Inter-Tel Imx/Gmx 416/832 Installation Manual

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INTER-TELPRACTICES 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE INSTALLATION 
Issue 1, November 1994 
4. STATION 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 sta- 
tion locations to the station blocks at the MDF. Refer to 
page 2-4 for cabling requirements. 
4.2 Both ends of each cable should belabeled with the 
station’s circuit number (hardware address). The circuit 
number (X.Y) designates the card’s position in the 
equipment cabinet (X = l-26) and the circuit position on 
the card (Y = 1-16 for DKS-, Y = l-8 for KSCs, KSC- 
Ds, and n>cs; Y = 1-16 for SLCs). For example, circuit 
number 4.6 identifies the sixth circuit on the card in- 
stalled in slot number four. 
NOTE: When 8-line IMX AIM keysets are installed 
two to a circuit, the circuit number is separated into two 
parts (A and B) in database programming (e.g., circuit 
4.6A and 4.6B). 
4.3 When the system is first powered up, one of three 
default configurations will be used to assign extension 
numbers to the station circuits. If configuration number 
one is used, telecommunication card slots l-20 are con- 
sidered KSCs and slots 21-26 are considered LGCs. If 
configuration number two is used, slots l-10 are consid- 
ered KSCs, slots 11-19 are SLCs, and slots 20-26 are 
LGQ. If configuration number three is used (IMX sys- 
tems only), slot 1 is a KSC, slots 2-10 are DKSCs, slots 
11-19 are SLCs, and slots 20-26 are LGCs. Changes to 
any of the configurations can be made through database 
programming. Refer to PROGRAMMIN G, page 5-171, 
for more information. 
NOTE: Configuration C, which contains Digital Keyset 
Cards, is available only on IMX systems. 
4.4 The system assigns extension number 1000 to sta- 
tion circuit 1.1, extensionnumbcr 1001 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 data- 
base programming, the circuits can be assigned differ- 
ent extension numbers and/or be changed to three-digit 
extension numbers. Refer to PROGRAMMING, page 
5-58, for more information. 
NOTE: “B” circuit 8-line lMX AlM keysets do not have 
extension numbers until they are assigned in database 
programming. 
4.5 Each analog DSS/BLF Unit requires a KSC or 
K!X-D 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 Keyset Card. 
A. RUNNINGCABLE 
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 in- 
struments to beeasilyinterchanged, if necessary. How- 
ever, digital keysets, ESLSs, SLIs, single-line IYTMF 
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 keysets, 
single-line sets, and playback devices as recommended, 
extra terminal blocks and the use of cross-connect wir- 
ing 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 accord- 
ing to the National Electrical Code and local build- 
ing codes. 
Avoid cable runs parallel to fluorescent light fixtures 
or AC lines not in conduit. If these obstacles are un- 
avoidable, run the cables across them at right angles. 
Do not run station cables inside electrical conduit al- 
ready occupied by AC power cable. Q”o do so is a 
violation of the National Electrical Code.) 
Do not run cables near equipment with electric mo- 
tors 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) cable runs tomulti- 
ple station locations do not include 
AC-ringing sing- 
le-line sets, AC-ringing auxiliary equipment, or 
trunks in a cable being used for analog keysets, At- 
tendant Computer Consoles, or analog DSS/BLF 
Units. Stations using analog keyset circuits should 
be routed in separate multi-pair cable runs. 
Do not exceed the loop limit measurements (using 
24AWG wire) for the station cable lengths as out- 
lined in the table on page 3-30. The resistance val- 
ues (in ohms) are loop measurements; the distance 
values (in feet/meters) are the maximum one-way 
measurements from the equipment cabinet. 
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							IFWMLLATlON Issue 1, November 1994 lNTER-TELPRAcTIcEs 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
4.7 Since the IMX 416/832 System utilizes digital 
voice 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. 
0 Do not parallel cables (i.e., do not “double up on the 
copper”). 
0 Do not “bridge” or “Y” off the cable to another loca- 
tion. 
0 Unlike analog keysets, the digital keysets do not 
need to be routed in separate multi-pair cable runs. 
For example, if using 25pair 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. 
B. TERMINATINGTEIECABLESAT 
S’lXI’ION LOCATIONS 
Digital Keysets 
41 Terminate the digital keyset station cables on four- 
or six-conductor modular jack assemblies at the station 
locations. 
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. 
FIGURE 3-l. DIGITAL KEYSET MODULAR JACK ASSEMBLY WIRING 
RING 
I 
FOR DlGlTAL KEYSETS 
USING FOUR-CONDUCTOR JACKS 
RING 
I II I 
‘I 
I I 
I 
I TIP 
FOR DIGlTAL KEYSETS 
USING SIX-CONDUCTOR JACKS 
Page 3-S  
						

							INTER-TELPRACTICES 
IMX/GMX 416/832 INSTALLATION & -ANCE INSTALLATION 
Issue 1, November 1994 
Analog Station Instruments 
4.10 
Terminate the analog keyset, analog DSS/BLF 
Unit, Attendant Computer Console, single-line set, and 
playback device station cables on six-conductor modu- 
lar jack assemblies at the station locations. (For excep- 
tions to this, refer to the NOTE following section A on 
the previous page.) 
4.11 Do not mount the assemblies on the wall at this 
time; they will be wall mounted later when the station 
instrnments are installed. Refer to Figure 3-2 below for 
a wiring diagram. 
CAUTION 
lf the power pair (W/BL, BL/W) is reversed, in- 
stalling a keyset, Attendant Computer Console, 
or DSS/BLF Unit will open the fuse or associated 
thermistor on the Keyset Card. If the card has a 
fuse, this affects operation of all station instru- 
ments connected to that card. If tip and ring (W/ 
BL, BL/W) is reversed for DC-ringing single-line 
sets, the instrument may ring continuously. 
FIGURE 3-2. ANALOG STATION MODULAR JACK ASSEMBLY WIRING 
WlBL I 
w/o 
WIG I 
FOR ANALOG KEYSETS, 
AlTENDANT COMPUTER CONSOLES, 
AND ANALOG DSS/BLF UNITS BIJW 
w/o 
WIG 
FOR SINGLE-LINE SETS 
AND 
PLAYBACK DEVICES 
NOTE: The W/BL and BL/W conductors for the two types of stations are reversed. If the type of station 
instrument is changed, the modular jack must be rewired. 
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							INSTALLATION Issue 1, November 1994 INTER-TELPRACTICES 
lMX/GMX 416/832 INS’IALLATION 8z MAINTENANCE 
5. ASSEMBLING THE MAIN 
DISTRIBUTION FRAME (MDF) 
BACKBOARD 
5.1 The main distribution frame (MDF) is the point at 
which the station instruments, trunks, and auxiliary sys- 
tem equipment are connected to terminal blocks (or, in 
the case of Tl spans and optional Tl equipment, modu- 
lar jack assemblies are used instead). These terminal 
blocks (or modular jacks) are then connected to the 
416/832 System. It is extremely important that the con- 
nections be made carefully and accurately. 
NOTE: To simplify the MDF installation instructions, 
this manual outlines basic one block to one card installa- 
tion using bridging clips. However, it is quite accept- 
able, and in some situations more functional, to use 
additional blocks and then cross connect between them. 
5.2 
(1) 
(2) Assemble the MDF as follows: 
Mount at least a 4 x 8-foot (1.2 X 2.4meter), 
a-inch plywood backboard at the MDF loca- 
tion. (Depending on the number of stations and 
trunks to be installed, a larger backboard may be 
necessary.) 
Attach the 66Ml-Xl-type terminal blocks to the 
plywood backboard. Refer to Figure 3-3 on the 
next page for a sample MDF block layout and 
cable assignments. Blocks include: 
l Up to 51 blocks for connecting CO trunks and 
the 25-pair cables for the Loop/Ground Start 
Cards (LGCs) and/or the Loop Start Cards 
G-=4- 
l Up to 51 blocks for connecting DID trunks 
and the 25-pair cables for the Inward Dialing 
Cards (IDCs). Up to 51 blocks for connecting E&M trunks 
and the 25-pair cables for the E&M Cards 
Up to 52 blocks for connecting station cables 
and the 25-pair cables for the station cards - 
Digital Keyset Cards (DKSCs) for digital 
keysets; Keyset Cards (KSCs or KSC-Ds) for 
analog keysets, analog DSWBLF Units, and I 
Attendant Computer Consoles; Single-Line 
Cards (SLCs) for single-line sets and play- 
back devices; and Inward Dialing Cards 
(ID&) for off-premises extensions and/or 
on-premises single-line sets and playback 
devices. 
NOTE: 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 Matrix Card 
cable and cables for music sources, paging 
equipment relay control, power failure trans- 
fer equipment, night transfer equipment, 
general signaling devices, etc. 
One block for connecting the Expansion 
Card cable and cables for night transfer 
equipment, general signaling devices, etc. 
(3) If any Tl spans or any optional Tl alarm signal- 
ing devices are to be installed, attach eight-con- 
ductor modular jack assemblies to the MDF as 
required. (For complete information on install- 
ing Tl spans, refer to page 3-18.) 
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							INTER-TELPRACTICES 
IMTVGMX 416/832 INSTALLATION & MAINTENANCE INSTALLATION 
Issue 1. November 1994 
FIGURE 3-3. SAMPLE MDF BLOCK LAYOUT AND CABLE ASSIGNMENTS 
TO CENTRAL 
OFFICE 
--+ TO STATIONS  LGC OR LSC 
CO TRUNKS 
l-6 
KSC KSC 
SLC 
- 
- - 6.1 
6.6 
- 0.1 
T 0.16 
KSC 
21 
-II 26 
LGC OR LSC 
CO TRUNKS 
6-16 
KSC SLC 
SLC 
10.1 
D 10.16  6.1 l-l-l 6.6 
EMC 
E&M TRUNKS 
l-4 
KSC 
3.1 
I 3.6 
KSC KSC 
7.1 
I 7.6 
KSC SLC 
11.1 
I ll.l( 
SLC  DID %NKS 
l-6 
TO EXIERNAL 
EQUIPMENT 
121 
Bl 121% 
CABLES 
- TO 
416/632 
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							llWMLLATlON Issue 1, November 1994 INTER-TELPRACTICES 
IMX/GMX 416/832 INSTALIATION & MAINTENANCE 
A. CONNECTING THE TRUNK CABLES TO 
THEMDF 
co lhlnb 
5.3 Connect the CO trunks and Loop/Ground Start 
Card (LGC) and/or Loop Start Card (LX) cables as out- 
lined 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 to Figures 3-5 and 
3-6 on the following pages. 
(1) 
(2) 
(3) Cross connect the CO trunks from the telephone 
company RI-type blocks to the right side of the 
LGC/LSC blocks. 
NOTE: For additional lightning protection, see 
paragraph 5.6 on the next page. 
MefIr& A: Using enough 25-pair cable to run 
from the LGC/LSC blocks to the cards, make the 
termination cables. Attach a 50-pin female am- 
phenol-type connector to one end of each LGC/ 
LSC cable. Label each connector and cable end 
with the appropriate slot number (for example, 
SLOT-21). These connectors will be attached to 
the cards after they are installed in the equipment 
cabinet. 
Me&xl B: Using enough 25pair cable to run 
from the LGC/LSC blocks to the cards, make the 
special termination cables. Attach up to three 
X)-pin female amphenol-type connectors to one 
end of each LGC/LSC cable as shown in Figure 
3-6. Connect CO trunks 1-S to one connector, 
trunks 9-16 to another connector, trunks 17-24 
to a third connector, and so on for each cable. La- 
bel each connector with the appropriate slot 
number (for example, SLOT-21). These connec- 
tors will be attached to the cards after they are in- 
stalled 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 Fig- 
ure 3-4 on the next page). NOTE: Ferrite beads must be installed to meet 
Part 15 of FCC regulations. Refer to REPLACE- 
MENT PARTS for the part number. 
(4) Terminate the other end of each 25-pair cable on 
the left side of the corresponding LGC/LSC 
block. 
(5) Install bridging clips to complete the connec- 
IiOnS. 
DID “hunks 
5.4 
Connect the Direct Inward Dialing (DID) trunks 
and Inward Dialing Card (IDC) cables as follows. Refer 
to Figure 3-7 on page 3-16 and Figure 3-19 on page 
3-29. 
NOTE: Besides DID trunks, IDCs can also be used to 
install single-line sets, playback devices, and off- 
premises stations. Any combination using the eight cir- 
cuits on the card is possible. Refer to pages 3-22 to 3-29 
for station installation instructions. 
(1) 
(2) 
(3) 
(4 
(5) 
Cross connect the DID trunks from the telephone 
company RJ-type blocks to the right side of the 
IDC 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 ter- 
mination 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 ap 
propriate slot number (for example, SLOT-26). 
These connectors will be attached to the Inward 
Dialing Cards after the telecommunication 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 Fig- 
ure 3-4 on the following page). 
Terminate the other end of each 25-pair cable on 
the Zefi side of the corresponding IDC block. 
Install bridging clips to complete the comtec- 
tions. 
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							INTER-TELPRACTICES 
IMX/GMX 416/832 INSlALLATION & MdNTJZNANCE INSlALLATION 
Issue 1, November 1994 
E&M’Jhmks 
5.5 Connect E.&M trunks and E&M Card (EMC) 
cables as follows. Refer to Figure 3-8 on page 3-17. 
(1) Cross connect the E&M trunks from the tele- 
phone company RI-type blocks to the right side 
of the EMC blocks. 
NOTE: For additional lightning protection, see 
paragraph 5.6. 
(2) Using enough 25pair cable to run from the EMC 
blocks to the E&M Cards, make the termination 
cables. Attach a 50-pin female amphenol-type 
connector to one end of each EMC cable. Label 
each connector and cable end with the appropri- 
ate slot number (for example, SLOT-26). 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 25pair cable just below 
the amphenol-type comtector (as shown in Fig- 
ure 3-4 below). 
(4) Terminate the other end of each 25pair cable on 
the Zefi side of the corresponding EMC block. 
(5) Install bridging clips to complete the comrec- 
tiOIlS. 
Lightning Protection 
5.6 For additional lightning protection, install gas dis- 
charge 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 in- 
stalled directly between the telephone company RJ-type 
block and the system’s CO/DID/E&WOPX 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 light- 
ning, it is recommended that the cable between the tele- 
phone 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 
25-PAIR CABLES 
TO THE MDF 
FERRITE 
BEADS 
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							INSTALLATION 
Issue 1, November 1994 INTER-TELPRArnCEs 
IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
FIGURE 3-5. LGC!/LSC BLOCK CABLE TERMINATIONS (METHOD A) 
LOOP/GROUND 
START CARD OR 
LOOP START 
CARD 
r 
LGC/LSC 
TIP 
I 
I ---43 
AMPHENOL- 
TYPE 
CONNECTOR 
66Ml-50.TYPE 
BLOCK 
(PART OF MDF) 
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							INTER-TELPRAcTICE!s 
ITM.X/GMX 416/832 INSTALLATION & MA@TENANCE lNSTALLATION 
Issue 1, November 1994 
FIGURE 3-6. LGC/LSC BLOCK CABLE TERMINATIONS (METHOD B) 
Rl 
- 
- 
- 
- 
- 
- 
- 
- 
TRUNKS 17-24 
TRUNKS a-1 6 
\ TRUNKS 
l-6 
WBL-OWR S16 
BRBW 
25PAIR 
CABLE TO - 
MDF -m 
- 
- 
- 
- 
- 
- 
- 
- 
T17 
- 
- 
- 
- 
- 
- 
- 
- 
LGCILSC 
66Ml-SO-TYPE BLOCK 
(PART OF MDF) 
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							INSTALLATION - 
Issue 1, November 1994 INTER-TELPRACTICES 
lMX/GMX 416/832 lNSlXLLATION & MAINTENANCE 
FIGURE 3-7. IDC BLOCK CABLE TERMINATIONS 
IDC 
np 
RING - 
TIP - 
1.2 1 r 1.2 - 
RINQ - 
INWARD 
DIALING 
CARD 
AMPHENOL- 
TYPE 
CONNECTOR 
1 
- 
66Ml -%-TYPE 
BLOCK 
(PART OF MDF) 
TGO 
RJ 
NOTE: The AC Enable terminations shown above are used only when installing single-lines sets and play- 
back devices, not DID trunks. For information on their use, refer to pages 3-22 and 3-28. 
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