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DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Install and Wire Telephones and Other Equipment
Page 5-61Multi-point Adapters
5
Multi-point Adapters
Multi-point Adapters are used to provide signal fanout of the T-interface. Fanout
can be performed at the work station by the BR851-B or the 367A. These
adapters support more than one ISDN terminal per horizontal 4-pair D-inside wire
(DIW). To support multiple horizontal runs, perform fanout in the satellite closet by
an MDF with multiple common rows. The 110RA1-12 provides fanout for 2
horizontal runs and contains the 100 Ohm terminating resistor. This can be used
for Basic Multi-point or point-to-point with terminating resistor in the closet. Other
fanout blocks include the 110AB1-025M and the 110AB1-050M.
BR851-B Adapter (T-Adapter)
The BR851-B supports 2 terminals on 1 multi-point BRI at the work station. It is a
T-shaped device used to fanout transmission and power. The BR851-B is an
8-pin device with a single plug and 2 jacks. See Figure 5-26
.
Figure 5-26. Wiring Diagram of BR851-B
Figure Notes
1. Wire Pairs
2. Pin Numbers
3. Modular Plug (Male)
4. Female
5. Two 8-pin Modular Jacks
6. T-Type Adapter
3
4
4
5
1
1
1
2
2
2
4
4
4
R
R
R
8
8
8
4
4
4
T
T
T
7
7
7
3
3
3
R
R
R
6
6
6
1
1
1
T
T
T
5
5
5
1
1
1
R
R
R
4
4
4
3
3
3
T
T
T
3
3
3
2
2
2
R
R
R
2
2
2
2
2
2
T
T
T
1
1
1
6