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Rack-Mounting the System
Ensuring Proper Airflow
Stabilizing the System
Cisco VG248 Analog Phone Gateway Hardware Installation Guide
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Install the system in an open rack whenever possible. If installation in an
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enclosed rack is unavoidable, ensure that the rack has adequate ventilation.
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Maintain ambient airflow to ensure normal operation. If the airflow is
blocked or restricted, or if the intake air is too warm, the gateway can
overheat.
Allow at least six (6) inches (15.24 cm) of clearance around the ventilation
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openings of the chassis.
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Avoid placing the system in an overly congested rack or directly next to
another equipment rack. Heat exhaust from other equipment can enter the
inlet air vents and cause the gateway to overheat.
Equipment near the bottom of a rack might generate excessive heat that is
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drawn upward and into the intake ports of the equipment above. The warm air
can cause the gateway to overheat.
Ensure that cables from other equipment do not obstruct the airflow through
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the chassis or impair access to the power supplies or cards. Route cables away
from field-replaceable components to avoid disconnecting cables
unnecessarily for equipment maintenance or upgrades.
Install any stabilizers that came with your equipment rack before mounting
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or servicing the system.
Load the rack from the bottom to the top, with the heaviest system at the
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bottom.
Do not stack the system on top of any other equipment. If the system falls, it
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can cause severe bodily injury and damage the equipment.
If you are using an equipment shelf, ensure that the shelf is constructed to
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support the weight and dimensions of the chassis.
If you are using a telco rack, ensure that the weight of the chassis does not
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make the rack unstable. Secure the telco rack with ceiling brackets if the rack
is populated with heavy equipment.
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Bolt the rack to the floor for stability.
Chapter 2
Preparing to Install the VG248
78-13154-01
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