Installing Bri Trunks; Bri Trunks (Figure 3-6) - NEC Aspire S Manual

Section 3: Installing Extensions and Trunks

INSTALLING BRI TRUNKS

BRI Trunks (Figure 3-6)

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 PCB 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 cabinet slot equipped with a 2BRI PCB.
Installing BRI Trunks
1.
2.
3.
4.
3-10 ◆ Section 3: Installing Extensions and Trunks
For each T-Bus or S-Bus line, run cross-connect wires between the pins on the cross-connect block
and the station block.
Install bridging clips as required.
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 Termi-
nation. 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.
Plug in the corresponding RJ-61 connector to the BRI PCB connector.
Note: Repeat steps 1-4 for each BRI trunk. Label cross-connect blocks A2, A3, etc.
12345678
RJ45 Cable Connector - CN2
T-Bus Connection
Pin No.
1
2
3
4
5
6
7
8
Connection
-
-
TA
RA
RB
TB
-
-
Aspire S Hardware Manual