Chapter 3 - Installing Extensions and Trunks
Chapter 3 3 - 13
SECTION 3-9
INSTALLING BRI TRUNKS
3.9.1 BRI Trunks (Figure 3-9)
BRI trunks must be bridged from the telco RJ21X to a line cross-connect (A) block. Each BRI Trunk requires
one-pair cross-connect from the RJ21X to the line (A) block.
The A block connects to the BRI blade with a 25-pair cable and an RJ-61 jack. The line (A) block should be
arranged in groups of 2 BRI trunks (4 pins) to correspond with the chassis slot equipped with a 2BRI blade.
Installing BRI Trunks
1. For each T-Bus or S-Bus line, run cross-connect wires between the pins on the cross-connect block and
the station block.
2. Install bridging clips as required.
3. From the cross-connect block, connect 2 pairs of wires.
For T
-Bus: The opposite end is an 8-pin modular connector which is plugged into the NT1 Termination.
Connect a line cord from the NT1 Network Line Termination to the telco BRI line. Connect the power cord
to the NT1 Network Termination unit.
4. Plug in the corresponding RJ-61 connector to the BRI blade connector.
RJ61 Cable Connector - CN7, CN8
T-Bus Connection
Pin No. Connection
1-
2-
3TA
4RA
5RB
6TB
7-
8-
Repeat steps 1-4 for each BRI trunk. Label cross-connect
blocks A2, A3, etc.
12345678
To Next Page
Loading...
