Serial Port 2 Status Setup (JP4 & J2)
RS-232*
12
9
JP4
6
3
1
J2
3
5
* default
Serial Port 3 Ring Status Setup (JP6)
1
3
5
* default
Quick Installation Guide
RS-422
12
10
9
7
4
6
3
1
2
1
4
3
6
5
+12V
2
1
4
3
6
5
RS-485
10 12
7 9
4 6
3
1
1
2
3
4
5
6
+5V
Ring*
1
2
3
4
5
6
PCM-6892 Installation Guide
10
7
4
1
2
4
6
2
4
6
15