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316 Telephony Hardware Selection and Settings
P0993133 03
An example for North America:
• If you require 12 digital extensions, you need one DSM 16/DSM 16+
• If you require 24 digital extensions, you need one DSM 32/DSM 32+
3 This procedure is complete.
Upgrade from an existing Norstar system
A special media bay module allows you to convert existing Norstar expansion modules from the
Norstar ICS to full Business Communications Manager capability.
The FEM allows you to connect a maximum of six Norstar expansion modules to a Business
Communications Manager. Each expansion module connection requires one DS30 channel,
therefore, the Business Communications Manager used for this purpose can only support one FEM
module if you are converting a fully-configured Norstar system.
Determine system capacity
After you have selected the modules you require, you must ensure that the Business
Communications Manager can support all the modules. This is determined by the line
requirements of each module.
Cordless handsets
(DECT)
(selected profiles
only)
DECT 32 ______ DECT
Digital extensions are digital or IP telephones. You do not need to include IP telephones when calculating
the number of required DSM modules. For a list of the telephones that can be used with the Business
Communications Manager system, refer to “Telephones and adapters” on page 85.
Analog extensions include single line telephones, fax machines, and modems.
Note: If you require only a few analog extensions, you can use an Business
Communications Manager ATA 2 to connect these devices to your DSM 16, DSM 32 or
the DSM connector on a 4X16 module. Each analog extension requires a Business
Communications Manager ATA 2.
Tip: The BCM400 can hold a maximum of four media bay modules. If you require more,
you also need an Business Communications Manager expansion unit.
Table 49 Station media bay modules required
Type of extension
Number of
extensions
Type of media bay
module
Number of
extensions
per module
Number of
modules required