PBXgateway II Quick Installation Guide
18
Telephony Wiring
Once the PBXgateway II is mounted, the individual phone ports must be wired to the PBX using a 50-pin,
RJ-21 cable. Each wire pair consists of two pins and is color-coded as detailed in the chart below.
Table 2:
Pin Assignments (25-Pair Cable)
50-Pin Connector Description
Pair Pins
Color
Port
1
01/26
BL/WH : WH/BL
1
2
02/27
OR/WH : WH/OR
2
3
03/28
GN/WH : WH/GN
3
4
04/29
BR/WH : WH/BR
4
5
05/30
SL/WH : WH/SL
5
6
06/31
BL/RD : RD/BL
6
7
07/32
OR/RD : RD/OR
7
8
08/33
GN/RD : RD/GV
8
9
09/34
BR/RD : RD/BR
9
10
10/35
SL/RD : RD/SL
10
11 11/36
BL/BK
:
BK/BL
11
12
12/37
OR/BK : BK/OR
12
13
13/38
GN/BK : BK/GN
13
14
14/39
BR/BK : BK/BR
14
15 15/40
SL/BK
:
BK/SL
15
16
16/41
BL/YL : YL/BL
16
17
17/42
OR/YL : YL/OR
17
18
18/43
GN/YL : YL/GN
18
19
19/44
BR/YL : YL/BR
19
20
20/45
SL/YL : YL/SL
20
21
21/46
BL/VI : VI/BL
21
22
22/47
OR/VI : VI/OR
22
23
23/48
GN/VI : VI/GN
23
24
24/49
BR/VI : VI/BR
24
Ground 25/50
SL/VI : VI/SL
Ground
Wire Color Abbreviations:
BK=Black, BR=Brown, RD=Red, OR=Orange, YL=Yellow, GN=Green, BL=Blue, VI=Violet, WH=White,
SL=Slate
