Nortel Networks BCM1000 manual Determining module DS30 bus requirements

64 Chapter 4 Selecting the media bay modules for your system

Determining module DS30 bus requirements

Figure 27 shows how much of a DS30 bus each module requires.

Figure 27 DS30 bus space requirements for media bay modules

Trunks (lines)	Stations (extensions/DNs)	Combination and specialized
		media bay modules

1 DS30 bus/	1 DS30 bus/
offset set to 0	offset set to 0, 1, 2, or 3	2 DS30 bus/
	4 ASM8/ASM8+	offset set to 0, 1, 2, or 3
1 DTM
	per DS30
per DS30	bus (FDD bus)
bus	On PDD DS30	4X16
	bus, max. of two	1 offset of
		1 DS30 bus
	modules
		for lines
1 DS30 bus/
	1 DS30 bus/	1 full DS30
offset set to 0, 1, or 2

	3 BRIs	offset set to 0 or 1			bus
			DSM 16+		for telephone
	per DS30		2 per DS30		and equipment
	bus		bus		connections
			(module set to
1 DS30 bus/			double density)	1 DS30 bus/
offset set to 0, 1, 2, or 3		1 DS30 bus/
				offset set to 0
		offset set to 0 1 DSM 16
	4 CTMs/
			per DS30 bus		1 DECT
	GATM4s		1 DSM 16+
					per DS30
	per DS30		per DS30 bus
	bus		(module set to		bus
			single density)		(1 DECT per system)

		1 DSM 32+
1 DS30 bus/		per DS30 bus
		(module set to
offset set to 0, 1, or 2
		double density)	Note: The FEM module requires a
CTM8s/
	2 DS30 bus/		DS30 bus for each port that is active.
GATM8s
	offset set to 0		If all ports are active, no other mod-
max. of
			ules can be added to the system.
2 offsets
		1 DSM 32
per DS30
		per 2 DS30
bus
		bus
		1 DSM 32+
		per 2 DS30
		(module set to
		single density)

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