Dsm16 And Dsm32 Wiring Charts - Nortel BCM50 2.0 Installation Manual

Appendix C

DSM16 and DSM32 wiring charts

Digital telephones, such as the Business Series Telephones, are connected to a digital station
module (DSM16 or DSM32) through the RJ-21 connectors on the front of the media bay modules
(MBM). The DSM16 has a single RJ-21 connector and the DSM32 has two RJ-21 connectors (see
Figure 15).
Figure 15 DSM16 and DSM32 RJ-21 connectors
RJ-21 connector
Table 9 lists the wiring details for the RJ-21 connectors on the DSM16 and DSM32.
Table 9 DSM16 and DSM32 RJ-21 connector wiring (Sheet 1 of 2)
Set Pin Connection
1 26 Tip
1 Ring
2 27 Tip
2 Ring
3 28 Tip
3 Ring
4 29 Tip
4 Ring
DSM16
Default DN on Expansion port 1 Default DN on Expansion port 2
Lower DSM32
Wire color
White-Blue
Blue-White
White-Orange
Orange-White
White-Green
Green-White
White-Brown
Brown-White
Appendix C DSM16 and DSM32 wiring charts
RJ-21 pin-out
DSM16 or
Upper DSM32
RJ-21 RJ-21
237 253
238 254
239 255
240 256
DSM32
RJ-21 connectors
DSM16 or
Lower DSM32 Upper DSM32
RJ-21
269
270
271
272
Telephony Device Installation Guide
67
RJ-21
285
286
287
288