AT&T System 75, Wiring Diagram

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Figures
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Figure 2-26.
Block Diagram of System 75 or 75 XE Installation
110-Type Wiring Block
110-Type Index Strip With Connecting Blocks
110A-Type 100-Pair Terminal Block
110A-Type 300-Pair Terminal Block
110P-Type Terminal Block—300-Pair
Connectorized
110P-Type Terminal Block—900-Pair
Connectorized (Top)
110P-Type Terminal Block—900-Pair
Connectorized (Bottom)
3-Pair Patch Cord Used With 110-Type Hardware
F-61789 Power Adapter Cord
Designation Strip
66M1-50 Connecting Block
157B Connecting Block
183A-Type Backboard
187B1 Backboard
Power Adapter Cord
Cable Slack Managers
Model 575-4 Sneak Fuse Panel
Model 574-5 Power Transfer Unit
Trunk Concentrator Cables (WP-90929, L1 & L3)
(For 110-type Hardware Only)
Trunk Concentrator Cables (WP-90929, L2 & L4)
(For 66-type Hardware Only)
16-Port Analog Line Circuit Pack Adapter Cable
(853B Adapter)
Individual Power Supplies
AC Power Strip
346 Modular Bulk Power Supply
346A1 Power Panel Circuit Breaker Locations
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2-3
2-4
2-8
2-9
2-12
2-13
2-14
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2-23
2-24
2-25
2-27
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2-32
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