Nortel Networks BCM50 manual Brim faceplate, Station MBMs Sheet 1

42Chapter 2 Introducing the BCM50 hardware

Figure 8 BRIM faceplate

Global Analog Trunk Module

The Global Analog Trunk Module (GATM) provides an interface for four or eight analog public switched telephone network lines. This module supports both pulse and tone dialing, as well as Caller ID and Disconnect Supervision in selected markets throughout the world.

The GATM uses an RJ-21 connector as the trunk interface. Figure 9 shows the GATM faceplate LEDs and RJ-21 connector. The module is available either in four-port (GATM4) or eight-port (GATM8) configurations.

Figure 9 GATM faceplate

Station media bay modules

Station media bay modules connect telephones and analog telecommunication devices to the BCM50 system.

Table 4 lists the available station media bay modules.

Table 4 Station MBMs (Sheet 1 of 2)

Module type	What it does	Special Notes
DSM16+	Connects a maximum of 16 digital	Refer to “System region
“Digital station media bay module”	telephones to the BCM50 system.	attributes” on page 229 for
		supported regions.
DSM32+	Connects a maximum of 32 digital
“Digital station media bay module”	telephones to the BCM50 system.
4x16	Connects a maximum of four analog	North America only.
Combination of a CTM4 and a DSM16	public switched telephone lines to the	Refer to “System region
	BCM50 system.
“4x16 media bay module”		attributes” on page 229 for
	Also connects a maximum of 16 digital	supported regions.
	telephones to the BCM50 system.

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