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Figure 2-3: MG 3200 Front View with 19-inch Rack Mount Brackets
When installing the chassis in a rack, be sure to implement the following safety
instructions recommended by Underwriters Laboratories:
•
Elevated Operating Ambient - If installed in a closed or multi-unit rack assembly,
the operating ambient temperature of the rack environment may be greater than room
ambient. Therefore, consideration should be given to installing the equipment in an
environment compatible with the maximum ambient temperature (Tma) specified by
the manufacturer.
•
Reduced Air Flow - Installation of the equipment in a rack should be such that the
amount of air flow required for safe operation on the equipment is not compromised.
•
Mechanical Loading - Mounting of the equipment in the rack should be such that a
hazardous condition is not achieved due to uneven mechanical loading.
•
Circuit Overloading - Consideration should be given to the connection of the
equipment to the supply circuit and the effect that overloading of the circuits might
have on overcurrent protection and supply wiring. Appropri-ate consideration of
equipment nameplate ratings should be used when addressing this concern.
•
Reliable Earthing - Reliable earthing of rack-mounted equipment should be
maintained. Particular attention should be given to supply connections other than
direct connections to the branch circuit (e.g., use of power strips.)
To attach the device to a 19-inch rack, take these 2 steps:
1.
Position the device in your 19-inch rack and align the left-hand and right-hand bracket holes
to holes (of your choosing) in the vertical tracks of the 19-inch rack.
2.
Use standard 19-inch rack bolts (not provided) to fasten the device to the frame of the rack.
Nortel recommends using two additional (not supplied) rear mounting brackets to provide added
support.
Note:
•
•
To place the device on a 19-inch rack's shelf, take these 2 steps:
1.
Place the device on the preinstalled shelf.
2.
You're now recommended to take the optional steps of fastening the device to the frame of
the rack (as described above) while it is placed on the shelf, so preventing it from sliding
when inserting cables into connectors on the rear panel.
H.248/SIP
Rack Mount Safety Instructions (UL)
Users assembling the rear brackets by themselves should note the following:
The distance between the screws on each bracket is 26.5 mm.
To attach the brackets, use 4-40 screws with a maximal box penetration length of
3.5 mm.
14
Media Gateway 3200
Document #: LTRT-73805
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