Lucent Technologies Release 6 Closet Mounted 110RA1-12, Terminating Resistor Block 110RA1-12

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 5-59

Closet Mounted (110RA1-12)

The 110RA1-12 terminating resistor block is designed to mount in the telecommunications wire closet. It consists of twelve 2-pair circuits and provides the 100 Ohm termination used for ISDN-BRI circuits.

Figure 5-24 shows the wiring of the 110RA1-12. Three rows of 110D-4 connector blocks are mounted on a printed wire board along with circuit resistors and capacitors. The bottom row is designated as the input row and the top and middle rows are designated as the output rows. The circuit assembly is mounted on a standard 110A-100 pair mounting base. The 110RA1-12 is shipped with preprinted designation strips to simplify circuit identification and installation.

		1		2
1	2	3	4	45 46 47 48
3					6
4

5 7

8

Figure Notes

1.Circuit 1

2.Circuit 12

3.Output Row “A”

4.Output Row “B”

5.Input Row “C”

6.Only First Circuit Shown to All 12 Circuits (2APR) Per Block

7.110D-4 Connector Block

8.Printed Circuit Board Mounted on Standard 110A or 100APR Block

Figure 5-24. Terminating Resistor Block (110RA1-12)