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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
Environmental Requirements
Proper operation of the MGX 8880 Media Gateway depends on a proper environment. This section
describes environmental requirements for the site where you intend to install the media gateway.
The following sections are included:
• Seismic Anchoring, page 3-56
• Shock, page 3-56
• Vibration, page 3-57
• Space, page 3-57
• Temperature, Altitude, and Humidity, page 3-60
• Ventilation, page 3-60
Seismic Anchoring
In order for you to secure a Cisco-supplied cabinet, the holes in the upper and lower corners
accommodate 3/8-inch or 1/2-inch bolts. Also, you can buy an optional stability plate with the Cisco
cabinet. The stability plate is bolted to the floor, and then the Cisco cabinet is bolted to the stability plate.
See Chapter 5, “Installing the Cisco MGX Switch or Gateway” for stability plate installation
instructions.
Shock
For nonoperating mechanical shock and for equipment weighing more than 100 pounds, the peak
acceleration will be from 20 to 25 G.
For operating mechanical shock, the minimum velocity change is 0.66 meters per second with an
effective free fall drop height of 13 mm for Mechanical Design Validation Test (MDVT) and an effective
free fall drop height of 25 mm for Network Equipment Building Standards (NEBS) with no velocity
change specified.
Power input voltage
• AC source: Requires 220 VAC. Normal operating range is 200 to
240 VAC, 47 to 63 Hz. The maximum voltage range is 180 to
254 VAC.
Note The AC power source must be within 6 feet (1.8 meters) of the
system and easily accessible.
• DC source: –42 to –56 VDC.
AC system current requirements Configuration-dependent: Use Table 3-27 for exact requirements. For
general planning purposes: 14.4 A at a nominal voltage of 200 VAC. At the
minimum voltage limit of 180 VAC, the current draw is a maximum of 16
A.
DC system current requirements Configuration-dependent: Use Table 3-27 for exact requirements. For
general planning purposes: 50 A at nominal –48 VDC; 57.1 A at –42 VDC
maximum.
Table 3-22 Space, Weight, and Power Specifications for the MGX 8880 Media Gateway (continued)
Specification Description