Connecting The E1/T1 Trunk Interfaces - 3Com VCX V7122 User Manual

3
Install the Ethernet connection (see
4 Connect the power supply (see

Connecting the E1/T1 Trunk Interfaces

Connect the VCX V7122 E1/T1 Trunk Interfaces using either Telco or RJ-48 connectors:
With 50-pin Telco connectors (16-trunk device), follow these steps:
1
Attach the Trunk cable with a 50-pin male Telco connector to the 50-pin female Telco
connector labeled "Trunks 1 8" on the Rear Transition Module (RTM).
2 Connect the other end of the Trunk cable to the PBX/PSTN switch.
3
Repeat steps 1 and 2 for the other Trunk cable but this time connect it to the connector
labeled "Trunks 9 16".
The 50-pin male Telco cable connector must be wired according to the pinout in
below, and to mate with the female connector illustrated in
Figure 10
50-pin Female Telco Board-Mounted Connector
Table 13
E1/T1 Connections on each 50-pin Telco Connector
E1/T1 Number
1 to 8 9 to 16
1 9
2 10
3 11
4 12
5 13
6 14
7 15
8 16
With RJ-48c Connectors, follow these steps:
1 Connect the E1/T1 trunk cables to the ports labeled "Trunks 1 to 8" (in the case of the 8-
trunk device) on the VCX V7122 RTM.
2
Connect the other ends of the Trunk cables to the PBX/PSTN switch.
RJ-48c trunk connectors are wired according to
30
Installing the Ethernet Connection
Connecting the Power Supply
Pin Numbers
25
50
Tx Pins (Tip/Ring)
27/2
29/4
31/6
33/8
35/10
37/12
39/14
41/16
Figure 11
3Com VCX V7122 SIP VoIP Gateway User Manual
on page 31).
on page 31).
Table 13
Figure 10.
1
26
Rx Pins (Tip/Ring)
26/1
28/3
30/5
32/7
34/9
36/11
38/13
40/15
below.