3Com V6100, User Manual Manual, Page: 54 / 496

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V6100 and V7122 User Guide
Figure 19 V7122 Rear Panel Cabling (8 Trunks, DC Power))
Table 22
V7122 Rear Panel Cabling (8 Trunks, DC Power) Component Descriptions
Item # Label Component Description
1 RTM latches.
2 ETH A Category 5 network cable, connected to the Ethernet 1 RJ-45 port.
3 PSTN 8 RJ-48c ports, each supporting a trunk.
4 Protective earthing screw.
5 48V 4A max 2-pin connector for DC.
CAUTION:
The unit must be permanently connected to earth via the screw provided at the
back on the unit. Use 14-16 AWG wire and a proper ring terminal for the earthing.
To cable the V7122:
1 Permanently connect the device to a suitable earth with the protective earthing screw on
the rear connector panel, using 14-16 AWG wire.
2
Connect the E1/T1 trunk interfaces (see Connecting the E1/T1 Trunk Interfaces ).
3
Install the Ethernet connection (see Installing the Ethernet Connection ).
4
Optionally, connect the V7122 RS-232 port to your PC (see Connecting the RS-232 Port
to Your PC ).
5
Connect the power supply (see Connecting the Power Supply ).
1 2 3 3 1 4 5