Nortel Networks 400 4.0, BCM200 manual Base function tray internal components

40Chapter 2 Introducing the BCM hardware

Table 5 Base function tray faceplate component descriptions

Component	Description
System status LEDs	The system status display LEDs indicate the current status of the hardware
	components (see “Base function tray system status display LEDs” on page 77).
Reset button	The reset button restarts the BCM system.
WAN card	The WAN card (field upgrade) connects the BCM system to the wide area network
	(WAN). See “WAN interface card” on page 46.
Media services card (MSC)	The MSC performs call processing and media processing of the voice channels for
	the BCM system. See “Media services card (MSC)” on page 41.
USB (universal serial bus)	The two USB ports connect USB-compatible peripherals to the BCM system.
port
Modem port	The modem port provides PSTN dial-up access to the BCM system.
COM port (or serial port)	The COM port provides a serial connection to a laptop for maintenance purposes.
	See “Connecting through the serial port” on page 179.
Ethernet port 2	Ethernet port 2 provides access to the internal local area network.
Ethernet port 1	Ethernet port 1 provides access to the external local area network.

Base function tray internal components

The base function tray installs in the main unit and houses the main card with the system interfaces.

Figure 9 illustrates the base function tray layout (BCM200 configuration shown). Table 6 describes the internal components.

Figure 9 Base function tray internal components

DS256 interface
	MSC mounting
	screws
System status LEDs	PEC III
MSC	slots
N0060612