Brim Wiring Chart - Nortel BCM200 Installation And Maintenance Manual

Appendix D

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 (MBM) (see
BRIM.
Figure 193, and
to connect S-Loop devices, such as video phones, terminal adapters, and group 3 fax machines.
The T-Loop connections are used to connect to the CO/PSTN.
Warning: For a U-Loop connection, the BRIM must be connected only 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 193 BRIM RJ-45 ports
Table 89 lists the wiring details for the RJ-45 ports.
Table 89 BRIM RJ-45 port wiring
Pin
1
2
3
4
5
6
7
8
Figure
Table 89 apply to S-Loop and T-Loop connections. S-Loop connections are used
BRIM
RJ-45 jacks
Signal
No connection
No connection
+ Receive (+Rx)
+ Transmit (+Tx)
- Transmit (-Tx)
- Receive (-Rx)
No connection
No connection
Appendix D BRIM wiring chart
193). You can connect up to four BRI ISDN lines to the
Signal on system side
No connection
No connection
+Tx
+Rx
-Rx
-Tx
No connection
No connection
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RJ-45 pin-out