Installing The Ethernet Connection - 3Com V7122 Installation Manual

E1/T1 Connections on each 50-pin Telco Connector
Table 5
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
To connect E1/T1 trunk using RJ-48c connectors, follow these 2 steps:
Connect the E1/T1 trunk cables to the ports labeled Trunks 1 to 8 (in the case of the 8-
1
trunk device) on the V7122 RTM.
Connect the other ends of the Trunk cables to the PBX/PSTN switch.
2
RJ-48c trunk connectors are wired according to
Pinout of RJ-48c Trunk Connectors
Figure 7
RJ-48c Connector and Pinout
1 2 3 4 5 6 7 8
1 = Rx Ring
2 = Rx Tip
4 = Tx Ring
5 = Tx Tip

Installing the Ethernet Connection

Connect a standard Category 5 network cable to the Ethernet RJ-45 port (and the other as
optional redundancy/backup). Connect the other end of the Category 5 network cables to
your IP network. The Ethernet connectors (labeled Ethernet 1 and Ethernet 2) are wired
according to Figure 8.
When you assign an IP address to the V7122 gateway using HTTP (under
Assigning an IP Address Using
cable it differently.
18
Tx Pins (Tip/Ring)
27/2
29/4
31/6
33/8
35/10
37/12
39/14
41/16
Figure
3, 6, 7, 8
not connected
body = shield
HTTP), you may be required to disconnect this cable and re-
Rx Pins (Tip/Ring)
26/1
28/3
30/5
32/7
34/9
36/11
38/13
40/15
7.
Step 1
V7122 Digital Gateway Installation Guide
in Section