3Com V7122 User Manual page 48

With RJ-48c Connectors:
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 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 14
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 15.
When assigning an IP address to the gateway using HTTP (under
Address Using HTTP), you may be required to disconnect this cable and re-cable it
differently.
Pinout of RJ-45 Connectors
Figure 15
RJ-45 LAN Connector and Pinout
1 2 3 4 5 6 7 8
1 = Tx+
2 = Tx-
3 = Rx+
6 = Rx-
For redundant operation it is recommended to connect each of the Ethernet
connectors to a different switch.
Connecting the RS-232 Port to Your PC
Using a standard RS-232 straight cable (not a cross-over cable) with DB-9 connectors,
connect the RS-232 port to either COM1 or COM2 RS-232 communication port on your PC.
The required connector pinout and gender are shown in
For information on establishing a serial communications link with the gateway, see
Establishing a Serial Communications Link with the
48
Figure 14.
3, 6, 7, 8
not connected
body = shield
4, 5, 7, 8
not connected
S tep 1 in
7
Figure 16.
V7122.
V7122 GatewayUser Guide
Assigning an IP