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DEFINITY Made Easy Tools
Issue 3, December 2001
Install Telecommunications Cabling
Station Circuit Distribution from Equipment Room
This section explains the station circuit distribution from the equipment room to the information outlets for new wiring installations. Example connection diagrams are provided to show the options for running and connecting the station cables.
If most of the telephones/voice terminals that require remote powering are within 250 ft (76.2 m) of the equipment room, 4-pair station circuits are run from the equipment room to the information outlets. If this is not the case, or if the customer requires 2-point administration, 3-pair station circuits are run from the equipment room to satellite locations. Then, the 4-pair station circuits are run from the satellite locations to the information outlets.
This section has information about
Lists of terminals that can be connected to the system are provided in
4-Pair Station Circuits
Four-pair circuits can be run directly from an equipment room MDF to a 258A or BR2580A adapter as shown in 4-Pair Circuit Distribution and Connectivity. The 4-pair station cables connect the adapter to the information outlets.
The 4-pair station cables can be run directly from the equipment room to the information outlets if 4-pair terminal blocks are used in the distribution field. See 4-Pair Run to Equipment Room or Satellite Location. The station cables must be field-terminated on the 110-type terminal blocks.
If 110-type terminal blocks are used with a modular plug-ended station cable, an adapter can be connected directly to the 110-type terminal block connectors. See 4-Pair Run to Equipment Room or Satellite Location.
3-Pair to 4-Pair Station Circuit Distribution
3-Pair to 4-Pair Satellite Location Connectivity shows the 3-pair circuit distribution from an equipment room MDF to a satellite location using 110-type hardware. Four-pair circuits are distributed from the satellite location to the information outlets.
Three-pair circuits can also be run directly from the equipment room MDF to a 356A adapter as shown in 3-Pair to 4-Pair Circuit Distribution and Connectivity. Four-pair station cables connect the adapter to the information outlets. Four-pair station cables can be run directly from a satellite location to the information outlets as previously described.
