Depending on the power source you want to connect, see:
• Connecting the Chassis to an AC Power Source, on page 14
• Connecting the Chassis to a +12V DC Power Supply, on page 15
Connecting the Chassis to an AC Power Source
Before you begin
AC connected units must have a permanent ground connection in addition to the power cable ground wire.
Warning
Design your installation to use either AC or DC power source. Do not use AC and DC power at the same
time. If you do, the unit stops operating, and you must reboot it with only a single power source.
Caution
If you suspect that your AC power is not clean—if lights flicker often or there is machinery with large motors
nearby—have a qualified person test the power. Install a power conditioner if necessary.
Note
The Cisco VG310 or Cisco VG320 voice gateway with AC power supply autoselects either 100–127 volt or
200–240 volt operation. AC versions include a 6-foot (1.8-meter) electrical power cord. A label near the power
cord indicates the correct voltage, frequency, current draw, and power dissipation.
Follow these guidelines before you connect the chassis to an AC power source:
• While being connected to an AC power source, do not connect the chassis to the DC power supply as an
arrangement for backup power in the event of AC power failures.
• To ensure uninterrupted power, connect the chassis to an uninterruptible power supply (UPS). For more
information on connecting a UPS to the chassis, see Connecting a UPS to an AC-Powered Voice Gateway,
on page 15.
To connect the chassis to an AC power source:
Procedure
Step 1 Connect the AC power cable (supplied) to the recessed power plug on the rear of the concentrator.
Step 2 Plug the cable into an AC power source with a voltage of 100 VAC to 240 VAC.
Installing the Cisco VG310 and Cisco VG320 Voice Gateways
14
Installing the Cisco VG310 and Cisco VG320 Voice Gateways
Connecting the Chassis to an AC Power Source
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