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Specifications

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Avaya G700 Media Gateway
Issue 6 February 2007 165
Thermal protection
Thermal protection shuts down the power supply if the internal temperature exceeds the
maximum rated safe operating temperature. The minimum thermal shutdown point is at an
ambient temperature of 122 °F (50° C) at 10,000 feet (3,048 meters) elevation or 140 °F (60° C)
at sea level. These temperature minimums are constant under all input and load conditions. You
must consider the effects of component tolerances when you define the shutdown point. This
consideration ensures that the supply does not shut down at ambient temperatures that are less
than those previously specified. This ambient temperature is measured with a forced air flow
from input to output at a nominal rate of 46 cubic feet (1.3 cubic meters) per minute (CFM) or
300 linear feet (91.4 linear meters) per minute (LFM).
Manual reset
The power supply requires a manual reset after the power supply shuts down because of over
voltage or overheating. To reset the power supply, recycle the AC input power.
AC and load center circuit breakers
For AC power, each of the G700 Media Gateways has a detachable AC power cord. This cord
plugs into a wall socket or into a power strip on the rack. A circuit breaker for the panel that
serves the outlet protects this circuit.
As a result, the G700 Media Gateway itself does not have circuit breakers or on/off switches.
However, any customer AC load center must have circuit breakers that protect the power feeds
to the G700 Media Gateways as required by electrical codes.
AC power distribution
AC power distribution is plugged into an outlet or a power strip and can be backed up by an
optional uninterruptible power supply (UPS).
AC grounding
The G700 Media Gateway contains a grounding screw on the back of the chassis. You must
maintain ground connection whether you connect the G700 Media Gateway directly to the
branch circuit or to a power distribution strip. The G700 Media Gateway also requires a cabinet
ground connection directly to an approved ground.