Connectorized 66-Type Connecting Blocks - AT&T System 75 Wiring Diagram

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CHAPTER 2. HARDWARE (66/110-Type)

the wall or on a backboard. These connecting blocks are used in the

equipment room for the distribution field.

Figure 2-12. 66M1-50 Connecting Block

Connectorized 66-Type Connecting Blocks

The connectorized version of the 66-type connecting block is the 157B

(Figure 2-13) connecting block. It consists of a 66M1-50 connecting

block prewired to a 50-pin connector mounted on each side of the

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System 75 xe