Nortel Networks BCM50 - Manual (Page 225)

Appendix J 4x16 wiring charts 225
Installation and Maintenance Guide
Appendix J
4x16 wiring charts
You can connect up to 4 analog telephone lines and up to 16 digital telephones to the 4x16 media
bay module (MBM).
The analog telephones lines connect to the 4x16 through the RJ-11 jacks (labeled 1 to 4) on the
front of the MBM. Do not connect analog telephone lines to the auxiliary jack on the front of the
media bay module. These jacks are intended for analog telephones designated as emergency
telephones. See the figure
4x16 connectors on page 225.
The digital telephones, such as the Business Series Telephones, connect to the RJ-21 connector on
the front of the 4x16.
Figure 96 4x16 connectors
The table 4x16 RJ-11 port wiring on page 225 and the table 4x16 default line numbering on page
226 list the wiring details for the RJ-11 jacks on the 4x16. This wiring applies to the numbered
ports and the Aux ports.
Table 48 4x16 RJ-11 port wiring (Sheet 1 of 2)
Pin Signal
1 No connection
2 No connection
3 Ring
4 Tip
RJ-21 pin out
RJ-21 connector
4x16
6 5 4 3 2 1
RJ-11 pin out
RJ-11 jacks