can be ad-

justed in database programming (see page 5-30 for de-

tails). NOTE:

connecting

Inward Dialing Cards

must be used. FCC regulations prohibit connecting

4.72 The OPX circuits provided by the telephone company are identified with Facility Interface Codes

Class A,

or Class C,

(fully protected

private circuit).

impedance does not exceed a loop measurement of 800 ohms (loop of 15,600 feet using 24AWG wire), a customer-provided circuit between the

remote location and the system may be used.

4.73

The

loop limitation is usually suitable for accessing on-premises stations from off-premises stations. However, for applications where one off-pre-

mises station will be calling another through the station

card, the impedance between the two off-premises sta-

tions (both circuits added together) must be less than

800 ohms (loop measurement). In this situation, a Class

A or B FIC circuit is preferable.

4.74 When an IDC circuit is designated for OPX use in database progr

(see page 5-170), its voice volume levels are increased approximately 3dB over normal single-line set voice volume levels. This is an

attempt to compensate for any loss in the external OPX circuit. However, in certain off-premises applications,

the voice volume levels may still be unacceptable. This

degradation in voice volume is due to the natural voice frequency range limitations of the telephone company or customer-provided circuit. To increase the frequency

range, installation of a two-wire, negative impedance

repeater unit is recommended. Such units typically provide from O-15 decibels of voice volume gain and allow regulation of the gain in each direction when simulta-

neous voice transmission oczurs. The switching sensi- tivity on the unit should also be adjustable.

4.75 The repeater unit is installed at the MDFbetween the station block and the cabling to the off-premises station. (Refer to page 3-30 for OPX installation instructions.) When ordering a repeater unit, consult with the

supplier for ordering the proper mounting shelf and

power supply for the unit. Additional information on op-

erating and adjusting the repeater unit is generally included with the product.

H. PLAYBACK DEVICES

4.76 A playback device is an answering machine that

answers the call, plays a message, and then disconnects from the call. Playback devices are installed like siugle- line sets, using three-pair twisted cable and six-conductor modular jacks (or, if desired, one-pair twisted cable

and four-conductor modular jacks). The device must be capable of the following functions: detect ringing, pro-

vide ring trip, and automatically disconnect when the

announcement is completed.

4.77 Because most playback devices respond to AC ring signals, they are attached to SLC circuits or IDC circuits that are set for AC ringing. If the playback device responds to DC ring signals, an Inward Dialing

‘Card circuit that is set for DC ringing must be used. (Re-

fer to page 3-95 for playback device installation instructions.)

NOTE: For optimal performance, it is recommended

automated attendant playback devices be installed on

4.78

Hunt groups can have two special stations that

help process calls: announcement stations and overflow

stations. These stations can be equipped with station in-

struments or playback devices. Automated attendant

stations can also be (See

page 4-17.)

with playback devices.

4.79 The playback device is programmed as a regular single-line station and is assigned an extension number. If the device is sensitive to camp-on tones and disconnects calls, the programmer can disallow the camp-on tone for that station circuit (refer to PROGRAMMING, page 5-30).

Page 2-30

Page 57

MAINTENANCE

. SPECIFICATIONS

Issue 1, November

5. ADDITIONAL SYSTEM EQUIPMENT

A. PERSONAL COMPUTER (PC) FOR

ON-SITE OR STAND-ALONEIREMOTE

5.1

The device used for on-site or stand-alone/remote programming must be an IBM AT+ompatible PC with a minimum: drive, Sy4-inch (1.2MB) or 3%~inch (1.44MB) double sided/high density floppy disk drive, 640k RAM (with minimum graphics monitor. A grogramming mouse is optional (if used, install on au unassigned COM port). For remote maintenance, a 3CKLbaud or 1200-baud modem is also needed. (See PRCGRAMMIN tional information on remote system maintenance.) To

connect the PC to the RCPU Card for on-site program-

ming, refer to the following information.

PROGRAMMIN

OUTPUT DEVICE REQUIREMENTS

5.2 The on-site programming PC and the optional output device(s) for the Station Message Detail Recording

(SMDR) and Station Message Detail Accounting (SMDA) features must have the characteristics de-

scribed in the following paragraphs.

5.3 To connect a PC or an output device to one of the serial ports

Card, one end of the cable between the two must have an connector. The other end of the cable must be compat-

ible with the output device. Consult the owner’s guide for the device to verify that the pin functions are the same as those shown in the following chart. Ifnecessary, rewire the connector on the device to match the requirements.

Data (RXD)

Transmit

Data Terminal Ready (M-R)

Signal Data Set Ready (DSR)

To Send (RIB)

Clear To Send (Cl-S) Ring

= steady signal

5.4 The following cable can be created to connect one

of the found on some PCs and output devices.

available memory on the hard disk

available),

3.3, and an EGA

G, page 5-3, for addi-

GPC AND

A or

B) on the RCPU

female

Signal to 256

Data

Reference Ground

Signal to 256 Signal to

(always

256

2 3

6 7

ports on the RCPU Card to the DB25 port

2 3 7

6 8

The following cable can be created to connect one

of the

ports on the RCPU Card to the

port

found on some PCs and output devices.

5.6 When the system is in the default conf@uration, the 256 output device ports (PGRT A and PORT B) are enabled for “software” handshaking. Most output devices are designed for software handshaking, which is the use of “X-ON” and “X-OFF” characters to indicate readiness to send or receive data. Refer to the device’s

operating manual to determine if it uses X-ON/x-OFF characters.

5.7 If the device does not support X-GN/X-OFP characters, hardware handshaking may be enabled (see

page 5-169). When enabled for hardware handshaking, signals are sent over the comrec- tor pins to indicate readiness to send or receive data. The 256

port will send a logic true

on pin 4 (Data Terminal Ready) and pin 7 (Request To Send) when it is ready to receive data. In addition, the 256 DB9 port will monitor pin 6 (Data Set Ready), pin 8 (Clear To Send), or both (depending on how the 256 System is programmed) and will only send data if it receives a logic true (>+5V) over the programmed pin(s). port receives a logic false

to indicate that the

256 DB9 buffer on the attached device is full, it will not send data.

5.8 To meet Part 15 of FCC Regulations, all RS-232-C cables must be equipped with ferrite beads. Two ferrite “split” beads (two half beads) are installed on each cable just below where the cable connects to the system. The

Page 2-31

Page 58

SPECIFICATIONS

1, November 1994

MAINTENANCE

beads help to reduce electromagnetic interference

NOTE: Each ferrite split bead, which is actually half of

a full bead, is ordered individually (see REPLACEMENT PARTS for the part number). Two split beads are required to form one complete bead.

5.9 The on-site programming PC and SMDR/SMDA output devices must communicate at 110, 300, 600,

or 19200 baud. (NOTE: The

19200 baud rate is for outgoing data only. The maximum programming baud rate is 9600.) System baud rates are set independently in database programming.

include:

The data format must be 8 bit standard ASCII.

Parity is off (ignored). Communication is full duplex.

There is one start bit and one stop bit.

5.10

The output devices, whether used for SMDR or SMDA, must be able to print reports with a width of 80 characters. The devices must not have cables longer

than 50

5.11

feet (15 meters).

SYSTEM

BATTERY BACK-UP

To provide back-up power in the event of an AC power failure or brownout condition, the 256 System power supply can have optional battery back-up using a

customer-provided uninterruptable power supply (UPS)

unit or standby power supply (SPS) unit.

5.12 It is recommended

a power supply unit with

the following characteristics be installed:

rating, which results in longer discharge rates; the volt-

age level remains the same as a single string.

5.14

Batteries must be fully charged when installed. Charge each individually using a constant-voltage, current-limited charger with less than three percent ripple. The charge voltage per cell must be set according to the manufacturer’s specifications. Be careful not to damage the batteries by overcharging them. For example, new

Globe brand batteries require 25 days of float voltage or

25-30

discharge cycles to attain full capacity. Initial ca-

pacity might only be 80 percent of rated capacity.

5.15

batteries should be of the same age and AH

rating. Some manufacturers date batteries by stamping

them with a date code. For example, Globe stamps their batteries with a code such as

where 4 = the last digit of year, 10 = the month, and B = the type of electrolyte. If a battery in a string needs to be replaced, the age of the string will determine if a fresh battery can be added. If the string is two to three years old, adding a fresh battery will reduce the life of the entire string. This is because a fresh battery will be overcharged, while the older batteries are undercharged.

5.16

Batteries may give off explosive and/or corrosive gases. To reduce the effects of this gas, place the batteries (or battery compartment) in a well-ventilated room and coat the terminals with an anti-corrosive agent. Avoid storing batteries; they will self-discharge and their capacity decreases with age. If you must store batteries, recharge them every six months. Recharge time may vary depending on the charger’s current limit and the battery’s state of charge.

D. ADDITIONAL INFORMATION

Sine wave output Transfer time of less than 20 milliseconds

Output rating of 700 Watts (minimum needed for a fully populated system; for smaller system require-

ments, contact Customer Support) External or internal batteries Low voltage cutoff circuit of 105VAC (minimum)

NOTE: Even if the power supply unit has the specifications listed above, it

be guaranteed that it will work properly with the 256 System. Contact Customer Support for a listing of approved IIPS/SPS power sup plies and installation instructions.

5.13

Batteries comrected in series form a “string.“The voltage of the string is equal to the sum of the individual battery voltages. For example, five 6V batteries connected in series form a 30V battery pack. If desired, connect two strings in parallel to double the amp/hour

Page 2-32

5.17 If necessary, contact Inter-Tel Customer Support for additional information on the optional equipment listed below:

OPX Repeaters

and External Signaling Devices Standby Power (system battery back-up) Multi-Port Voice Mail Facsimile Machine

Lightning and AC Surge Protection Multiple External Paging Zones and

Speakers Headsets Playback Devices

Power Failuxe Transfer

Page 59

256

MAINTENANCE

SPECIFICATIONS

Issue 1, November

FIGURE

EXECUTIVE DIGITAL KEYSET (also called Executive Digital Terminal)

HEARING AID-COMPATIBLE

(HAC) HANDSET

INTERNAL

SPEAKER

LCD

SIX 8 LCD

SELEG

2 LCD FEATURE

INSTALLATION

1, November 1994

1. Introduction

2. System Installation Outline

3. .

Establish Suitable Environmental Conditions For The System B. Assemble The Necessary Tools Aud Supplies .

Plan Station Locations And Types Of Station Instruments D. Assemble The Optional Equipment

4. Station Cabling Running Cable

B. Terminating The Cables At Station Locations

.........................................................

............................................ 3-2

Checklist

............................................. 3-3

.......................... 3-3

..................................

...................................................... 3-6

................................................... 3-6

.........................

5. Assembling The Main Distribution Frame (MDF) Backboard

Connecting The Trunk Cables To The MDF

B. Connecting

Spans To The MDF

.................................. 3-17

C. Connecting Station Cables To The MDF

D. Station Loop Resistance Test

....................................... 3-29

E. Connecting Optional Off-Premises Extensions (OPXs) .

Connecting The RCPU Card To The MDF G. Connecting Optional H. Connecting

256 Systems Together Using

6. Equipment Cabinet Installation A. Unpack The Equipment

Alarm Relay Devices To The MDF

........................................ 3-35

........................................... 335

B. Check The Equipment Cabinet

Install The Power Supply Modules

D. Install The Circuit Cards

.......................................... 3-44

E. Check The Circuit Card Installation F.

Complete The Equipment Cabinet Installation

.................................. 3-39

.................................

..........................

............................. 3-21

..................

............................ 3-30

Cards

.................

.........................

........................

...........

..............

...............

.............

3-2

3-3 3-4

3-7 3-9

3-30 3-33

3-34

3-35

3-61

7. Station Installation ...................................................

IMX 256 Digital Keyset Installation

IMX 256 Analog Keyset Installation C. GMX-256 Analog Keyset Installation D. IMX 256 Digital DSS/BLF Unit Installation

IMX 256 Analog DSS/BLF Unit Installation

GMX-256 Analog DSS/BLF Unit Installation G. Attendant Computer Console Installation

H. Single-Line Set And Playback Device Installation

8. SMDR/SMDA Output Device Installation

9. External Paging Equipment Installation

10. External Music Source Installation

11. Preventative Maintenance

12. Post-installation Checklist

............................................. 3-99

............................................. 3-100

.................................

................................. 3-71

................................ 3-81

...........................

.......................... 3-92

......................... 3-93

............................ 3-93

...................... 3-95

................................

.................................

...................................... 3-99

Page 3-l

3-62 3-62

3-90

3-98 3-98

Page 76

INSTALLATION

Issue 1, November 1994

256 INSTALLATION

MAINTENANCE

1.1 This section describes the recommended proce-

dures for installing the 256 System hardware. Refer to

for hardware descriptions.

2. SYSTEM

2.1 System installation is performed in the following order. Detailed instructions and figures for each step are located throughout the J.NSTAL,LAlTON section.

Plan the installation, including the equipment cabinet and main distribution frame (MDF) location, station locations, cable runs, and optional equipment.

Run cables to the keysets, analog Direct Station Selection/Busy Lamp Field

Attendant Computer Consoles, single-line sets, and playback devices. Run wiring to any optional equipment, such as power failure transfer

external paging equipment, general

signaling devices, music sources, etc.

Units,

Perform the station loop resistance test for each station cable.

Assemble the equipment cabinet.

the system power supply modules in the

power supply chassis. Install the circuit cards in the equipment cabinet

and connect them to the cables

that run from the MDF blocks (or MDF modular

jack assemblies).

Install the station instruments and any optional station equipment, such as headsets, handset amplifiers, and Data Port Modules.

Install any optional system equipment, such as output device(s) for station message detail recording (SMDR) and station message detail accounting (SMDA), external paging network,

external music source(s), voice mail, etc.

Refer to the

(13)

manual to cont&ure and program the system.

cords)

Terminate the station cables on modular jack assemblies at the station locations.

Mount the MDF backboard and assemble the terminal blocks on the backboard. If any

are to be installed, terminate them on eight-con-

ductor modular jack assemblies at the MDF. NOTE: The

the standard the

Card. However, in certain situations (e.g., when using an external CSU equipped with a DB15 connector), it may be more convenient to use the card’s optional DB15 connector instead. Refer to page 3-20 for more information.

Connect the trunks, station cables, and circuit card cables to the corresponding terminal blocks

(or, for

span is typically connected to

modular jack provided on

modular jack assemblies).

spans

NOTICE

This LUWGMX256 Installation and

Manual

on the proper installation practices for the 256 Sys-

tem. This manual does

instructions for premises wiring practices as dictated by the National Electrical Code, which includes, but is not limited to, cable layouts, cable installation, AC power installation, proper AC grounding, eliminating or preventing external inter-

ferences (including, but not limited to, RFI, EMI,

lightning, AC power disturbances, static discharge),

and other telephony practices standard within the in-

dustry. Cable installers, electricians, and field technicians are expected to be properly trained and, if

applicable, licensed in their trade practices.

256

tance.

certified field technicians

provide stepby-step

is required for technical assis-

Page 3-2

Page 77

256

INSTALLATION &

CHECKLIST

3.1 To make installation easier, use the checklist on the following pages when preparing to install the sys-

tem. (Hardware specifications are included in the

CONDITIONS FOR

THE SYSTEM

Locate the equipment cabinet within 5 feet (1.5 me-

ters) of an isolated, dedicated,

single-phase commercial power

source. NOTE: This musf be an isolated, dedicated AC cir-

cuit for proper operation. All three wires (power, neutral, and ground) must be run separately from the outlet to the breaker panel without being bonded to any other wire or circuit. DO

NOT

plug any other

equipment into this outlet. To maintain the protection provided by the isolated, dedicated circuit, the length of the AC power cord limits the distance between the power supply and the outlet; DO

an extension cord. Also, to protect the system from AC voltage surges, a surge/spike protector is

supplied with the system (refer to page 2-9 for speci-

fications).

Select the equipment cabinet location to minimize

cable run length. Station instruments connected to

the system must not exceed the limits (using

24AWG wire) listed in the table on page 3-29. The

ohm values are loop measurements; feet

ues are the maximum one-way measurements from

the equipment cabinet.

Temperature Equipment Cabiiet o”to

Temperahue Station Instruments

Relative Humidity 5% to 95% 5% to 95%

Altitude

32” to 113’ F

45°C

up to 10,ooo ft.

to 185’ F

to 185” F

NOTE: It is recommended that the maximum oper-

ating temperature (as stated above) never be exceed-

ed. Therefore, when installing the equipment

cabinet and station instruments, allow a sufficient margin for error in case of air conditioning failure, routine maintenance, plant shutdown, etc.

a general rule, if conditions are suitable for office personnel, they are also suitable for all equipment and station instrument operation. A properly controlled environment will help to extend the operating life of

the equipment.

safety specification

telephone equipment:

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 termi-

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

Use caution when installing or modifying telephone

lines.

Do not expose the equipment cabinet location to di-

rect sunlight, high humidity, heat, dust, or strong magnetic fields (such as those generated by heavy motors and large copy machines).

The MDF requires a 4 x 8-foot (1.2 x

plywood backboard. This should provide sufficient room for all blocks and peripheral equip ment.

For cooling purposes, provide ample air space

around the equipment cabinet assembly (minimum

one foot on all sides). Other than the programming

PC, do not place or store items on top of the equip

ment cabinet.

The SMDR/SMDA output device(s) must not have

cables longer than 50 feet (15 meters).

Locate the equipment in a climate-controlled room

with the following environmental conditions:

Page 3-3

ASSEMBLE THE NECESSARY TOOLS AND SUPPLIES

Industry-standard,

twisted cable to run instruments, including:

three-pair (six-conductor)

the MDF to all station

analog

Units, Attendant Computer Consoles, ESLSs, SLIs,

single-line DTMF sets, and playback devices. (For exceptions, see the NOTE on page 3-6.)

Six-conductor modular jack assemblies for all sta-

tion instruments. (For exceptions, see the NOTE on page 3-6.)

A high-impedance digital multimeter to check the

power supply and ensure correct wiring of the modular jack assemblies. Multimeter accuracy must be

or better.

Standard terminal blocks

type) and bridg-

ing clips for constructing the MDF.

Page 78

INSTALLATION Issue 1, November 1994

256

INTER-TELPRACTICES

& MAINTENANCE

Industry-standard,

cable for comtecting the

terminal blocks to the circuit cards iu the

equipment cabinet. Industry-standard, cross-connect wire may be need-

ed for certain applications.

ommended non-conducting, plastic covers) and a

connecting machine.

Ferrite beads for all station, trunk, and RS-232-C cables. (Refer to SPECIFICATIONS, page 2-4.)

Gas discharge tubes with silicon avalanche suppres-

sors for lightning protection on the CO, DID, OPX,

Grounding terminal and 1OAWG wire for grounding the equipment cabinet.

Standard

telephone hand tools and the mounting hardware for the MDF backboard, trunk and station blocks, modular jack assemblies, etc.

PC for customizing the database

(refer to page 2-31 for specifications).

3.2 the type of

spans are

be installed: Depending on

terminationused by the telephone company (telco) and how close it is to the MDF, the following tools and supplies are also needed.

NOTE: The dard

span is typically connected to the stan-

modular jack provided on the

Card. However, in certain situations (e.g., when using an external CSU equipped with a DB15 connector), it may be

more convenient to use the card’s optional DB15 connector instead. Refer to page 3-20 for more information.

For Tl spans terminated on

jacks near the

Four-pair, non-reversing, mod-to-mod line cords

(one for each

For Tl spans terminated on

the MDF (see

span installed).

jacks away

3-9 on page 3-18):

For Tl spans terminated on an

on page 3-19):

block (see

Eight-conductor modular jack assemblies (one for

each

span installed).

Four-pair, non-reversing, mod-to-mod line cords

(one for each

-enough to extend from each telco termi-

cable

nation to the MDF (see page

span installed).

for cable specifi-

cations).

PLAN STATION LOCATIONS AND TYPES OF STATION INSTRUMENTS

NOTE: For information on the GX and GMX station instruments, refer to appendixes A and B in the back of this manual.

Prepare a cable identification plan using station

cir-

cuit numbers; do not use extension numbers (see

page 3-6 for details).

The IMX 256

System has the capacity for

up to 256 keysets if using the new digital keysets or

IMX AIM keysets, which can be installed two to a circuit. The GMX-256 System has the capacity for up to 128 keysets. Refer to SPECIFICAI’IONS, starting on page 2-21, for a listing of the available

mum station capacities. Excluding nondisplay only models, all standard keysets can be converted to display

by installing optional Liquid Crystal Display (LCD) Units (see REPLACEMENTPARTS for part number).

NOTE: The equipment cabinet has 16 slots for station and trunk cards. The

of stations and trunks available depena3 on the number and type of cam& station hsmmentts,

equipped with

Units: Up to 50

Units. Digital units are

and power supply

circuits can be

powered by their own AC transformers and do not require a DKSC circuit that is separate from the key- set’s circuit. Each analog unit requires one KSC or KSC-D circuit and its own cabling. As many as four analog units can be installed on a single XSC.

Eight-conductor modular jack assemblies (two for

each

span installed).

Four-pair, non-reversing, mod-to-mod line cords

(two for each

cable -enough to extend from each telco RJ48C

jack to the MDF (see page

span installed).

for cable specifica-

tions).

Page 3-4

Attendant Computer Consoles: If desired, up to

128 Attendant Computer Consoles can be installed

on the system. The consoles are connected to KSC or

KSC-D circuits.

NOTE: For additional information on the Attendant

Computer Console, along with detailed installation and programming instructions, refer to the manual included with the console.

Page 79

INTER-TELPRACTICES

INSTALLATION

Issue 1. November

Sets: Up to 240 single-line sets can be installed on the system. They can be Enhanced Single-Line Sets @SLSs), Single-Line Instruments

Playback devices can be used in

place of single-line stations. They are especially

as hunt group overflow/announcement stations and automated attendant stations. (Refer to page 2-30 for specifications.)

THE OPTIONAL EQUIPMENT

Headsets for keyset stations and handset amplifiers

for keyset stations or single-line set stations.

Digital keyset Personal Computer Data Port Mod-

ules (PCDPMs) for using Off-Hook Voice Announce (OHVA) features, and for installing a digital BLF Unit and/or an optional Modem Data PortMod- ule.

Digital keyset Modem Data Port Modules (MDPMs)

for connecting modem-equipped data devices or single-line sets.

Analog

Data Port Modules for hooking up either modem-equipped data terminals or loud ringing adapters and external signaling devices.

if necessary. (Refer to page 2-30 for specifications.) Up to two external music sources. External paging speakers and amplifier(s). (Refer to

the NOTE and CAUTION on page 2-6.)

General signaling devices.

Power failure transfer equipment (customer-pro-

vided PFI’relay card, card mounting case, and external power source).

Electronic equipment (alarms, lights, etc.) to

nect to the night transfer relay and/or the

con-

alarm

relays.

For on-site or stand-alone/remote system program-

ming, an IBM AT-compatible personal computer with a minimum: 6 megabytes (MB) available

memory on the hard disk drive,

double sided/high density

(1.2MB) or

floppy disk drive, 640k RAM (with minimum 512k available), MS-DOS 3.3 (or 5.0,6-O, or 6.2), and an EGA graphics monitor. A programming mouse is optional (if used, install on an unassigned COM port). For remote maintenance, a

more information.)

cables longer than

output device(s) must not have

feet

meters). (See page

2-31 for specifications.)

System battery back-up

power supply or standby power supply. (Refer to page 2-32 for specifications.)

Doorbox equipment. (Refer to page 2-32.) Voice mail equipment. (Refer to page 2-32.) Facsimile machine. (Refer page 2-32.) Talkback speakers and external control unit. (Refer

to page 2-32.)

Page 3-5

Page 80

Issue 1, November 1994

INSTALLATION

MAINTENANCE

CABLING

4.1 Floor plans should be developed to aid in proper station cabling in a star (home run) configuration from the equipment cabinet. The cables are run from the station locations to the station blocks at the MDF. Refer to page 2-4 for cabling requirements.

4.2 Both ends of each cable should be labeled with the station’s circuit number (hardware address). The circuit number

designates the card’s position in the equipment cabinet (X = 1-16) and the circuit positionon the card

= 1-16 for DKSCS, Y = l-8 for KSCs, KSC-

and IDES, Y = 1-16 for SLCs). For example, circuit number 4.6 identifies the sixth circuit on the card installed in slot number four.

NOTE: When IMX

dual-circuit

are installed two to a circuit, the circuit number is separated into two parts (A and B) in database programming (e.g., circuit

and 4.6B).

When the system is first powered up, the default configuration is used to assign extensionnumbers to the station circuits. On IMX 256 Systems, card slots l-4 are considered KSCs or RSC-Ds, slots 5-6 are DKSCs, slots

7-8 are unassigned, slots 9-12 are

and slots 13-16 are LGCs. On GMX-256 Systems, card slots l-8 are considered KSCs or KSC-Ds, slots 9-12 are SLCs, and slots 13-16 are LGCs. Changes to the default configuration can be made through database programming. Refer to PROGRAMMIN G, page 5-170, for more information.

4.4

The system assigns extension number 100 to sta-

tion circuit 1.1, extension number 101 to station circuit

1.2, and so on to match the initial configuration. Circuit

1.1 is equipped as the primary attendant’s keyset when the system is in the default configuration. Through database programming the circuits can be assigned differ-

ent extension numbers and/or be changed to four-digit

extension numbers. Refer to PROGRAMMING, page

5-58,

for more information.

NOTE: “B” circuit extension numbers

keysets do not have

assigned one in database pro-

NOTE: It is recommended that three-pair twisted cable and six-conductor modular jacks be used for all station connections. This allows the various types of station instruments to be easily interchanged, if necessary. However, digital

single-line sets, and playback devices can be installed using one- pair twisted cable and four-conductor modular jacks. (If three-pair cable is used for wiring digital single-line sets, and playback devices as recommended, extra terminal blocks and the use of crossconnect wiring techniques are required.)

4.6 From the MDF location, run industry standard, three-pair (six-conductor) twisted (24AWG, level-l or better) cable to keysets, analog DSS/BLF Units, Atten-

dant Computer Consoles, single-line sets, and playback devices. Follow these guidelines:

Install proper type cable for the application according to the National Electrical Code and local building

Avoid cable runs parallel to fluorescent light fixtures or AC lines not in conduit. If these obstacles are unavoidable, run the cables across them at right angles.

Do not run station cables inside electrical conduit already occupied by AC power cable. (To do so is a violation of the National Electrical Code.)

Do not run cables near equipment with electric motors or through strong magnetic fields, such as those generated by large copy machines, arc welding equipment, heavy motors, etc.

Do not place station cables where they can be stepped on or where they can be rolled over by office furniture.

Ifusingmulti-pair (e.g., 25-pair) ple station locations, do not include AC-ringing

single-line sets, AC-ringing auxiliary equipment, or

trunks in a cable being used for analog keysets, At-

tendant Computer Consoles, or analog Units. Stations using analog keyset circuits should be routed in separate multi-pair cable runs.

4.5

Each analog

Unit requires a KSC or

circuit and cabling that is separate from the key-

set’s circuit and cabling. If50 keyset circuits are used for

analog DSS/BLF Units, 50 fewer analog keysets and/or

Attendant Computer Consoles can be installed. Up to

four units can be installed on a single Reyset Card.

Page 3-6

Do not exceed the loop limit measurements (using

24AWG wire) for the station cable lengths as out-

lined in the table on page 3-29. The ohm values are

loop measurements; feet (meter) values are the max-

imum one-way measurements from the equipment

cabinet.

Page 81

4.7

256

Since the

256 System utilizes digital voice

MAINTENANCE

and data transmission between the digital keysets and the equipment cabinet, there are some additional digital keyset-only cabling requirements:

l Do not use shielded cable, and do not use cable

smaller than 24AWG.

tion.

l Unlike analog

the digital

do not

need to be routed in separate multi-pair cable runs.

For example, if using

cable runs to multiple station locations, it is acceptable to include single- line sets, auxiliary equipment, and trunks in a cable being used for digital keysets.

INSTALLATION

Issue 1, November 1994

THE CABLES AT

Digital

4.8

Terminate the digital keyset station cables on four-

or six-conductor modular jack assemblies at the station

4.9 Do not mount the assemblies on the wall at this time; they will be wall mounted later when the station instruments are installed. Refer to Figure 3-l below for a wiring diagram.

If the tip and ring is reversed when installing a digital keyset, the keyset will not function.

FIGURE 3-l.

RING

DIGITAL

FOR DIGITAL KEYSETS

USING FOUR-CONDUCTOR JACKS

MODULAR JACK ASSEMBLY WIRING

RING

TIP

FOR DIGITAL KEYSETS

USING SIX-CONDUCTOR JACKS

Page 3-7

Page 82

Issue 1, November 1994

Analog Station Instruments

4.10

Terminate the analog

analog Unit, Attendant Computer Console, single-line set, and playback device station cables on six-conductor modular jack assemblies at the station locations. (For exceptions to this, refer to the NOTE following section A on

the previous page.)

Do not mount the assemblies on the wall at this

time; they will be wall mounted later when the station

instruments are installed. Refer to Figure 3-2 below for a wiring diagram.

256 INSTALLATION & MAINTENANCE

If the power pair stalling a

INTER-TELlPRACTICES

CAUTION

is reversed, in-

Attendant Computer Console, or DSS/BLF Unit will open the fuse or associated thermistor on the

Card. If the card has a fuse, this affects operation of all station instruments connected to that card. If tip and ring (W/ BL,

is reversed for DC-ringing single-line

sets, the instrument may ring continuously.

FIGURE 3-2. ANALOG

MODULAR JACK ASSEMBLY WIRING

FOR ANALOG

ATTENDANT COMPUTER CONSOLES,

AND ANALOG

UNITS

WIG

FOR SINGLE-LINE SETS

AND

PLAYBACK DEVICES

NOTE: The

and

conductors for the types of stations are reversed. If the type of station

instrument is changed, the modular jack must be rewired.

Page 3-g

Page 83

INSTALLATION

ASSEMBLING THE MAIN

MAINTENANCE

DISTRIBUTION FRAME BACKBOARD

5.1 The main distribution frame (IUDF) is the point at which the station instruments, trunks, and auxiliary system equipment are connected to terminal blocks (or, in the case of lar jack assemblies are used instead). These terminal blocks (or modular jacks) are then connected to the 256 System. It is extremely important that the connections be made careffilly and accurately.

this manual outlines basic one block to one card installation using bridging clips. However, it is quite acceptable, and in some situations more additional blocks and then moss connect between them.

5.2 Assemble the MDF as follows:

(1) Mount at least a 4

tion. (Depending on the number of stations and trunks to necessary.)

(2)

Attach the plywood backboard. Refer to Figure 3-3 on the next page for a sample MDF block layout and cable assignments. Blocks include:

spans and optional

To simplify the MDF installation instructions,

g-inch plywood backboard at the MDF loca-

installed, a larger backboard may be

Up to 15 blocks for connecting CO trunks and the

cables for the Loop/Ground Start

equipment, modu-

to use

terminal blocks to the

INSTALLATION

Cards (LGCs) and/or the Loop Start Cards

Up to 15 blocks for connecting DID trunks

and the

Up to 16 blocks for connecting station cables and the Digital

analog keysets, analog DSWBLF Units, and

Attendant Computer Consoles; Single-Line

Cards

back devices; and Inward Dialing Cards

for off-premises extensions and/or on-premises single-line sets and playback devices.

If, as recommended, three-pair cable

is used for wiring single-line sets and play-

back devices, extra terminal blocks and the use of cross-connect wiring techniques are required.

One block for connecting the RCPU Card cable and cables for music sources, paging equipment relay control, power failure transfer equipment, night transfer equipment, general signaling devices, etc.

(3)

If any ing devices are to be installed, attach eight-conductor modular jack assemblies to the MDF as required. (For complete information on installing

spans or any optional

spans, refer to page 3-17.)

cables for the Inward Dialing

cables for the station cards

Cards

for single-line sets and play-

for digital

alarm signal-

Page 3-9

Page 84

Issue 1, November

256

MAINTENANCE

FIGURE 3-3. SAMPLE MDF BLOCK LAYOUT AND CABLE ASSIGNMENTS

TO CENTRAL

OFFICE

LGC OR LSC

CO TRUNKS

KSC

13.1

14.1

TO STATIONS

EMC

E&M TRUNKS

1-4

DID TRUNKS

KSC

3.1

3.8

KSC RCPU

7.1

7.8

6.1

11.1

14.16

TO EXTERNAL

EQUIPMENT

CABLES

TO 256

Page 3-10

Page 85

INTER-TELPRACTICES

256

CONNECTING THE TRUNK CABLES TO

MAINTENANCE

5.3

Connect the CO trunks and Loop/Ground Start

Card (LGC) and/or Loop Start Card

cables as outlined below. Note that step 2 mentions two installation methods. Although the first method is more flexible, the second method can be used to minimize the number of terminal blocks that are used. Refer also to Figures 3-5 and 3-6 on the following pages.

Cross connect the CO trunks from the telephone company RJ-type blocks to the righz side of the

blocks.

NOTE: For additional lightning protection, see paragraph 5.6 on the next page.

A: Using enough

from the

blocks to the cards, make the

cable to run

termination cables. Attach a %)-pin female am- phenol-type connector to one end of each

cable. Label each connector and cable end with the appropriate slot number (for example, SLOT-15). These

will be

attached to the cards after they are installed in the equipment cabinet.

B: Using enough

from the

blocks to the cards, make the

cable to run

special termination cables. Attach up to three

female amphenol-type connectors to one

end of each

3-6.

Connect CO trunks

cable as shown in Figure

to one connector, trunks 9-16 to another connector, trunks 17-24 to a third connector, and so on for each cable. Label each connector with the appropriate slot number (for example, SLOT-E). These connectors will be attached to the cards after they are installed in the equipment cabinet.

Using standard electrical tape, tape two ferrite split beads around each 25-pair cable just below the amphenol-type connector (as shown in Figure

3-4

on the next page).

Issue 1,

November 1994

NOTE: Ferrite beads must be installed to meet

Part 15 of FCC regulations. Refer to REPLACEMENT PARTS for the part number.

(4) Terminate the other end of each

cable on the left side of the corresponding block.

(5) Install

bridging clips to complete the connec-

DID

5.4

Connect the Direct Inward Dialing (DID) trunks

and Inward Dialing Card (RX!) cables as follows. Refer

3-7 on page 3-15 and Figure 3-19 on page

NOTE: Resides DID trunks, IDCs can also be used to install single-line sets, playback devices, and

premises stations. Any combination using the eight cir-

cuits on the card is possible. Refer to pages 3-21 to 3-28 for station installation instructions.

Cross connect the DID trunks from the telephone company RJ-type blocks to the right side of the

blocks.

NOTE: For additional lightning protection, see paragraph 5.6 on the next page.

Using enough 25-pair cable to run from the IDC blocks to the Inward Dialing Cards, make the termination cables. Attach a 50-pin female amphe- nol-type connector to one end of each IDC cable. Label each connector and cable end with the

These connectors will be attached to the Inward

Dialing Cards after the circuit cards are installed in the equipment cabinet.

Using standard electrical tape, tape two ferrite split beads around each 25-pair cable just below the amphenol-type connector (as shown in Figure 3-4 on the following page).

Terminate the other end of each the

side of the corresponding IDC block.

cable on

Install bridging clips to complete the connec-

Page 3-11

Page 86

Issue 1,

November

256

INSTALLATION

INTER-TELPRACTICES

MAINTENANCE

5.5 Connect E&M trunks and E&M Card cables as follows. Refer to Figure 3-g on page 3-16.

(1)

Cross phone company RJ-type blocks to the of the

the E&M trunks from the tele-

side

blocks.

NOTE: For additional lightning protection, see paragraph 5.6.

(2)

blocks-to the cables. Attach a

Cards, make the termination

female amphenol-type

connector to one end of each EMC cable. Label

each connector and cable end with the appropriate slot number (for example, SLQT-16). These

connectors will be attached to the -E&M Cards after the telecommunication cards ‘are installed in the equipment cabinet.

(3) Using standard electrical tape, tape two ferrite

split beads around each

cable just below the amphenol-type connector (as shown in Figure 3-4 below).

(4) Terminate the other end of each

the

side of the corresponding

(5)

Install bridging clips to complete the

Lightning

Protection

cable on

block.

5.6 For additional lightning protection, install gas discharge tubes with silicon avalanche suppressors to ground (grounding rod or copper, cold water pipe) on each CO, DID, E&M, and OPXtrunk. This must be done external to the system. Each gas discharge tube is installed directly between the telephone company RI-type block and the system’s CO/DID/E&M/OPX input. This protection should give energy absorption and filter low-

level surge potentials. (For installation instructions and specific recommendations, contact Customer Support.)

5.7 Also, in areas with frequent occurrences of lightning, it is recommended that the cable between the telephone company RJ-type blocks and the gas discharge tubes be at least 75 feet long (the cable may be coiled up

if desired).

FIGURE 3-4. EXAMPLE OF FERRITE BEAD INSTALLATION

AMPHENOL-TYPE

CONNECTORS

TO THE MDF

FERRITE

BEADS

Page 3-12

Page 87

256 INSTALLATION

Issue 1, November 1994

FIGURE 3-5. LGC/LSC BLOCK CABLE TERMJNATIONS (METHOD A)

LOOP/GROUND

START CARD OR

LOOP START

CARD

TIP-

121r-12----

RING

----

TYPE

CONNECTOR

BLOCK

(PART OF

Page 3-13

Page 88

Issue 1, November

FIGURE 3-6.

256

MAINTENANCE

FEMALE AMPHENOL-TYPE CONNECTORS

17-24

(PART OF MDF)

CABLE TO

MDF

Page 3-14

Page 89

INTER-TELPRACTICES

256 INSTALLATION &

FIGURE 3-7. IDC BLOCK CABLE TERMINATIONS

Issue 1, November

IDC

INWARD

DIALING

CARD

RING

1.2 1

RING

. 1.11

1.1

1.2

TELCO

1.8

1.1

TYPE

CONNECTOR

BLOCK

(PART OF MDF)

NOTE: The AC Enable terminations shown above are used only when installing single-lines sets and playback devices, not DID trunks. For information on their use, refer to the following pages.

Page 3-15

Page 90

Issue 1, November

256 INSTALLATION

INTER-TELPRACTICES

MAINTENANCE

FIGURE 3-8. EMC BLOCK CABLE TERMINATIONS

EMC

TELCO

E&M

CARD

TELCO

TYPE

CONNECTOR

NOTE: Depending on the area of the country and/or the specific type of E&M trunk ordered, one or more of the cable pairs shown above may not always be needed. For each E&M trunk to be installed, terminate all cable pairs provided by the telephone company, as shown in the

BLOCK

(PART OF MDF)

above.

Page 3-16

Page 91

INTER-TELPRACTICES

The installation procedure

spans at the tion used by the telephone company and how close it is to the MDF. The modular jacks or on RJ-type terminal blocks.

5.9 Follow one of the three (A, B, or C) outlined on the following pages.

NOTE: The dard RJ4gC jack provided on the certain situations (e.g., when using an external

equipped with a venient to use the card’s optional instead. Refer to page

Method A Jacks Near The MDF

256

CONNECTING Tl

is dependent on the type of termina-

spans may be terminated on RJ48C

span is typically connected to the stan-

connector), it may bc more con-

Tl Spans Terminated On RJ4SC

termination methods

Card. However, in

for more information.

MDF

to connect

connector

INSTALLATION

Issue 1, November 1994

Mount one eight-conductor modular jack assem-

bly next to each telephone company RJ48C jack. For each modular jack assembly mounted in step

1, also mount a corresponding modular jack assembly on the MDF backboard.

To connect the modular jack assemblies

(3)

mounted in steps 1 and 2: a. Run

modular jack assemblies.

NOTE: If the telephone company termination is more than 2000 feet from the MDF, special for cable specifications). For shorter distances, two lengths of standard two-pair voice-frequency cable (one cable for transmit

stead.

cable between the

cable

and one cable for receive) may be used in-

be used (see page

5.10

Install

the MDF as outlined in below.

Plug one end of a four-pair, non-reversing (straight through), mod-to-mod line cord into each telephone company RJ48C jack. The other end of each line cord will Zater be plugged into the

NOTE: Make sure the connectors on the ends of each line cord are properly attached. If any of the wires are cracked or broken, problems can occur.

Method B Jacks Away

to Figure 3-9 on the next page for a diagram of the complete layout.

spans terminated on RJ4gC jacks near

jack on the corresponding

Spans Terminated On RJSSC

The

spans terminated on RJ48C jacks away

Card.

transmission

At the telephone company termination, plug one end of a four-pair, non-reversing (straight through), mod-to-mod line cord into each RJ4gC

jack and plug the other end into the correspond-

ing modular jack assembly next to it.

At the MDF backboard, plug one end of a four- pair, non-reversing (straight through), mod-to- mod line cord into each modular jack assembly. The other end of each line cord will

plugged into the Card.

NOTE: Make sure the connectors on the ends of each line cord are wires are cracked or broken, problems can occur.

each end of the cable onto their respec- tivemodular jack assemblies. Refer to Figure 3-10 on the next page for a diagram of the wiring.

jack on the correspondingT1

attached. Ifauy of the

transmission

Page

Page 92

INSTALLATION

1, November 1994

FIGURE 3-9,

SPAN

256 INS’ICAUATON & MAINTENANCE

FROM

JACKS

FOUR-PAIR, NON-

REVERSING,

MOD-TO-MOD

LINE CORD

JACK

CABLE

EIGHT-CONDUCTOR

MODULAR JACK ASSEMBLIES

FOUR-PAIR, NON-

REVERSING,

MOD-TO-MOD

LINE CORD

FIGURE 3-10. MODULAR JACK ASSEMBLY WIRING FOR

SPANS

MODULAR JACK ASSEMBLY FOUR-PAIR, NON-

REVERSING,

MOD-TO-MOD

LINE CORD

‘2

34 --

RING

RING 1

NOTE: OUT = transmit to network, IN = receive from network

Page 3-18

Tl CARD

JACK

Page 93

256 INSTALLATION

MAINTENANCE

INSTALLATION

Issue 1, November 1994

Method C

5.12 Install the

Block

Spans Terminated On An

spans as outlined in the following steps. Refer to Figure 3-11 below for a diagram of the complete layout.

(1) On the MDF backboard, mount one eight-con-

ductor modular jack assembly for each

span termination on the telephone company RJ-type block(s).

(2) Connect

cable between the telephone compa-

ny terminations and the corresponding modular

jack assemblies as follows:

NOTE: If the telephone company termination is more than 2000 feet from the MDF, special cable must be used (see page 2-20 for cable specifications). For shorter distances, two lengths of standard two-pair voice-frequency cable (one

FIGURE

SPAN TERMINATIONS FROM R&TYPE BLOCKS

cable for transmit

and one

cable for receive) may

be used instead. a.

Terminate one end of a six-pair cable on each

modular jack assembly. Refer to Figure 3-10 on the previous page.

Terminate the other end of the six-pair cable on the

side of the

R&type terminal

block.

Plug one end of a four-pair, non-reversing (straight through), mod-to-mod line cord into each modular jack assembly (mounted in step 1). The other end of each line cord will

plugged into the

jack on the correspondingT1

Card. NOTE: Make sure the connectors on the ends of

each line cord are properly attached. If any of the wires are cracked or broken,

transmission

problems can occur.

TELCO

CABLE

FOUR-PAIR, NON-

REVERSING,

MOD-TO-MOD

LINE CORD

EIGHT-CONDUCTOR

MODULAR JACK ASSEMBLY

Page 3-19

Page 94

Issue 1, November

256

MAINTENANCE

Using The Optional The

Jack

the preceding pages show the to the RJ48C jack on the

Connector In Place Of

span being connected

Card. However, in certain situations (e.g., when using an external CSU equipped with a DB15 connector), the installer may wish to use the card’s optional

The pin functions of the

5.14

connector instead.

Card

connec-

tor (U-pin subminiature “D” female connector) are as

follows:

FIGURE 3-12.

MALE DB15 CONNECTOR

SPAN TOT1 CARD

CARD’S OPTIONAL

To connect the

5.15

a DB15 connector coming

connector on the

the

span, a flat,

Card to

twisted-pair ribbon cable with a maximum capacitance of 16pF/ft. may be used for distances of up to 50 feet, as shown in the figure below. For distances longer than 50 feet, use the special high-speed data

cable described in paragraph 3.91 on page

CONNECTOR

MALE DB15 CONNECTOR

Ring (Out) 9

lip 1 (In) 3

Ring 1 (In) 11

-15

NOTE: OUT = transmit to network, IN = receive from network

9 Ring (Out) 2 10

1 (in) 11 Ring 1 (in) 4

12 5 13

14 7

Page 3-20

Page 95

256

MAINTENANCE

Issue 1, November 1994

CABLES TO THE

MDF

5.16

Each type of station instrument is comtected to a

specific station card. Digital keysets are connected to

Attendant Computer Consoles are comtected to KSCs or

Analog

analog

Units, and

KSC-Ds. Single-line sets and playback devices are connected to SLCs and/or IDCs.

Resides single-line sets, playback devices, and off-premises extensions, IDCa can also be used to install DID trunks. Any combination using the eight circuits on the card is Possible. Refer to pages 3-11 to 3-15 for DID

trunk installation instructions.

5.17 After the

station cables are run, connect them and the 25-pair cables to the station blocks on the MDF as follows:

Ensure that both ends of each station cable are labeled with the circuit number of the associated station instrument.

Terminate each station cable on the

side of the corresponding station block. Refer to Figures 3-13 through 3-19 on the following pages for station cable terminations.

NOTE: For simplicity, Figures

and 3-18 show digital keysets, single-line sets, and playback devices being installed using one-pair cable and four-conductor modular jacks. Of course, if three-pair cable and six-conductor modular jacks are used instead (as is

mended), extra terminal blocks and the use of cross-connect wiring techniques are required.

Using enough

cable to run from each block to each station card in the equipment cabinet, make the termination cables. Attach a

end of each cable. Label each

and cable end with the appropriate slot number (for example, SLOT-2). These

will be at-

tached to the station cards after the circuit cards

are installed.

Using standard electrical tape, tape two ferrite

split beads around each 25-pair cable just below the amphenol-type connector (as shown in Figure 3-12).

Ferrite beads must be installed to meet Part 15 of FCC regulations. Refer to REPLACEMENT

for the part number.

Terminate the other end of each 25-pair cable on the

side of the corresponding station block.

NOTE:

an IDC can be enabled for

necessary, any of the eight circuits on

AC ringing to be used

with off-premises extensions or on-premises

AC-ringing equipment. To do this, each circuit

can be strapped directly at the IDC terminal block (as shown in Figure 3-18 on page 3-27) or on the card itself (as described on page 3-51).

DO NOT

attach bridging clips until the loop resistance tests have been performed (as described on page 3-29).

Page 3-21

Page 96

Issue 1, November 1994

INTER-TELPRACTICES

&MAINTENANCE

FIGURE 3-13.

KSC BLOCK CABLE TERMINATIONS FOR

DKSC

RING

1 l-1.1.1

, . .

MODULAR

JACK

ASSEMBLY

TO DIGITAL

DIGITAL

CARD

TYPE

CONNECTOR

NOTE: For simplicity, this figure shows keysets being installed using one-pair cable and four-conductor modular jacks. Of course, if two-pair cable or three-pair cable is used instead, extra terminal blocks and the use of cross-connect wiring techniques are required. Note that tip and ring are terminals (black and yellow) on the modular jack.

BLOCK

(PART OF

connected

to the

Page 3-22

Page 97

IMX’GMX

Issue 1, November 1994

FIGURE 3-14. ANALOG KSC BLOCK CABLE TERMINATIONS

KSC

MODULAR

CARD

TYPE

CONNECTOR

BLOCK

(PART OF

MODULAR

JACK

ASSEMBLY

TO KEYSET,

ATTENDANT CONSOLE,

OR DSSBLF

Page 3-23

Page 98

IN-TION Issue 1, November

FIGURE 3-15. INSTALLING S-LINE IMX AIM

MDF

TWO TO A CIRCUIT

CIRCUIT 1 .lA

CIRCUIT 1.1A

MDF

BLOCK

CIRCUIT

KSC-D

CIRCUIT

NOTE: This illustration shows three common methods for installing two 8-line IMX

KSC-D circuit. For a detailed wiring diagram of method A, refer to the following-page.

Page 3-24

keysets on a single

Page 99

INSTALLATION

MAINTENANCE

Issue 1, November 1994

FIGURE 3-16. KSC-D BLOCK CABLE TERMINATIONS FOR &LINE IMX AIM

INSTALLED TWO TO A CIRCUIT

MODULAR

CIRCUIT 1

KSGD

MODULAR

JACK

BLOCK

(PART OF

SEC

NOTE: This illustration details one common method for wiring two Mine IMX

KSC-D circuit. For a simple illustration of some alternative installation methods, refer to the previous page.

keysets to a single

CIRCUIT 1

I I

TO S-LINE AIM KEYSET

Page 3-25

Page 100

INSTALLATION

Issue 1, November

256

INTER-TELPRACTICES

MAINTENANCE

SINGLE-

LINE

CARD

FIGURE 3-17.

SLC BLOCK CABLE TERMINATIONS

MODULAR

JACK

ASSEMBLY

TO SINGLELINE SET OR PLAYBACK DEVICE

MODULAR

JACK

TO SINGLE-

LINE SET OR DEVICE

TYPE

CONNECTOR

BLOCK

(PART OF MDF)

NOTE: For simplicity, this figure shows single-line sets and playback devices being installed using one-pair cable and four-conductor modular jacks. Of course, if three-pair cable and six-conductor modular jacks are used instead (as is recommended), extra terminal blocks and the use of cross-connect wiring techniques are required.

Page 3-26

Inter-Tel IMX 256, GMX 256 User Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

TABLE OF CONTENTS

OVERVIEW

SPECIFICATIONS

INSTALLATION