User's Manual

Appendix A DTM wiring chart 335
BCM200/400 4.0 Installation and Maintenance Guide
Appendix A
DTM wiring chart
The digital telephone line is connected to the digital trunk module (DTM) through the RJ-48C jack
on the front of the media bay module (MBM) (see Figure 189).
Figure 189 DTM RJ-48C port
Table 85 lists the wiring details for the RJ-48C port.
Table 85 DTM RJ-48C port wiring
Pin Signal
1 Receive Ring
2 Receive Tip
3 Receive Shield
4 Transmit Ring
5 Transmit Tip
6 Transmit Shield
7 No connection
8 No connection
1 2 3 4 5 6 7 8
RJ-48C jack
RJ-48C pin-out
DTM
Bantam jack