Nortel Networks 400 4.0, BCM200 manual BCM400 main unit component descriptions

34Chapter 2 Introducing the BCM hardware

BCM400 main unit

The BCM400 main unit is available either in a standard or redundant feature option (RFO) configuration.

Figure 3 illustrates the BCM400 main unit, and Table 3 describes the main unit components. These components are the same for the standard and RFO configurations.

Figure 3 BCM400 main unit components

Advanced function tray

Tray latch

Tray latch

Primary Mirror	Alarm Reset
	Status

MBM bays

Base function trayMBM ejector

Table 3 BCM400 main unit component descriptions

Component	Description
Base function tray	The sliding base function tray provides call processing functions and interface
	connections. See “Base function tray component hardware” on page 39.
Advanced function tray	The sliding advanced function tray contains a hard disk and a bay for future use. See
	“BCM400 advanced function tray” on page 37.
Tray latch	The tray latch enables you to remove the base function tray or the advanced function
	tray.
Media bay module (MBM)	The MBM bay is a slot into which you install an MBM. See “Media bay modules
bay	(MBMs)” on page 51.
MBM ejector	The MBM ejector enables you to remove an MBM from the MBM bay.

Figure 4 shows the BCM400 main unit standard configuration internal components, while Figure 5 shows the BCM400 main unit RFO internal components. Table 4 describes the internal components.

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