3Com V7122 User Manual page 47

Connect the E1/T1 trunk interfaces (see
2
Install the Ethernet connection (see
3
Optionally, connect the V7122 RS-232 port to your PC (see
4
to Your PC).
Connect the power supply (see
5
Connecting the E1/T1 Trunk Interfaces
Connect the E1/T1 Trunk Interfaces using either Telco or RJ-48 connectors:
With 50-pin Telco connectors (16-trunk device):
Attach the Trunk cable (of at least 26 AWG UTP) with a 50-pin male Telco connector to
1
the 50-pin female Telco connector labeled 'Trunks 1 8' on the Rear Transition Module.
Connect the other end of the Trunk cable to the PBX/PSTN switch.
2
Repeat Steps 1 and 2 for the other Trunk cable but this time connect it to the connector
3
labeled 'Trunks 9 16'.
The 50-pin male Telco cable connector must be wired according to the pinout in
and to mate with the female connector illustrated in
50-pin Female Telco Board-Mounted Connector
Figure 13
Pin Numbers
25
50
E1/T1 Connections on each 50-pin Telco Connector
Table 17
E1/T1 Number
1 to 8
1
2
3
4
5
6
7
8
V7122 Gateway User Guide
Connecting the E1/T1 Trunk
Installing the Ethernet
Connecting the Power
1
26
9 to 16
9
10
11
12
13
14
15
16
Connection).
Connecting the RS-232 Port
Supply).
Figure 13.
Tx Pins (Tip/Ring)
27/2
29/4
31/6
33/8
35/10
37/12
39/14
41/16
Interfaces).
Table 17,
Rx Pins (Tip/Ring)
26/1
28/3
30/5
32/7
34/9
36/11
38/13
40/15
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