187B1 Backboard; Power Adapter Cords - AT&T System 75 Wiring Diagram

CHAPTER 2. HARDWARE (66/110-Type)

187B1 Backboard

The 187B1 backboard (Figure 2-15) provides 16 pegs that are used to
dress the cross-connecting wire between connecting blocks. The
187B1 backboards can be used with any arrangement of 66-type
connecting blocks.
187B1 BACKBOARD ORDERING INFORMATION

Power Adapter Cords

The power adapter cord (Figure 2-16) connects an adjunct power
supply to a 4-pair station circuit terminated on a 66-type connecting
block. The cord consists of a 2-pair cable equipped with a 6-conductor
modular plug. The plug end connects to the power supply and the other
end terminates on the 66-type connecting block.
2-28
Figure 2-15. 187B1 Backboard
Description
187B1 Backboard
Comcode
101 937 944