Nortel Networks BCM1000 Appendix B Media bay module combinations, Combining CTMs/GATMs and 4X16s

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Appendix B

Media bay module combinations

This section describes some combinations of trunk and station modules to demonstrate how to fit the modules into the DS30 bus resources. These configurations are meant to help demonstrate how your system can be configured using the information in this guide and do not necessarily reflect real-life configurations.

Combining CTMs/GATMs and 4X16s

The 4X16 combination media bay module is a combination of a CTM or GATM and a DSM. A maximum of four CTMs/GATMs can fit into a DS30 bus, when each is given a different offset. Therefore, you can combine a maximum of three GATMs with a 4X16 combination module. This configuration would occupy two full DS30 bus blocks.

Which means, you can install a maximum of three of these combinations in a Business Communications Manager box with an extension box added to it. Table 1 demonstrates this configuration of CTMs/GATMs and 4X16 modules, including the switch settings for each module.

Table 1 CTMs/GATMs combined with 4X16 modules

		Each heavily-outlined and shaded square represents one
			module.			Switch setting
	2		4	1
DS30		4x16s	CTMs/GATM4s	CTM8/GATM8
bus #		Offset 3	Offset 0, 1 and 2	Offset 2	1	2	3	4	5	6
2			0	CTM/GATM 4settings:	on on on on on					on
			1	CTM/GATM4 settings:	on	on	off	on	on	on
			2	CTM/GATM4 settings:	on	off	on	on	on	on
	3		Switch settings for 4X16:		on	off	off	on	on	on
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4		0	CTM/GATM4 settings:	on	on	on	on	off	on
			2	on	on	off	on	off	on
			(CTM8/GATM8)	on	off	on	on	off	on
	3	Switch settings for 4X16:		on	off	off	on	off	on
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