AT&T System 75 Wiring Diagram page 37

CHAPTER 2. HARDWARE (66/110-Type)
The 110A-type hardware can be used for the trunk/auxiliary field and all
distribution fields (port, auxiliary, and station). The following 110A-type
hardware is available.
110AE1-75FT terminal block—A kit of parts for field termination
of cables on a 100-pair wiring block (110AW1-100). It provides
space to terminate 8 three-pair and 12 four-pair circuits.
110AB1-100FT terminal block—A kit of parts for field termination
of cables on a 100-pair wiring block (110AW1-100). It provides
space to terminate 24 four-pair circuits.
110AC1-100FT terminal block—A kit of parts for field termination
of cables on a 100-pair wiring block (110AW1-100). It provides
space to terminate 32 three-pair circuits.
110AB1-300FT terminal block—A kit of parts for field termination
of cables on a 300-pair wiring block (110AW1-300). It provides
space to terminate 72 four-pair circuits.
110AC1-300FT terminal block—A kit of parts for field termination
of cables on a 300-pair wiring block (110AW1-300). It provides
space to terminate 96 three-pair circuits.
110AC1-300STF/6 terminal block—A factory-assembled 300-pair
connectorized terminal block that provides space to terminate 96
three-pair circuits. Twelve, 25-pair (6-foot long), cables equipped
with female connectors exit from the top of the block. The 25-pair
cables are factory-terminated on the wiring block in continuous
numerical order.
110AC1-300STM/6 terminal block—A factory-assembled 300-pair
connectorized terminal block that provides space to terminate 96
three-pair circuits. Twelve, 25-pair (6-foot long), cables equipped
with male connectors exit from the top of the block. The 25-pair
cables are factory-terminated on the wiring block in continuous
numerical order.
The 110AW1-100 or 110AW1-300 wiring blocks can be ordered
separately. Also, the 3- or 4-pair connecting blocks (110C-3 or 110C-4,
respectively) must be ordered separately.
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