Statement 1028—
More Than One Power Supply
This unit might have more than one power supply connection. To reduce risk of electric shock, all connections
must be removed to de-energize the unit.
Warning
Statement 1030—
Equipment Installation
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning
Statement 1024—
Ground Conductor
This equipment must be grounded. To reduce the risk of electric shock, never defeat the ground conductor or
operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical
inspection authority or an electrician if you are uncertain that suitable grounding is available.
Warning
Statement 1046—
Installing or Replacing the Unit
To reduce risk of electric shock, when installing or replacing the unit, the ground connection must always be
made first and disconnected last.
Warning
Statement 445—
Connect the Chassis to Earth Ground
To reduce the risk of electric shock, the chassis of this equipment needs to be connected to permanent earth
ground during normal use.
Warning
Statement 338—
Prevent Accidental Discharge
To prevent accidental discharge in the event of a power line cross, route on-premise wiring away from power
cables and off-premise wiring, or use a grounded shield to separate the on-premise wiring from the power
cables and off-premise wiring. A power line cross is an event, such as a lightning strike, that causes a power
surge. Off-premise wiring is designed to withstand power line crosses. On-premise wiring is protected from
power line crosses by a device that provides overcurrent and overvoltage protection. Nevertheless, if the
on-premise wiring is in close proximity to or not shielded from, the off-premise wiring or power cable during
a lightning strike or power surge, the on-premise wiring can carry a dangerous discharge to the attached
interface, equipment, or nearby personnel.
Warning
Installing the Cisco VG420 Voice Gateway
2
Installing the Cisco VG420 Voice Gateway
Prerequisites for the Installation
