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Install the Basic Rate Interface (BRI) Terminating
Resistor
Issue 1 September 1995
9-41
Figure 9-17. 8-Pin Terminating Resistor Adapter (440A4)
Closet Mounted (110RA1-12)
The 110RA1-12 terminating resistor block is designed to mount in the
telecommunications wire closet. It consists of 12 (2-pair) circuits and provides
the 100 Ohm termination used for Integrated Services Digital Network (ISDN)
Basic Rate Interface (BRI) circuits. Figure 9-18 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. 8-Wide Plug
2. Cord
3. Plastic Housing
4. 8-Wide Jack
3
8
4
5
1
6
2
7
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