Shure Conference Phone - Manual (Page 21)

English
Pin Signal Cable Color Code
1 Audio 1 black
2 Control 2 blue
3 -24 V gray
4 GND brown
5 GND purple
6 GND red/gray
7 GND red
8 +24 V pink
9 Control 3 yellow
10 Control 1 green
11 Mic Bus white
12 Mode red/blue
Pin Signal
1 n.c.
2 TXD
3 RXD
4 n.c.
5 GND
6 n.c.
7 n.c.
8 n.c.
9 n.c.
9
20
9 Appendix A – Connector Pin Assignments
9 1 2
8 10 12 3
7 11 4
6 5
2 3 1 4 5
6 7 8 9
SUB-D 9 RS232
Minicon Bus Cable
Shield connected to connector housing