Inter-Tel Imx/Gmx 256 Installation And Field Maintenance Manual

							lNTEx-TELPRAcTIcEsLIST OFFIGURJSIM.X/GMX 256INS‘E4LLATION & MAINTENANCEIssue 1, November 1994
LIST OF FIG-URIZS
iWMBER
SPECIFICATIONSFigure 2-l.
Figure 2-2.
Figure 2-3.
Figure 2-4.
Figure 
2-5,
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.
TlTLE
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 Keyset........................................
IMX 24-Line AIM Keyset....................................
IMX 
1ZLine Keyset........................................
IMX 
12-Line AIM Keyset....................................
IMX 8-Line Keyset.........................................
IMX 8-Line AIM Keyset.....................................
Inter-Tel/DVK 24-Line Keyset................................
Inter-Tel/DVK 1ZLine Keyset................................
Inter-Tel/DVK 8-Line Keyset.................................
Digital Direct Station Selection/Busy Lamp Field (DSS/BLF) Unit...
IMXDSS/BLFUnit........................................
Inter-Tel/DVK DSS/BLF Unit.................................
Enhanced Single-Line Set (ESLS).............................
Single-Line Instrument (SLI).................................
INSTALLATION
Figure 3-l.
Figure 3-2.
Figure 3-3.
Figure 3-4.
Figure 3-5.
Figure 3-6.
Figure 3-7.
Figure 3-8.
Figure 3-9.
Figure 3-10.
Figure 3-11.
Figure 3-12.
Figure 3-13.
Figure 3-14.Digital 
Keyset Modular Jack Assembly Wiring...................
Analog Station Modular Jack Assembly Wiring...................
Sample MDF Block Layout And Cable Assignments...............
Example Of Ferrite Bead Installation...........................
LGC/LSC Block Cable Terminations (Method A).................
LGC/LSC Block Cable Terminations (Method B).................
IDC Block Cable Terminations................................
EMC Block Cable Terminations...............................
Tl Span Terminations From RJ48C Jacks.......................
Modular Jack Assembly Wiring For Tl Spans....................
Tl Span Terminations From RJ-Type Blocks.....................
Using The Tl Card’s Optional DB15 Connector..................
Digital KSC Block Cable Terminations For Keysets...............
Analog KSC Block Cable Terminations.........................
Page xiii
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							LIST OFFIGURESINTER-TELPRACTICES
Issue 1, November 1994lMX/GMX 256 INS-TION & MAINTENANCE
h”UMBER
Figure3-15.
Figure3-16.
Figure3-17.
Figure3-18.
Figure3-19.
Figure3-20.
Figure3-21.
Figure3-22.
Figure3-23.
Figure3-24.
Figure3-25.
Figure3-26.
Figure3-27.
Figure3-28.
Figure3-29.
mFigure3-30.
Figure3-31.
Figure3-32.
Figure3-33.
Figure3-34.
Figure3-35.
Figure3-36.
Figure3-37.I
Figure Figure Figure Figure Figure3-38. 3-39. 3-40. 3-41. 3-42.
Figure3-43.
Figure3-44.
Figure3-45.
Figure3-46.
Figure3-47.
Figure3-48.
Figure3-49.
Figure3-50.
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 Tl Alarm Relays......
Connecting Two Tl Cards Together.............................
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)..................................
Keyset Card (KSC Or KSC-D)................................
Single-Line Card (SLC).....................................
Inward Dialing Card (IDC)...................................
Loop/Ground Start Card (LGC)...............................
Loop Start Card (LX)......................................
E&M Card (EMC)..........................................
TlC Card (TlC)...........................................
Standard Digital Keyset LCD Installation........................
Digital Keyset Self-Test Key Matrix............................
Digital PC Data Port Module (PCDPM) Installation...............
Sample Digital PCDPM Cable Connections......................
Digital Modem Data Port Module (MDPM) Installation............
IMX 24/12-Line Keyset LCD Installation.......................
Bottom Of 8-Line Dual-Circuit IMX AIM Keyset.................
IMX Keyset Data Port Module Installation......................
IMX Keyset LRA Set-Up....................................
Inter-Tel/DVK 24Line Keyset “Large” LCD Installation...........
Inter-Tel/DVK 12/8-Line Keyset “Small” LCD Installation.........
Inter-Tel/DVK Data Port Module Installation.....................
Inter-Tel/DVK LRA Set-Up..................................
Page xiv
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3-503-52 
,‘,
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.\>
3-89-2 
						

							LIST OFFIGURES
Issue 1. November 1994
NUMBERTITLEPAGE
Figure 3-51.Back Of Digital DSS/BLF Unit...............................
Figure 3-52.Inter-Tel/DVK DSS/BLF Unit Control Board....................
Figure 3-53.
SLI Control Board..........................................
Figure 3-54.Bottom Of ESLS...........................................
FEATURESFigure 4-l.
Tl Span Applications........
...............................
Figure 4-2.-
SMDA Account Code Report Format...........................
Figure 4-3.
SMDA Summary Report Format..........
....................
Figure 4-4.
SMDA Detailed Report Format...............................
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.
Figure 5-25.
Tl 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 
(INDT).....................................
Trunk Groups, Did Groups & Ring-IdAnswer Patterns (TRNK).....3-91 
m
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
5-2135-216 
1
5-217
5-223
5-224Page xv 
						

							LEST OFFIGURES
Issue 1, November 1994lNTER-TELPRACTIcEslMX/GMX 256 INSTALL.A~ON & MAINTENANCE
NUMBERTITLEPAGE
Figure 5-26.Tl Programming (Tl).......................................5-227
Figure S-27.Attendants- Alias Programming (ALSS).......................5-228
Figure 5-28.Attendants- DSWBLF Units (DSS)...........................5-229
Figure 5-29.Call Cost (COST)..........................................5-230
Figure S-30.SMDA (SMDA)...........................................5-231
Figure 5-31.SMDR (SMDR)............................................5-232
Figure S-32.Error Reports (ERR)........................................5-233
Figure 5-33.Passwords (PASS)..........................................5-233
Figure 5-34.Serial Port Configuration (PORT)..............................5-234
Figure 5-35.System Configuration (CONF)................................5-235
TROUBLESHOOTING
Figure 6-1.Light-Emitting Diode (LED) Indications........................6-3
Figure 6-2.
System Troubleshooting Chart................................
6-14
Figure 6-3.CO Trunk Troubleshooting Chart..............................
6-18
Figure 6-4.Feature Troubleshooting Chart................................6-24
Figure 6-5.Keyset Troubleshooting Chart.................................6-30
Figure 6-6.Single-Line Set Troubleshooting Chart..........................6-36
Figure 6-7.
DSS/BLF Unit Troubleshooting Chart..........................6-39
REPLACEMENTPARTSFigure 7-l.
Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . .7-l
Figure 7-2.Recommended Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5
APPENDIX AFigure A-l.
GX 24-Line Keyset.........................................A-3
Figure A-2.
GX Keyset Bottom.........................................A-5
Figure A-3.
GX DSS/BLF Unit Bottom...................................
A-9
Figure A-4.Key Assignments (KEY).....................................A-11
APPENDIX BFigure B-l.
GMX 24-Line Keyset.......................................B-3
Figure B-2.GMX 1ZLine Keyset.......................................B-4
Figure B-3.GMX 24-Line Keyset Data Port Module Installation...............B-7
Figure B-4.GMX DSS/BLF Unit Bottom.................................B-9
Figure B-5.Key Assignments (KEY).....................................B-11Page xvi 
						

							lNTER-TEJaPRAcTIcESIMX/GMX 256 lNSTAlLLATlON & MAINTENANCEFCC REGULATIONSIssue 1, November 1994
FCC REGIJIAI’IONS
IMPORTANT:
1.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 regis-tration number and ringer equivalence number
(BEN) for this equipment. Customers connecting
this equipment to the telephone network shall, be-
fore 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: BE2USA40751-MF-E (for MF-rated systems) or 
BE2USA-
61845KF-E (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
-Binger equivalence number (BEN) or service or-
der code 
(WC), as applicable, by position (see
chart on next page)
NOTE: The 
FEN is used to determine the quan-
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 compa-
ny to determine the maximum 
BEN for the call-
ing area.
- Facility interface code (FIG) by position (see
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 connec-
tion to the telephone network.
2.This equipment cannot be used on public coin ser-
vice provided by the telephone company. 
Connec-
3.
4.
5.
6.tion to party line service is subject to state 
tarif%.
(Contact the state public utility commission, public
service commission, or corporation commission for
information.)
If this equipment causes harm to the telephone net-
work, the telephone company will notify the cus-
tomer 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-
sary.
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 anynecessary modifications can be made in order to
maintain uninterrupted service.
If trouble is experienced with this equipment, con-
tact 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 ser-
vice 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 re-
paired by an authorized factory service representa-tive. 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 tele-
phone company will be made at their expense.Allowing this equipment to be operated in such a
manner as to not provide proper answer supervision
signaling is in violation of Part 68 of FCC rules. This
equipment returns answer supervision signals to thepublic 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. Thisequipment also returns answer supervision on all
DID calls forwarded back to the public telephone
network. Permissible exceptions are: a call is unan-
swered, busy tone is received, and reorder tone is re-
ceived.
Page xvii 
						

							FCC REGULATIONS
Issue 1, November 1994IIUTER-TELPRACTICESIM.X/GMX 256 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 Tl facilities to provide DID service, do not use the DID facility interface code (FIG) as listed above;
instead, provide the telephone company with DID answer supervision code 
“AS.2” and the FIC for the requested
Tl service.
c** Also interfaces with Class A and B.
7.This equipment does not currently comply with theamended Part 64 of FCC rules (CC Docket No.
91-35), which requires that equipment sold and
installed in the “call aggregator”market (i.e., hotels,
motels, hospitals, universities, etc.) must allow usersequal access to the long distance carriers of their
choice (i.e., must allow the 
10xXx dialing se-
quences 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 
lNSTRUMENTS SPE-
CIFICALLY DESIGNED FOR THIS SYSTEM HAVE
HEARlNG-AID COMP-LE HANDSEXS THAI-
ARE 
lN COMPLIANCE WlTH SECTION 68.316 OFTHE 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 televi-
sion 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 resi-
dential 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 doescause 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 inter-
ference by one or more of the following measures:
- Reorient the receiving antenna
- Relocate the equipment cabinet with respect to thereceiver
- 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 ex-perienced radio/television technician for additional
suggestions. The user may find the following booklet
prepared by the FCC helpful: “How to Identify and Re-
solve Radio-TV Interference Problems”This booklet is available 
from the U.S. Government
Printing Office, Washington, D.C. 20402, Stock No.-398-5.
If 
RFI problems persist, contact Inter-Tel Customer
support.Page xviii 
						

							INTER-TELPRACTICESIMX/GMX 256 INSTAUATION & MAINTENANCESAF+ETYREGULATIONS
Issue 1, November 1994
.SAF’ETY REG-ONSThe Inter-Tel 
Ih4X and GMX 256 Systems are
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 andSafety Administration 
(OSHA) as a Nationally
Recognized Testing Laboratory 
(NRI’L). Befonz
installation, also check the local eldrical codes
for 
importalrt information concerning the irzstalla-
tion of telephone and electronic 
quipment.
The following safety information is reprinted from UL
1459.
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 thefollowing:
1. Read and understand all instructions.
2.Follow all warnings and instructions marked on the
product.3. Unplug this product 
from the wall outlet before
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).
5.Do not place this product on an unstable cart, stand,
or table. The product may fall, causing serious dam-
age 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 build-
ing, consult your dealer or local power company.
8.This product is equipped with a three-wire ground-
ing 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-cian to replace your obsolete outlet. Do not defeat
the safety purpose of the grounding type plug.
9.Do not allow anything to rest on the power cord. Donot 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 
AC
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 
qualified
serviceman when some service or repair work is re-
quired. Opening or removing covers may expose
you to dangerous voltages or other risks. Incorrect
reassembly can cause electric shock when the prod-
uct is subsequently used.
13. Unplug this product from the wall outlet and refer
servicing to qualified service personnel under the
following conditions:A.
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 willoften 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.
F.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
INSTRUCTIONSPage xix 
						

							E~mber1994INTER-TELPRACTICESJMXIGMX 256 INSTALLATION & MAJNTENANCE
-LIMITlSD W-Y‘-3
For a period of one (1) year from the date of shipment to
Buyer, 
INTER--TEL warrants the Equipment (except forfuses and lamps) to be free 
from defects in material,
workmanship, or both, and to comply with specifica-
tions for the Equipment, as set forth in the 
Zn&&tion
and Field Main&nunce Manual. Buyer’s sole and ex-clusive remedy for breach of this Limited Warranty
shall be to have the defective Equipment (or parts) re-paired or replaced at INTER-TEL% option. Shipping
costs incurred returning warranty work to INTER-TEL
shall be paid for by the Buyer. 
This Limited Warranty
extendsonly to the Buyer, notto any customer, user, or
thirdprvty. This Limited Warranty does not apply to
Equipment (or parts) damaged by improper handling,
normal wear and tear, accidents, lightning damage, neg-
ligence, or improper use or maintenance, and does notapply to Equipment altered without authorization by
INTER-TEL. This Limited Warranty does not extend toany claims, suits, damages, liabilities, costs, and ex-
penses 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.
THIS W-IS ZN LlEU OF AND EXCLUDES
ALL OTHER
W-S,EXPRESS OR ZiUPKlED,
ZhK’LUDZNG, BVTNOTLhUZlED To, THEZiUPXLED
W- OFiU??RCi!MNlABm OR FIluESSFOR A 
PARTICULAR PURPOSE. THEM AZ&5 NO
W-ZES WZiZZCHEXTENDBEYOND TZf&SLZM-
ZTEDW-ZNNOEiXNTSZULLINTER-TEL
BE L.MZ3LE FOR LOSS OF Ah’TZCZR~D PROFZl3,
ZhVZDENlXL OR CONSEQUENTIAL DAM!XGES,
LOSS OF 
TZiUE OR OTHER LOSSES ZNCUZMED BYBUYER 
ZN CONNECl7ON Wi’TH THE PURPOSE,
POSSESSION, 
OPERAIION, OR USE OF THE
EQlIJLPm SUCH CLAZiUS BEZNG EXPRESSLY
WmD BY THE ZhKfXUVG COMB3For complete information on returning equip
merit, refer to the current Inter-Tel Material Re-
turn Policy (document part number 835.1065).
This document includes specific information on
the following subjects: warranty, procedures tofollow when returning equipment, equipment
damaged in shipment, insurance, repair policy,
and advance replacement policy.
Page xx 
						

							INTER-TELPRACTICESlMX/GMX 256 INSTAWLATION & MAINTENANCE
OVERVIEWIssue 1, November 1994
OVEIRVIEW
CONTENTSPAGE1. Introduction..........................................................l-l
2. System Capacities.....................................................l-l
3. Software Packages
....................................................l-2
4. Hardware Summary...................................................l-3
5.Installation, Programming, And Maintenance Summary....................l-3
6. Features Summary....................................................l-4
. System Features...................................................l-4
B. 
Keyset Features...................................................l-5
C.Enhanced Single-Line Set (ESLS) Features............................l-6
D. Single-Line Instrument 
(SLI) Features................................l-6
E.Direct Station Selection/Busy Lamp Field (DSS/BLF) Unit Features.......l-7
.
Attendant Computer Console Features................................l-7
G. Attendant Features................................................l-7
H. Maximum Capacities..............................................l-8
1. INTRODUCTION2. SYSTEM CAPACITIES
1.1The 256 System is a state-of-the-art, digital, voi-
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 flexi-
bility of private branch exchange 
(PBX) systems.
1.2The 
256 System is designed to meet the needs of
growing businesses. 
In fact, the system’s unique struc-
ture (including digital signal processing) allows it to be
easily adapted and expanded as business communica-
tion needs change. The modular design makes the sys-
tem easy to install and service. And, the programmable
features provide an abundance of user-friendly applica-
tions 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.2.1The equipment cabinet has 16 slots for station and
trunk cards. The actual number of stations and trunk
available depenak on the nwnber and type of cards, sta-
tion 
in&uznts, andpower supply motihles installed
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 (re-
quired), four are 
Tl Cards (the maximum allowed), and
the other 11 are Loop/Ground Start Cards, the system
maximum is 16 stations (using digital 
keysets or using
g-line IMX AIM keysets, which can be installed two to a
circuit) and 184 trunks. Of course, in most circum-
stances, the maximums listed below will never be
reached due to the variety of cards and station instru-
ments installed.23
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 Tl Cards and/or
digital or 
8-line IMX AIM keysets], the system
limits the number to 256. See page 2-6 for more
information.)
I
IPage l-l 
						

							OVERVIEW
INTER-TELPRACTICES
Issue 1, November 1994IMWGMX 256 INSTALLATION & MAINTENANCE
- 216-220 Non-Blocking Voice Channels (The
exact number of voice channels available de-
pends on the 
number of DTMF decoders
installed in the system. The voice channels areavailable 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) Trunks (Loop start
and/or ground start trunks installed in increments
of up to eight or 24, depending on the number ofLoop/Ground Start Cards 
[LGCS], Loop Start
Cards [LsCs], and/or Tl Cards FlCs] installedin the equipment cabinet. 
LGCs and LSCs can
have up to eight CO trunks installed, while TlCs
can have up to 24 CO trunk circuits installed.)
NOTE: The system is limited to a maximum of
four 
Tl Cards. (Pour cards with up to 24 circuits
per card equals 96 possible 
Tl trunk circuits.)
- 184 Direct Inward Dialing (DID) l’kunks
(Direct station access trunks installed in incre-
ments of up to eight or 24, depending on the num-ber of Inward Dialing Cards 
[n>cs] and/or TlCards installed in the equipment cabinet. 
IDCs
can have up to eight DID trunks installed, while
TlCs can have up to 24 DID trunk circuits
installed.)
- 140 E&M ‘Ihmks (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&MCards 
WCs] and/or Tl Cards installed in the
equipment cabinet. 
EMCs can have up to four
E&M trunks installed, while TlCs can have up to
24 E&M trunk circuits installed.)
- 256 Stations (Combinations of keysets, DSS/
BLF Units, Attendant Computer Consoles, andI
single-line sets in increments of up to eight or 16,depending on the number of Digital 
KeysetCards 
[DKSCs], Keyset Cards PCs or KSC-
Ds], Single-Line Cards [SLCs], and/or Inward
Dialing Cards @DCs] installed in the equipment
cabinet. 
XSCs can have from eight to 16 stationsconnected depending on the type of 
keysets
used, 
SLCs can have up to 16 stations connected,
and 
IDCs can have up to eight.)INOTE: At least one DKSC, 
KSC, or KSC-D
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 re-
calls, receive system alarm messages, etc.
- SO Keyset Circuits Equipped With Direct Sta-tion Selection/Busy Lamp Field 
@SS/BLF)
Units (Digital DSWBLF Units are physically at-
tached to and programmed to be used with spe-cific digital 
keysets. 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 
keys&, 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 
DSS/BLF Units may be connected
to a single 
Keyset 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
3.1The IMX 256 System is available in five software
“packages” (refer to REPLACEMENT
PATnrs for the
part numbers). The customer can choose between one
KP-rated system and four MP-rated systems. The KP-
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-ratedsystems permit one-key access to multiple outgoing
trunks. The five software packages are listed below.
l MF-rated, Basic package:
- This software package has all of the features
described in this manual except Toll Security,
Intercom/Outside Directory, Automated At-
tendant, Station Message Detail Accounting
(SMDA), Tl, and E&M.l
MErated, Extended package:
- This software package has all of the features
described in this manual except Tl and E&&M.l
MF-rated, Etiendedplus Tl and E&M package:
- This software package has all of the features
described in this manual.l
Xl?-rated, Ext&plus Tl and E&M package:
- This software package has all of the features
described in this manual except Least-Cost
Routing @CR).
3.2The 
IMX 256 system has an additional softwarepackage that has all of the features described in this
manual, plus it allows the GX station instruments to beinstalled on the system. (Refer to Appendix A in the
back of the manual for complete information.)Page l-2