AT&T System 75, Wiring Diagram

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CHAPTER 3. EQUIPMENT ROOM DESIGN
188C2 188C2
BACKBOARD
BACKBOARD
FILL
BLUE OR WHITE PURPLE
BLUE OR WHITE
CAPACITY WHITE FIELD = 1152 3-PAIR CIRCUITS
CAPACITY BLUE FIELD = 864 4-PAIR CIRCUITS OR
1152 3-PAIR CIRCUITS
CAPACITY PURPLE FIELD = 1152 3-PAIR CIRCUITS
Figure 3-6. Distribution Field Arrangement of 110-Type
Hardware—Eight 900-Pair Terminal Blocks
The following 110-type terminal blocks (Table 3-A) can be used in the
distribution field.
a.
b.
The 110AC1-300STM/6 is a factory assembled 300-pair terminal
block. It is equipped with twelve, 6-foot long, 25-pair cable stubs.
Each cable stub exits from the top of the block, and is equipped with
a 50-pin male miniature ribbon connector.
The 110AC1-300STF/6 is a factory assembled 300-pair terminal
block. It is equipped with twelve, 6-foot long, 25-pair cable stubs.
Each cable stub exits from the top of the block, and is equipped with
a 50-pin female miniature ribbon connector.
3-8