AT&T System 75, Wiring Diagram

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110-Type Hardware Description
Test Cords
The D test cord provides test access to one pair of wires without
removing any jumpers.
D TEST CORD ORDERING INFORMATION
Length
Cord
D Test Cord 4 ft
402 023 949
D Test Cord 8 ft
402 023 956
Comcode
Jumpers
Solid wire jumpers can be used to make cross-connections instead of
the 1- and 3-pair patch cords. The jumpers are terminated on the
connecting blocks with an impact tool.
Jumper Wire
JUMPER WIRE ORDERING INFORMATION
Description
Comcode
(Order by Footage)
DT 24M-Y/BL/R/G
2-Pair
103 252 557
DT 24P-W/BRN
1-Pair
102 484 045
DT 24P-Y/BL
1-Pair
102 379 195
DT 24P-Y/G
1-Pair
103 252 565
DT 24P-Y/O
1-Pair
103 252 573
DT 24P-Y/R
1-Pair
103 252 581
Tools
The following tools are required terminate the wires/jumpers on
field-terminated wiring blocks:
●
●
●
The D impact tool (AT-8762) is a single-wire termination tool
The 788J1 impact tool will terminate five pairs of wire at a time
The 788K1 conductor retention tool is used to secure cable pairs
in the wiring blocks when connecting blocks are being removed
from the wiring blocks.
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