Choosing The Assigned Order For Mbms - Nortel BCM200 Installation And Maintenance Manual

Choosing the assigned order for MBMs

Assign the MBMs and DS30 buses in the order shown in
Station MBMs are assigned starting with DS30 2. This allows telephones to start numbering from
the system Start DN (the default is 221).
Trunk MBMs are assigned starting at DS30 7 in a system with a 2/6 DS30 split, and at DS30 6 in a
system with a 3/5 split. The exception to this is the 4x16 and the DDIM, which require two DS30
buses that must be set to a DS30 that has the next bus open.
Figure 69 Assigning single-density MBMs to the DS30 bus hierarchy
After you choose your MBMs, choose where to
assign them on the DS30 buses
DN assignment
DS30
begins with Start DN
buses
(default: 221)
2
Station MBMs are assigned
starting at the top (DS30 2) of
the available MBM DS30
buses.
3
4
Trunk MBMs are assigned
starting with the last
5
available MBM DS30 bus
(DS30 6 or 7, depending on
the bus split in effect).
6
Exception: a 4x16 or a DDIM
cannot be assigned to the
last DS30 bus.
7*
Lines start at 61 on
DS30 7
DSM 16
6
7*
DSM 32
* DS30 7 is not available to any MBM if your system has been
configured with a 3/5 bus split
MBMs that require two DS30 buses, such as the DSM32 and the
4x16, must be assigned to DS30s higher than 6, to accommodate all
the resource requirements.
Chapter 8 Installing a media bay module (MBM)
Figure 69 on page
Example of
North American-
based setup
DSM 32
CTM
CTM
CTM
4x16
DS30 5 supports the
station part of the 4x16
DSM 32
3/5 bus split
BCM200/400 4.0 Installation and Maintenance Guide
115.
Example of a
European- based
setup
DS30
buses
2
DSM 32
3
4
DSM 16
5
BRI
6
BRI
DECT
7*
115