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

							INTER-TEL4PRAcTICEsIMX/GMX 256 INSJALLA~ON & MAINTENANCEINSTALCATLONIssue 1, November 1994
FIGURE 3-18.IDC BLOCK CABLE TERMINATIONS
IDC
MODULAR
np--WBL TIPJACK..,--- 1.1 yRING -1ASSEMBLY--
nP -1.21 l-1.2----
RING-TO OFF PREM-ISES STATION,
SINGLE-LINE
sm. OR 
PlAY-
INWARD
DIALING
CARD
nP1.81- -RING--
wooIR+
NOTUSED
FIBR---m--
sR!RI
bF%
lus--
.S/RA-BKlgLAcEN4sLEBIAK.1.11,-1.1
-
WBLTIP
MODULARJACK
ISES STATION,
SINGLE-LINE
SET, OR PlAY-BACK DEVICE
\ANY OF THE EIGHT IDC 
ClRCUlTS CAN BE
STRAPPED FOR AC-RINGING ElTHER HERE ON
/THE BLOCK OR ON THE CARD lTSELF, IF
STRAPPED HERE. REMCIVE THE ASSOCIATEDSTRAP(S) ON THEf CARD BEFORE INSTALLING.
AMPHENOL-
TYPE
CONNECTOR
66Ml-SO-TYPE
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 3-27 
						

							IN-TIONINTER-TELPRACTICES
Issue 1, November 1994IMX/GMX 256 INSTALLATlON & MAINTENANCE
FIGURE 3-19.STATION CABLE TERMINATIONS ON TIjIE STATION BLOCK--.-.\..\1
-2
26W - BLCKTllIPCKr1+3oVDCCKTlTlPCKTlTlP1BL- wCKl-1RINGCKl-1GNDCKTlRlNGCKTlRING
27w-o
CKT2TxPCKTlPRIMARYPArHCKTzTlPCKT2TIP
20 
- wCKT2RINGCKTlPRmARYPAmCRTZRINGcRT2RR’JG
28W-G
CIcr3TlPCKT 1 SBCONDARY PATBCKT3TIPCKT3TIP
3G - WcKT3RINGclcr 1 SBCONDARY PATHcRT3RINGCKT3RING
29W 
- BRCKT4TIPCKT2+3oVDCCKT4TlPCKr4TIP
4BR- w
CKT4RINGCKT2GNDCKT4RINGcIcT4RlNG
30w - scKT5TlPCKr2PRRdARYPAnicKT5TlPCKTSTIP
5s-w
CKTSRINGCKT2PRJhfARYPATHCKTSRINGCKTSRING
31R 
- BLCKT6TIPCKT 2 SECONDARY PATHCKT6TIPCKT6TIP
6BL- R
CKT6RINGcm 2 SECONDARY Pa-HCKr6RlNGCKT6RING
32R
- 0CKT7mCKT3+3oVDCCIcr7mCKT7TIP
70
- RCKT7RINGCKI’3GNDCKT7RINGCKT7RING
33R: GCKT8TIPCKT3PRJ.MARYPATHCKT8TR’CKTBTIP
8
G
- RCKT8RINGCKr3PRMARYPmHCKr8RINGCKT8RING
34R- BRclcr9TlPcKT3 SECONDARY PATIicKr9TrPNOT USED
9BR- R
CKT9RlNGcKr3 SECONDARY PATHCKT9RINGNOT USED
35
10
36
1137
12R 
- S
S - R
BK 
- BL
BL 
- BK
BK 
- 0
0- BK
BK- G
G 
- BK
BK - BR
BR 
- BK
BK 
- S
S- BK
Y
- BL
BL 
- Y
Y
- 0
0
- Y
Y 
- G
G- Y
Y- BR
BR 
- Y
Y - s
S- Y
V
- BL
BL 
- V
CKrlOTIpCKT4+3oVDCCKrlOTlPNOTUSEDCKT 1ORJNGCKT4GNDCKl. lORINGNOT USBDCKTllTIPCKT4PRrMARYPATBCKTllTlPCKTIACBNABLB
CICT 11 RINGCKT4PRIMARYPAIHCKTllRINGCKTlACENABLB
CKT12TIPCKT 4 SECONDARY PATBCKT12TIPCKl’2ACENABLECKT 12RINGCKT 4 SECONDARY PATHCKT 12 RINGCKT 2 AC ENABLE38
13
39
14
40
15
cIcr13TIPCKT5+3OVDCcKT13TIPCKT3ACBNABLE
CKl’13RINGCKrsGNDCKT13RINGCKT3ACBNAB=
CKT14TlPCKT5PRIMARYPhsrHCKT14TIPcRT4ACBNABLE
CKT14RINGCKT5PRlMARYPATHCRT 14RINGCKT4ACENABLECKTlSTIPCKTS SECONDARY PATHcRT15TIPCKTSACENABLECKTlSRINGCKTS SECONDARY PATHCKTlSRINGCKT5ACENABLE
41
16
42
17
43
18
CKT16Tl.PCKT6 t3OVDCCKl’16TJPCKr6ACBNAB~CKT16RINGcKT6GNDCKT 16 RINGCKT6ACENABLE
NOT USED
CKT6PRMARYPATH
NOT USEDCKT7ACENABLE
NOT USEDCKT 6 PRIMARY 
PATH
NOT USEDCKT7ACENABLB
NOT USEDCKT 6 SECONDARY PATH
GROUNDCKT8ACBNABrx
NOT USEDCKT 6 SECONDARY PATH
GROUNDCKT8ACENABLE
44
19
45
20
46
21
47
22
48
23
49
24
50
25NOT USED
CKT7t3oVDCGROUNDGROUND
NOT USED
CKT7GND
GROUNDGROUND
NOT USED
CKT7PRMARYPATHGROUNDGROUND
NOT USED
CKr7PRMARYPATHGROUNDGROUND
NOT 
USBDcm 7 SECONDARY PATHGROUNDGROUND
NOT USBD
CKT 7 SECONDARY PATHGROUNDGROUNDV
- 0NOT USBD0 
- vNOT USEDV
- GNOT USEDG 
- VNOT USEDV
- BRNOT USEDBR 
- VNOT USEDV
- sNOT USBDs 
- vNOT USEDCKT 8 
t3OVDCCKT8GND
CRT8PRJhiARYPATH
CKT8PRJhMRYPAIH
CKT 8 SECONDARY 
PATTI
CICF 8 SECONDARY PATH
NOT 
USED
NOT 
USEDGROUND
GROUND
GROUND
GROUND
GROUND
GROUND
-48V-48V
GROUND
GROUND
GROUND
GROUND-48
GROUNTI
-48V
GROUND
DC or KSGP
Page 3-28
.‘,:>.,’ 
						

							IrJTER-TELPRACTICESINSTALLATION
IM.X/GMX 256 INSTALLATION & MAINTENANCEIssue 1, November 1994
D.STATION LOOP RESISTANCE TEST
5.18Perform the loop resistance test for each station
cable individually.
(1)
(2)
(3)Ensure that bridging clips have not been
installed on the station blocks and that the station
instrument is not connected to the modular jack
assembly.
Place a short across the RED and GREEN wires
on the modular jack assembly.
At the 
-&DF, measure the resistance across the
WHlTE/BLUE and BLUE/WHITE wires on the
right (station) side of the station block. The read-
(4)
(5)
(6)ing should not exceed the limits (for 24AWG
wire) listed in the chart below (ohm values are
the loop measurements; feet/meter values are the
maximum one-way measurements from the
equipment cabinet).
NOTE: Excessive and/or improperly made con-
nections increase the resistance of a cable, which
reduces the allowable cable run length.
Remove the short after the test is complete.
Repeat this test for each station cable.
Iustall bridging clips on the station blocks to
complete the cable connections.
E OF INS-
Digital Keysets (both Standard and tiecutive, display and non-display)................103 ohms/2000 ft. (609 m.)DigitalKeysetswithattachedPCandModemDataPo~Modules.....................103obms/2000ft.(609m.)FIomModemDataPortModulestosinglc-linesets................................195ohms/3800ft.(1158m.)
IMX12-Lineand~eKeyse&(standardanddisplay)...........................IMXlZLineand26iineKeysetswithDataPortModules..65ohms/l26Oft(384m.)........................50ohn@70R(295m.)IMX 12-Line and D-Line AIM Keysets.........................................82 ohmsDS9Oft. (484 m.)IMXlZLineand24-LineAIMKeysetswithDataPoltModules......................66ohms/l28Oft(39Om.)lMX8LineKeysets........................................................75ohms/1460&(445m .)IhiK S-Line Alhi Keysets (when installed one to a circuit)..........................103 OhmsIXmO R (609 nl.)IMX 8-Line AIM Keysets (when installed two to a circuit)*.........................77 ohm/lSMl ft. (457 m.)*Inter-Tel/DVK Keysets (standard and display)....................................
82 oh&l590 (484 m.)I&r-Tel/DVKKcysctswithDataPortModules...................................66oh&l28Oft.(39Om.)IMXandInter-Tel/DVKDSS/BIZUnits........................................65ohms/l26Oft.(384m.)BSEk(ACorDC).........................................................8OOohn&lS56Oft.(4742m.)SLIs(ACorDC)...........................................................8OOohms/lS56Oft.(4742n~)
Playback Devices (AC or DC)................................................800 ohnW1556Oft. (4742 m.)IndustryStandard,SmgleLineDTMFSe~(ACorDC).............................8OOohms/lU6OR(47421n.)
l The actual loop limits for &line AlM keysets installed two to a circuit varies according to the type of ins&llation method used, asshowninFi~e3-15onpage~24.LfmethodAisused(separatecabling~thelooplimitf~eachkeyset(asmeanuedfromtheequipmentcabinet
to the station location) must not exceed 77 ohms/l500 ft. (457 m.). If methods B or C are used (shared cabling), the loop Iimit for eachkeyset is reduced to 51 ohms/l000 ft. (305 m.). Also note that if shielded cable is llsed for any type of non-digital keyset insta&tion, the
actual loop limit may be reduced by as much as 20% because the foil wrapped around the wires in the cable acts as a capacitor. Do notuse shielded cable for digital keyset instaHations. Longa loop lengths can be achieved by using heavier gauge cable, such as 22AWG.
(For additional station cabling requirements, refer to page 3-6.)
Page 3-29 
						

							INSTALLATIONIssue 1, November 1994INTER-TEL#PRACTICESIMX/GMX 256 INSTALLATION & MAINTENANCE
E. CONNECTING OPTIONAL
OFF-PRFMISES EXTENSIONS (OPXs)5.19 Off-premises extensions are remote 
ESLSs,
SLIS, or single-line DTMF sets that are connected to the
256 System through telephone company OPX circuits
(or customer-provided circuits). At the MDF, the cir-
cuits are connected to Inward Dialing Cards 
(IDCs).
NOTE: 
IDCs do not support message waiting applica-
tions. If single-line sets with message waiting lamps are
installed on 
IDCs, the lamps will not function.
5.20Off-premises station instruments must be 
ACrin-
ger-equipped. The DC’s onboard high-voltage ringing
adapter 
(HVRA) provides isolation from the telephone
company OPX circuits as required by FCC regulations.
5.21Each 
DC can support up to eight off-premisesextensions. The individual 
DC circuits used for the
OPXS must be strapped for AC ringing. They 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 de-
scribed on page 3-51). (On premises, IDC circuits can
be used for installing AC or DC voice mail 
units, digital
attendants, etc.)
5.22In certain off-premises applications, voice vol-
ume levels may not be acceptable. This degradation in
voice volume is due to the natural voice frequency range
limitations of the telephone company or customer-pro-
vided circuit. To increase the voice frequency range, in-
stallation of a 
2-w&, negative impedance repeater unitis recommended. (Refer to page 2-30 for specifica-
tions.)
5.23The repeater unit is installed at the MDF between
the 
DC terminal block and the cabling to the off-pre-mises single-line station. For proper installation with
the 256 System, the following are connected to the ap-
propriate 
,pins* on the repeater unit (refer to the man-ufacturer’s instructions for proper pin locations):
-Battery (-24 to -56VDC), Ground, System Tip, Sys-
tem Ring, 
OPXTip, and OPX Ring. For complete instal-lation instructions,contact Customer Support.
Information on operating and adjusting the repeater unit
is included with the product.
524Install the off-Premises extensions as follows (re-
fer to Figure 3-18 on page 3-27):
(1)At the MDF, terminate each telephone company
OPX circuit (or customer-provided circuit) onthe tight side of the appropriate 
IDC terminal
block.
(2)Install bridging clips on the 
IDC block(s) to com-
plete the connection.(3) At the off-premises location, terminate each
telephone company OPX circuit (or 
customer-
provided circuit) on the appropriate single-line
set modular jack assembly.
F.CONNECTING THE RCPU CARD TO THE
MDF
5.25The RCPU Card is terminated at the MDF so that
it can be connected to a variety of optional equipment,
including: music sources, power failure transfer equip
ment, signaling devices, night transfer equipment, etc.
Connect the RCPU Card to the MDF as follows:
(1)
(2)
(3)
(4)Using enough 
25-pair cable to run from the
RCPU Card terminal block to the RCPU Card inthe equipment cabinet, make a termination
cable. Attach a 
%-pin female amphenol-type
connector to the RCPU Card end of the cable.
Label the connector “RCPU Card”. This connec-
tor will be attached to the RCPU Card after the
circuit cards are installed in the equipment cabi-
net.
Terminate the other end of the cable on the 
2ef
side of the RCPU Card block.
Terminate the desired optional equipment on the
right side of the RCPU Card block as shown in
Figure 3-20 on the following two pages.
Install bridging clips on the RCPU Card block to
complete the installation.
Page 3-30 
						

							INTER-TELPRACTICESIMX/GMX 256 INSTALLATION & MAINTENANCEINSTALLATIONIssue 1, November 1994FIGURE 3-20.
RCPU CARD CABLE TERMINATIONS
RCPU
CARD
41
r
RCPU
(PART OF MDF)
AMPHENOL-
CONz:TOR
L
-
-
-
--36
RB-CJr .- 11R2ENcJA1- 37Jr ,DGNC FJarusEc)
- 12NC-II-
--38
NCr- 13NC1-3SDcxcJ (NoTus=)1- 14NC1-40NC1- 16NC
66Mi40-TYPE
BLOCK
(CONTINUED
ON THE NEXT
PAGE)
Page 3-31 
						

							INSTALLATION
Issue 1, November 1994xNTER-TELPRAcTIcJ3sIMX/GMX 256 INS~TION & MAINTENANCE
FIGURE 3-20.RCPU CARD TERMINATIONS (CONT’D)
RCPU
CARDRCPU
(CONTINUED FROM
THE PREVIOUS
PAGE)
25
r-lI
AMPHENOL-
TYPE
CONNECTOR
42NC--Ll--II,, NC
-1,-44NC-- 10NC
66Ml-!5O=lYPE
BLOCK
(PART OF 
MDF)Page 3-32 
						

							lNTER-TELPRfKTIcEsIMX/GMX 256 INS-TION & MAINTENANCE
INSTALLATIONIssue 1, November 1994
G.CONNECTING OPTIONAL Tl ATARMRELAY DEVICES TO TEE MDF
5.26In addition to the Tl span connection (as outlined
on page 
3-17), Tl Cards may also be connected to op
tional Tl alarm signaling devices.
5.27Terminate each 
Tl Card alarm relay on the MDF
as follows:
(1)Run cable 
from the optional Tl alarm signaling
device(s) to the MDF.
(2)At the MDF, mount an eight-conductor modular
jack assembly.(3)Wire the cable(s) onto the modular jack. Refer to
Figure 3-21 below for a diagram of the wiring.NOTE: For information on Programming Tl
alarm relays, refer to page 5-129 in the PRO-
GRAMMING section of the manual.(4) Plug one end of a four-pair, non-reversing
(straight through), mod-to-mod line cord into the
modular jack assembly. The other end of the linecord will 
later be plugged into the alarm relay
jack on the corresponding Tl Card.
FIGURE 3-21.MODULAR JACK ASSEMBLY WIRING FOR OPTIONAL Tl
ALARM RELAYSMODULAR JACK ASSEMBLY
RlARlARlBRESET 
SETSETSEI
13
57FOUR-PAIR, 
NON-REVERSING,
MOD-TO-MOD
LINE CORD
2I
- --6
6
11 CARD ALARM
RELAY JACK
RlARlBR2COMMON COMMON CO;;ON RESET
Page 3-33 
						

							INSTALLATION
Issue 1, November 1994INTER-TELdPRACTICEslMX,‘GMX 256 INSTALLATION & MAINTENANCE
H.CO-G TWO 256 SYSTEMS
TOGETHERU!SINGTl CARDS
5.28Although most Tl interfaces will be with the
public network, it is possible to use Tl Cards to connect
two telephone systems together 
(e.g.,two 256 Systems).
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 buildingsand the cabling between 
them may be as long as 6000
feet.
5.29In addition, when connecting two 256 Systems
together, the line cord (or cabling) between the two 
Tl
Cards must be wired so that the receive pair (tip1 in and
ring1 in) on each card is connected 
to the transmit pair
(tip out and ring out) on the other card, as shown in the
figure below. (Par information on programming various
types of 
Tl installations, refer to pages 5-122to 5-129.)
FIGURE 3-22.CONNECIING TWO Tl CARDS TOGETHER
MODULAR JACK ASSEMBL’I
Tl CARD
RJ48C JACK
Tl CARD
DB15
CONNECTOROR
IODULAR JACK ASSEMBLYOR
Tl CARD
RJ45C JACK
Tl CARD
DB15
CONNECTOR
Page 3-34 
						

							INTER-TELPBACTICESIMX/GMX 256 INSTACLATION & MAINTENANCEINSTALLATION
Issue 1, November 19946. EQUIPMENT CABINET
INSTALLATION
A. UNPACKTHEEQUIPMENT
6.1Unpack the equipment and inspect the equipmentcabinet and all accompanying parts following these
guidelines:
(1)Check the parts against the packing slip and in-
spect them for damage. If any item is missing or
damaged, contact Customer 
Supportimmediate-
lY*
(2)Check all circuit card assemblies as follows:
NOTE: The cards contain static-sensitive com-ponents. Handle all cards by the edges only;
however, avoid touching the gold contacts on theside of the card that plugs into the equipment
cabinet. (For additional precautionary infonna-
tion, refer to the CAUTION on page 3-44.)
c.Check each card to ensure there is no ship
ping foam or tape attached.
d.Inspect each card for shorted components.
e.Return all cards to their protective bags untilthey are ready to be installed in the equip
ment cabinet.
B.CHECK THE EQUIPMENT CABINET
PREASSEMBLY
6.2 The equipment cabinet is shipped partially
assembled. To ensure that none of the items have been
damaged or have become unattached during shipment,
follow the instructions below and refer to the drawings
on the following pages.
(1)Position the equipment cabinet near the MDF
backboard.
(2)If desired, the equipment cabinet front door and
back panel may be removed for easier 
access to
the internal structure.
(3)
(4)
Q
To remove the backpanel:
a.Turn the two locking screws on the panel and
allow the panel to open from the top.
b.Lift the panel up off of the supporting pins
and set the panel aside.
NOTE: 
Aset of keys for the lock on the front
door is taped to the inside of the back panel.
To mnove the front &or:
a.
b.Unlock the door, open it, and (if applicable)
unhook the wire cable or chain between the
cabinet and the door.Pull/push the two spring-loaded retention
bars in the appropriate direction and slide the,door off. Set the door aside.
Check to see that the Telecom Motherboard is se-
curely installed in the rear of the equipment cabi-net (there should be 10 6-32 x s-inch screws
with self-locking star washers holding the card in
place).
Check to make sure that the metal power supplychassis is securely installed in the equipment
cabinet (the bottom edge of the chassis fits undera metal lip, and there should be three 8-32 X
j&nch screws with self-locking star washers
holding the chassis in place).
Ensure that the Telecom Motherboard power
cable is securely attached to both the Telecom
Motherboard and the back of the power supply
chassis:
a.
b.
At the rear of the cabinet, contirm that the 26
small power cable connectors are attached to
the appropriate connectors on the TelecomMotherboard. (Refer to Figures 3-23 and
3-24 on pages 3-36 and 3-37.)At the rear of the cabinet, 
confitm that the
four large power cable connectors are
attached to the appropriate connectors on the
back of the power supply chassis. (Refer to
Figure 3-25 on page 3-38.)
Page 3-35 
						

							lNS’E4LLATIONIssue 1. November 1994INTER-TELPRACTICESIMX/GMX 256 lNSTALLATION & MAINTENANCE
FIGURE 3-23.POWER CABLE CONNECTORS ON THE TELECOM
MOTHERBOARD
CPCN
CPCPBACK SIDE OF TELECOM MOTHERBOARD
I
u-u
-
ALARM
CPCp*
E
CPCXP
C
DGND
/
B
I \
+5 SEN RTN
D
DGND
+5V+5 SEN+5V
-12COMAGND
+12v
BGND
+3ov
RESV2*
+5VA-5VA
VRING-48V
KGND- RESVl*
-12COMf+5VAAGND*- -5VA+12v- VRING*
BGND-45V+3ov- KGNDRESVZ,- RESVl*
Page 3-36