AT&T 75 - Station Wiring and Associated Hardware Installation

110-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 twenty-fifth 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 3-80 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 110 labels at the cross-
connect field. For example, if the cable plugs into a 110 terminal block connector associated
with jacks labeled 1 through 6, the cable label must be numbered 1 through 6.
Figure 3-80. 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, A25D cables are used. If multiple 25-pair staggered finger station cables
(male to male) are to be run from the equipment room to the satellite location, B25A cables
must be used to connect the multiple 25-pair cables to the 110 terminal block connectors.
Bulk cables can also be used to run from the equipment room to the satellite locations if
field-terminated 110 terminal blocks are used.
If cables are to be connected to site locations or adapters, B25A cables connect to the
terminal blocks at the equipment room. The B25A cables are run to the site locations or
adapters or connect to the multiple staggered-finger (male to female) station cables (see
Figure 3-81). The staggered-finger station cables are run to the site locations or adapters.
Figure 3-82 shows the labeling scheme for 4-pair circuits run from the equipment room to
the information outlets. The labeling scheme for 3-pair circuits run from the cross-connect
field to satellite locations is discussed under Installing 110-Type Hardware at
Satellite Locations.
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