AT&T System 75, Wiring Diagram

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Hardware Equipment Room Applications
c .
d.
e.
f .
The 110AB1-100FT is a 100-pair terminal block (110AW1-100) for
use when the wiring is to be field terminated. It provides termination
space for twenty-four 4-pair circuits.
The 110AB1-300FT is a 300-pair terminal block (110AW1-100) for
use when the wiring is to be field terminated. It provides termination
space for seventy-two 4-pair circuits.
The 110AC1-100FT is a 100-pair terminal block (110AW1-100) for
use when the wiring is to be field terminated. It provides termination
space for thirty-two 3-pair circuits.
The 110AC1-300FT is a 300-pair terminal block (110AW1-100) for
use when the wiring is to be field terminated. It provides termination
space for ninety-six 3-pair circuits.
Table 3-A. Distribution Field—110A-Type Terminal Blocks
3-Pair Port Field
4-Pair Station Field
3-Pair Station Field
(Purple) (Blue)
(Blue or White)
110AC1-300STM/6 110AB1-100FT
110AC1-100FT
110AC1-300STF/6 110AB1-300FT 110AC1-300FT
110AC1-300STM/6
110AC1-300STF/6
The following 300-pair 110-type terminal blocks (Table 3-B) can be used
in the distribution field.
a.
b.
c .
The 110PC1-300CT is a factory assembled 300-pair terminal block.
It is equipped with twelve female 50-pin miniature ribbon connectors
that are mounted at the top of the block. The terminal block provides
termination space for ninety-six 3-pair circuits.
The 110PB1-300CT is a factory assembled 300-pair terminal block.
It is equipped with twelve female 50-pin miniature ribbon connectors
that are mounted at the top of the block. The terminal block provides
termination space for seventy-two 4-pair circuits.
The 110PB1-300FT is a 300-pair terminal block (110DW1-100) for
use when the wiring is to be field terminated. It provides termination
space for seventy-two 4-pair circuits.
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