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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
Chapter 3
Preparing for Installation
Site Requirements for the MGX 8880 Media Gateway
•
Air intake plenum
•
AC power supply tray (optional)
Figure 3-11
MGX 8880 Media Gateway Components
The MGX 8880 Media Gateway and components fit in either a 19-inch (48.26 cm) wide rack or a 23-inch
(58.42 cm) wide rack (with extenders installed).
Plan so that the rack accommodates your needs:
•
The DC Media Gateway is 14 RUs (24.5 in. or 62.23 cm), and three gateways can fit in a seven-foot
rack (see
Table 3-24
).
•
The Media Gateway with the optional AC power tray is 17 RUs (29.75 in. or 75.57 cm) as described
in
Table 3-25
.
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CISCO MGX 8880
Exhaust plenum/
fan tray
3.5 in.
Switch
17.5 in.
Air intake plenum
3.5 in.
AC power tray
(optional)
5.25 in.
2 RU
10 RU
2 RU
3 RU
Table 3-24
MGX 8880 (14 RU) Rack Space Requirements (“Three in a Rack”)
Component
Rack Space
Height
Depth
Exhaust plenum with fan tray
2 RUs
3.50 in. (8.89 cm)
21.5 in. (54.61 cm)
MGX 8880 Media Gateway
10 RUs
17.5 in. (44.45 cm)
21.5 in. (54.61 cm)
Air intake plenum with DC power supply 2 RUs
3.50 in. (8.89 cm)
21.5 in. (54.61 cm)