Lucent Technologies Release 6 manual T1 R1

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

BRI Terminating Resistor Page 5-60

Figure 5-25 shows the wiring connections for the 110RA1-12 terminal block. The TN556 Basic Rate Interface (BRI) switch port is terminated to bottom row C.

1

10

11

12

6

2

8

7

T R T1 R1

	3	9
4		5

Figure Notes
1.	Part of Terminating Resistor Block	7.	Basic Multi-point Option
2.	White or Purple Field	8.	2-Pair Cross-Connect
3.	Part of 4-Pair Blue Field	9.	4-Pair Horizontal Cables
4.	From ISDN T-interface Circuit (2-Pair)	10.	Row “A”
5.	To ISDN S/T-interface terminals	11.	Row “B”
6.	2-Pair Cross-Connect	12.	Row “C”

Figure 5-25. Typical Installation of Terminating Resistor Block (110RA1-12)

For point-to-point wiring, the top row connects to the blue station field. The pair connects from the 110RA1-12 to the standard 4-pair circuit. Pair 1 from the 110RA1-12 connects to Pair 1 of the station field, and Pair 2 connects to Pair 3 of the station field.

Two terminal basic multipoint applications are accommodated by connecting row B (output) to the second terminal common to the multipoint circuit.