Appendix I; Dsm16 And Dsm32 Wiring Charts - Nortel BCM50 Installation And Maintenance Manual

Appendix I

DSM16 and DSM32 wiring charts

Digital telephones, such as the Business Series Telephones, are connected to the Digital Station
Module (DSM16 or DSM32) through the RJ-21 connectors on the front of the media bay module.
The DSM16 has a single RJ-21 connector and the DSM32 has two RJ-21 connectors (see
87).
Figure 87 DSM16 and DSM32 RJ-21 connectors
RJ-21 connector
Table 48 lists the wiring details for the RJ-21 connectors on the DSM16 and DSM32.
Table 48 DSM16 and DSM32 RJ-21 connector wiring (Sheet 1 of 2)
Set Pin Connection
26 Tip
1
1 Ring
27 Tip
2
2 Ring
28 Tip
3
3 Ring
29 Tip
4
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 I 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
BCM50 Installation and Maintenance Guide
DSM32
RJ-21 connectors
DSM16 or
Lower DSM32 Upper DSM32
RJ-21
269
270
271
272
225
Figure
RJ-21
285
286
287
288