C H A P T E R 2

Chassis Description

The Netra CT chassis is designed to be mounted in a 19-inch rack. You can purchase optional adaptors that enable you to mount the chassis in a 21-inch, 23-inch, or 600-mm rack.

This chapter contains the following topics:

Chassis Physical Specifications

Power Distribution Units

Chassis Physical Specifications

The Netra CT chassis is rugged enough to withstand environmental hazards--such as excessive heat, earthquakes, and smoke--to which a server in a telecommunications central office might be subjected. It houses the following Netra CT server components:

Board cages for the rear transition modules

Four power distribution units

TABLE 2-1 gives the physical specifications for the chassis. FIGURE 2-1 shows the chassis from the front.

TABLE 2-1 Netra CT Server Chassis Physical Specifications
	U.S.	Metric
Width	17.5 inches	444.5 mm
Depth:
Default configuration, with rackmount brackets extended as shown in FIGURE 2-1	15.8 inches	400 mm
With rackmount brackets flush against the bottom of the chassis	13.8 inches	350 mm
Height	21 inches	533.6 mm
Weight (empty)	74 lb	33.6 kg
Weight (fully loaded)	150 lb	68 kg

FIGURE 2-1 Physical Specifications of the Netra CT Chassis

Figure showing the physical specifications for the Netra CT chassis. Same specifications are also given in TABLE 2-1.

Power Distribution Units

The power distribution units are located on the chassis and connect directly to the server's midplane when the server is installed in the chassis. Each power distribution unit is a cold-swappable field-replaceable component; however, you must remove the server before you can replace a power distribution unit.

An input power cable is plugged into the power distribution unit, then the power distribution unit provides power to the accompanying power supply unit in the Netra CT server (see FIGURE 2-2).

FIGURE 2-2 Power Distribution Units and Power Supply Units

Figure showing the locations of the power supply units and power distribution units in the Netra CT servers and chassis.