Choosing The Assigned Order For Modules - Nortel BCM1000 Installation And Maintenance Manual

86 Chapter 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
• 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
• 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
• Not all modules are available to all systems. Refer to
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
Station modules are assigned starting with DS30 02. This allows telephones to start numbering
from the system Start DN (Default: 221).
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.
N0008587 01
on page 104.
4X16 switch settings on page 99.
CTM/GATM switch settings on page 95.
Chapter 2, "Telephony hardware," on
Figure 37.