Nortel BCM50, Руководство по установке и обслуживанию

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Appendix F BRIM wiring chart 215
BCM50 Installation and Maintenance Guide
Appendix F
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
Figure 84 ). You can connect up to four BRI ISDN lines to the
BRIM.
Figure 84 , Table 41 , and Table 42 on page 216 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.
Figure 84 BRIM RJ-45 ports
Table 41 and Table 42 on page 216 list the wiring details for the RJ-45 ports.
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.
Table 41 BRIM RJ-45 port wiring
Pin Signal Signal on system side
1 No connection No connection
2 No connection No connection
3 + Receive (+Rx) +Tx
4 + Transmit (+Tx) +Rx
5 - Transmit (-Tx) -Rx
6 - Receive (-Rx) -Tx
7 No connection No connection
8 No connection No connection
1 2 3 4 5 6 7 8
RJ-45 pin out
RJ-45 jacks
BRIM