Brim Wiring Chart - Nortel BCM50 Installation Manual

BRIM wiring chart

The digital BRI ISDN lines are connected to the BRIM through the RJ-45 jacks on the front of the
media bay module. You can connect up to four BRI ISDN lines to the BRIM.
The following diagram and tables apply to S-Loop and T-Loop connections. S-Loop are used to
connect S-Loop devices such as video phones, terminal adapters, and Grp 3 Fax machines. The
T-Loops are used to connect to the CO/PSTN.
Warning: The BRIM must only be connected to an NT1 provided by the service provider.
The NT1 must provide a Telecommunication Network Voltage (TNV) to Safety Extra Low
Voltage (SELV) barrier.
Figure 3 BRIM RJ-45 ports
The wiring details for the RJ-45 ports are listed in the table below.
BRIM RJ-45 port wiring
Table 1
Pin
1
2
3
4
5
6
7
8
BRIM
RJ-45 jacks
Signal
No connection
No connection
+ Receive (+Rx)
+ Transmit (+Tx)
- Transmit (-Tx)
- Receive (-Rx)
No connection
No connection
Signal on system side
No connection
No connection
+Tx
+Rx
-Rx
-Tx
No connection
No connection
1 2 3 4 5 6 7 8
RJ-45 pin out
BRIM wiring chart
17