4-Pair Station Cable Circuits; Station Wiring And Associated Hardware Installation; Installing The Station Cables - AT&T 75 Wiring Manual

66-TYPE HARDWARE

4-Pair Station Cable Circuits

To determine the size of station cables containing 4-pair circuits, determine the number of
information outlets served by the equipment room cross-connect field or satellite location.
Multiply this number by 4 (see Note).
Note: This formula may not compensate for the unused 25th pair in all cases. If not,
you must allow for it.
Using the minimum size cable requirement, select a cable size that is rounded up to the next
highest available cable bundle size.

STATION WIRING AND ASSOCIATED HARDWARE INSTALLATION

Installing the Station Cables

Station labels shown in Figure 4-44 must be installed on both ends of the 25-pair station
cables. These labels are provided with the 201A cable/jack station labels (Comcode
103 969 994). These labels must match the previously installed labels at the cross-connect
field. For example, if the cable plugs into a 66-type connecting block connector associated
with jacks labeled 1 through 6, the cable label must be numbered 1 through 6. If cable/jack
labels are not being used, the label information can be written on the cable connector using a
permanent felt-tipped pen.
Figure 4-44. 25-Pair Station Cable Labels
Install the station cables between the equipment room cross-connect field and the site,
satellite, or adapter locations. If 25-pair cables are run from the equipment room to the
satellite location, A25B cables (double-ended or single-ended) are used. Multiple 25-pair
staggered finger station cables (double-ended or single-ended) can be run from the
equipment room to the satellite location. B25A cables must be used to connect the double-
ended multiple 25-pair cables to the connectorized 66-type connecting block. Bulk cables can
also be used to run from the equipment room to the satellite locations if punch-down 66-type
connecting blocks are used.
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