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Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter3 Preparing for Installation
Site Requirements for the MGX 8880 Media Gateway
Vibration
Table 3 -23 describes the Cisco recommendations for vibration conditions.
Space
You can install the following MGX 8880 Media Gateway components in a rack (as shown in
Figure 3-11):
•Exhaust plenum
•Upper fan tray
•MGX 8880 Media Gateway
•Lower fan tray
Table3-23 Vibration Condition Recommendations
Category NEBS Description MDVT Description
Earthquake •No damage to the switch when tested to earthquake
waveform.
•75-mm maximum single amplitude deflection.
•Frame-level natural mechanical resonant frequency > 2
Hz.
•Frame-level natural mechanical resonant frequency > 6
Hz.
•Product must function before and after vibration is
applied to each axis (x = side to side, y = front to back,
z = up and down).
•Product must operate without loss of service during
earthquake testing.
•None
Office •3 axis swept-sine.
•5 Hz to 100 Hz to 5 Hz.
•0.1 G, 0.1 octaves/min.
•0.41 Grms, 3 to 500 Hz
•Spectral break points of
0.0005 G1/Hz at 10 Hz and 200 Hz
•5 dB/octave roll-off at each end
•2 hrs per axis of operation
1. Office product—More than 2 m from regularly inhabited positions
Transportation •For rail, truck, ship, 5 to 100 Hz, 0.1octave/min, 0.5 G.
•For rail, truck, ship, jet, reciprocating or turbo prop
aircraft, 100 to 500 Hz, 0.25 octave/min, 1.5 G.
• 3 to 300 Hz, 0.5 G2
•30 min per axis2
2. Cisco package test specification
Non-Operational •None. •1.12 Grms, 3 to 500 Hz
•Spectral break points of
0.0065 G1/Hz at 10 Hz and 100 Hz
•5 dB/octave roll-off at each end
•30 minutes in each of 3 axes