3Com V7111 - Manual (Page 24)

Table 8 Pin Allocation in the 50-pin Telco Connector
Phone Channel Connector Pins Phone Channel Connector Pins
1 1/26 13 13/38
2 2/27 14 14/39
3 3/28 15 15/40
4 4/29 16 16/41
5 5/30 17 17/42
6 6/31 18 18/43
7 7/32 19 19/44
8 8/33 20 20/45
9 9/34 21 21/46
10 10/35 22 22/47
11 11/36 23 23/48
12 12/37 24 24/49
Figure 16 V7111 24-PORT RS-232 Cable Wiring
2
3
5 2
3
5 RD
TD
GND
DB-9 female for PC DB-9 male for MP-100 DB-9 male for V7111 24-
PORT
DB-9 female for PC
24 3Com VCX V7111 Analog Gateway Installation Guide