Nortel Networks 400 4.0, BCM200 manual Selecting station MBMs, To select station MBMs

108Chapter 8 Installing a media bay module (MBM)

Selecting station MBMs

The number and type of telephones and related equipment you have determines which station MBMs you require.

Note: If you are adding any extensions in the near future, include them in your calculations.

To select station MBMs

1In Table 26, record the number of each type of extension you have.

2Use the number of extensions and the number of extensions per MBM to determine how many MBMs you need.

Table 26 Determine station MBMs requirements

	Number of		Number of extensions	Number of MBMs
Type of extension	extensions	Type of MBM	per MBM	required
Digital extensions		DSM16/DSM16+	16	_____ DSM16
Digital extensions		DSM32/DSM32+	32	_____ DSM32
Digital extensions		4x16	16	_____ DSM16
Analog extensions		ASM8	8	_____ ASM8
Analog extensions		GASM8	8	_____ GASM8
Specialty modules

Digital extensions are digital or IP telephones. You do not need to include IP telephones when calculating the number of required DSM MBMs. For a list of the telephones that can be used with the BCM system, refer to “Telephones and adapters” on page 72.

Analog extensions include single-line telephones, fax machines, and modems.

For example, in North America:

•If you require 12 digital extensions, you need 1 DSM16/DSM16+

•If you require 24 digital extensions, you need 1 DSM32/DSM32+

Note: If you require only a few analog extensions, you can use an ATA 2 to connect these devices to your DSM16(+), DSM32(+), or the DSM connector on a 4x16 MBM. Each analog extension requires an ATA 2.

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