3Com VCX V7122 User Manual page 29

Table 11
VCX V7122 Rear Panel Cabling (16 Trunks, Dual AC Power) Component Descriptions
Item # Label
1
ETHERNET
2
3 TRUNKS
4
5 100-240~1.5A
Figure 9 VCX V7122 Rear Panel Cabling (8 Trunks, DC Power)
2
1
Table 12
VCX V7122 Rear Panel Cabling (8 Trunks, DC Power) Component Descriptions
Item # Label
1
2 ETH
3 PSTN
4
5 48V 4A max
CAUTION Electrical Grounding: The unit must be permanently connected to
ground via the screw provided at the back on the unit. Use 14-16 AWG wire and a
proper ring terminal for the grounding.
To cable the VCX V7122, follow these steps:
1 Permanently connect the device to a suitable ground with the protective grounding screw
on the rear connector panel, using 14-16 AWG wire.
2 Connect the E1/T1 trunk interfaces (see
3Com VCX V7122 SIP VoIP Gateway User Manual
Component Description
RTM locking screws.
Two Category 5 network cables, connected to the 2 Ethernet RJ-45
ports.
Two 50-pin Telco connector cables, each supporting 8 trunks.
Protective grounding screw.
Dual AC power cables.
3
3
Component Description
RTM latches.
A Category 5 network cable, connected to the Ethernet 1 RJ-45 port.
8 RJ-48c ports, each supporting a trunk.
Protective grounding screw.
2-pin connector for DC.
Connecting the E1/T1 Trunk Interfaces
1 4
below).
5
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