DSM16 - Wiring Chart

On the UCx Digital Station Module (DSM16), you can connect 16 Nortel digital telephones to the RJ-21 telephony connector on the system.

The following table provides information about the wiring of the RJ-21 telephony connector:

Pair

Pins (Tip/Ring)

Wire colors (Tip/Ring)

Device type

Port

1

26 / 1

White-Blue / Blue-White

Digital phone

1

2

27 / 2

White-Orange / Orange-White

Digital phone

2

3

28 / 3

White-Green / Green-White

Digital phone

3

4

29 / 4

White-Blue / Blue-White

Digital phone

4

5

30 / 5

White-Slate / Slate-White

Digital phone

5

6

31 / 6

Red-Blue / Blue-Red

Digital phone

6

7

32 / 7

Red-Orange / Orange-Red

Digital phone

7

8

33 / 8

Red-Green / Green-Red

Digital phone

8

9

34 / 9

Red-Brown / Brown-Red

Digital phone

 9

10

35 / 10

Red-Slate / Slate-Red

Digital phone

 10

11

36 / 11

Black-Blue / Blue-Black

Digital phone

 11

12

37 / 12

Black-Orange / Orange-Black

Digital phone

 12

13

38 / 13

Black-Green / Green-Black

Digital phone

 13

14

39 / 14

Black-Brown / Brown-Black

Digital phone

14

15

40 / 15

Black-Slate / Slate-Black

Digital phone

15

16

41 / 16

Yellow-Blue / Blue-Yellow

Digital phone

16

17

42 / 17

Yellow-Orange / Orange-Yellow

 

 

18

43 / 18

Yellow-Green / Green-Yellow

 

 

19

44 / 19

Yellow-Brown / Brown-Yellow

 

 

20

45 / 20

Yellow-Slate / Slate-Yellow

 

 

21

46 / 21

Violet-Blue / Blue-Violet

 

 

22

47 / 22

Violet-Orange / Orange-Violet

 

 

23

48 / 23

Violet-Green / Green-Violet

 

 

24

49 / 24

Violet-Brown / Brown-Violet

 

 

25

50 / 25

Violet-Slate / Slate-Violet

 

 

 

Note that the pin-out for the RJ-21 connector follows traditional telephony wiring standards, and is consistent with the pin-out used in Nortel BCM Media Bay Modules (DSM16, DSM32) as well as Norstar Station Modules and can be used with RJ-11 breakout panels such as the Allen Tel AT125-SM Bridging Adapter. 
The Wiring-Field Card (WFC) that is used with the DGHb and DGS is not compatible with the DSM16.