Lucent Technologies Release 6 manual Multi-point Adapters, BR851-B Adapter T-Adapter

DEFINITY Enterprise Communications Server Release 6	Issue 5
Installation and Test for Multi-Carrier Cabinets 555-230-112	May 1998

5Install and Wire Telephones and Other Equipment

Multi-point Adapters Page 5-61

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.

					3
2	8	7	6	5	4	3	2	1	6
1	4	4	3	1	1	3	2	2	5
	R	T R T R				T R T

R T R T R T R T

R T R T R T R T

1 4 4 3 1 1 3 2 2

1 4 4 3 1 1 3 2 2

2 8 7 6 5 4 3 2 1

4

2 8 7 6 5 4 3 2 1

4

Figure Notes
1.	Wire Pairs	4.	Female
2.	Pin Numbers	5.	Two 8-pin Modular Jacks
3.	Modular Plug (Male)	6.	T-Type Adapter

Figure 5-26. Wiring Diagram of BR851-B