Nortel Networks BCM1000 manual Choosing the assigned order for modules

84Chapter 7 Setting media bay module DIP switches

DSM32 module, because the second level of DSM lines would not be accessible. The same applies to assigning a DSM32 to DSM30 06 if your system is set to a 3/5 DSM30 split. Refer to DSM switch settings on page 101.

•The DIP switches on the 4X16 module are used to set the DS30 bus number and offset for the CTM part of the module. The module automatically assigns an additional DS30 bus for the 16 DSM lines. However, you cannot choose DS30 07 for the 4X16 module, because the DSM lines would not be accessible. The same applies to DS30 06 if your system is set to a 3/5 DS30 split. Refer to 4X16 switch settings on page 97.

•Companion: configure the DSM or DSMs handling Business Communications Manager Companion to DS30 06 or 07. You must change the module number of any trunk media bay modules configured to DS30 06 or 07 to an unassigned module number to prevent conflicts with Companion.

Note: Companion DS30 split restrictions:

If you choose a 3/5 DS30 split for your system, the second module cannot be assigned. Therefore, you can add a maximum of 16 Companion base stations, which support a maximum of 30 handsets. This means you can only use a DSM on DS30 06. You cannot assign a DSM 32.

•The CTM8 module uses two offsets on a DS30 bus. You assign the first offset to the module, and the second offset is automatically selected. This means that you can choose offset pairs

0-1, 1-2, or 2-3. Because the module requires two offsets on the same DS30 bus, you cannot select offset 3. Refer to CTM/GATM switch settings on page 93.

•Not all modules are available to all systems. Refer to Chapter 2, “Telephony hardware,” on page 33 for specifics about each module.

Note: Remember, if you have chosen a 3/5 DS30 split for your system, DS30 07 is no longer available for media bay modules.

Choosing the assigned order for modules

Assign the media bay modules and DS30 bus numbers in the order shown in Figure 37.

Station modules are assigned starting with DS30 02. This allows telephones to start numbering from the system Start DN (Default: 221). The exception to this is a DSM used for Companion, which must be installed on DS30 06 (DSM32) or DS30 06 and 07 (two DSM 16s or one DSM32). If your system is set to a 3/5 DS30 split, you can only assign a DSM16 to DS30 06 for Companion.

Trunk modules are assigned starting at DS30 07, in a system with a 2/6 DS30 split, and at DS30 06 in a system with a 3/5 DS30 split. The exception to this is the 4X16 module, which requires two DS30 blocks, so it must be set to a DS30 bus that has the next bus open.

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