To Determine Bus Requirements - Nortel BCM200 Installation And Maintenance Manual

Figure 68 Space requirements for special MBMs
4x16 module
2 DS30 buses/
offset set to 0, 1, 2, or 3
1 offset of
1 full DS30
for lines
1 full DS30
for telephone
and equipment
connections
1/2 DS30 for
the stations

To determine bus requirements

1
Make a list of MBMs and the space requirements for each MBM you chose. Refer to the
following table.
Table 27 Matching MBMs to DS30 bus capacity
DS30 split
Type of module
2 Set the bus numbers and offsets on the MBM DIP switches. Refer to
switch settings" on page
DS30, and you assign station MBMs starting from the top DS30.
3
Install the MBMs into the BCM main unit or expansion unit. Refer to
module (MBM)" on page
Combination and specialized media bay modules
DDIM module
2 DS30 buses/
offset set to 0
2/6 (default) _____
Number required
116. Note that you assign trunk MBMs starting from the bottom
105.
Chapter 8 Installing a media bay module (MBM)
1 full DS30
for DTM
module
1 full DS30
for data
3/5 (extra IP lines) _____
DS30s/offsets required
BCM200/400 4.0 Installation and Maintenance Guide
Note: The FEM module requires a
DS30 bus for each port that is
active. If all ports are active, no
other modules can be added to
the system.
"Determining MBM DIP
"Installing a media bay
113