Connecting the main distribution frame to stations and the public switched telephone network
158
Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway
December 2003
The 900-pair 110P-type terminal blocks that can be used are:
•
110PE1-900CT/FT
—
25-pair connector on the white field and field-terminated on the blue field
•
110PE1-900FT
—
Field-terminated on both the white and blue fields
Site locations
Site locations are closets that provide a point in the station wiring for the administration of remote
powering. Adapters are used at site locations to terminate the 25-pair station cables and provide
connection points (modular jacks) for power adapters and 4-pair station cables.
The 258A and BR2580A adapters plug into a 25-pair female cable connector. These adapters divide the
25-pair cable into six 4-pair (modular jack) circuits. See
Figure 63, 258A and BR2580A Adapters,
on
page 164.
The 356A adapter plugs into a 25-pair female cable connector. See
Figure 64, 356A Adapter,
on page
165. The 356A adapter divides the 25-pair cable into eight 3-pair circuits. Although the circuits are 3-
pair, the adapters modular jacks will accept the 8-wide modular plug used on the 4-pair station cable.
CAUTION:
Adapters wired similarly to the 356A should not be used. Their jacks do not accept 4-pair
plugs.
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 feet (76.2 meters)
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
•
4-pair station circuits
on page 159
•
3-pair to 4-pair station circuit distribution
on page 159
•
Connected cable station adapters
on page 164
Lists of telephones and consoles currently sold are provided in
Connectable telephones and consoles
on
page 194.