Closets
Issue 3 January 2008 43
4-pair station cable — Use this cable when 4-pair station cables are to be field-terminated on
the 110-type terminal blocks in the equipment room or satellite closet and the information outlets
require push-on connections.
Figure 17: Example of extending 4-pair station cables
Closets are intermediate points between the Main Distribution Field and the endpoint. They are
used to distribute wiring to multiple destinations via cross-connect equipment.
There are two different types of closet configurations. Satellite closets are usually distribution
points for multiple site closets. However, information outlets may be wired directly to a satellite
closet. Site closets are the last cross-connection point before the end user information outlet.
Satellite and site closets may be used to apply bulk station power to information outlets.
Satellite locations
Satellite locations are closets that provide an administration point (using cross-connect
equipment) for station cables and where adjunct power may be applied. The station cable
circuits from the equipment room MDF are 3-pair. At the satellite location, 4-pair circuits run to
the information outlets. The hardware used is 110-type terminal blocks.
Figure notes:
1. Station Cable
2. Information Outlet
3. 451A In-Line Adapter
4. 258A Adapter
5. 4-Pair Station Cable
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