AT&T System 75, Wiring Diagram

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CHAPTER 3. EQUIPMENT ROOM DESIGN
site/satellite location or adapter. Staggered-finger cables are
recommended for all multiple 25-pair station cables.
Staggered-finger cables are available in both double-ended and
single-ended types.
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Bulk Cable—This cable is the same as the connectorized 25-pair
cable or multiple 25-pair cable; however, the bulk cable is not
equipped with connectors. Use this cable between the equipment
room and satellite closets when both are equipped with
punch-down type terminal/connecting blocks.
Nonconnectorized 4-pair station cable—Use this cable when
4-pair station cables are to be field-terminated on the 110-type
terminal blocks/66-type connecting blocks in the equipment room
or satellite closet and the information outlets require push-on
connections.
Single modular plug-ended 4-pair station cable(Figure 3-60)—Use
this cable between adapters and information outlets that require
push-on connections. It can also be used when 4-pair station
cables are field-terminated on the 110-type terminal
blocks/66-type connecting blocks in the equipment room or
satellite closet and modularly connected to information outlets.
The station cables are available in the following lengths:
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10 feet
25 feet
50 feet
75 feet
100 feet
150 feet
200 feet.
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Double modular plug-ended 4-pair station cable—Use this cable
to provide nonstandard length runs between adapters and
information outlets with push-on connections. It can also be used
between adapters and modularly connected information outlets. It
is available in the same lengths as the single modular plug-ended
cable (see Note).
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