To determine bus requirements – Nortel Networks BCM200/400 User Manual
Page 115
Chapter 8 Installing a media bay module (MBM)
115
BCM200/400 4.0 Installation and Maintenance Guide
Figure 68 Space requirements for special MBMs
To determine bus requirements
1
Make a list of MBMs and the space requirements for each MBM you chose. Refer to the
following table.
2
Set the bus numbers and offsets on the MBM DIP switches. Refer to
. Note that you assign trunk MBMs starting from the bottom
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
Table 27 Matching MBMs to DS30 bus capacity
DS30 split
2/6 (default) _____
3/5 (extra IP lines) _____
Type of module
Number required
DS30s/offsets required
Combination and specialized media bay modules
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.
4x16 module
2 DS30 buses/
offset set to 0, 1, 2, or 3
DDIM module
2 DS30 buses/
offset set to 0
1 offset of
1 full DS30
for lines
1 full DS30
for digital
stations
1 full DS30
for DTM
module
1 full DS30
for data module
8x16 module
2 DS30 buses/
offset set to 0, 1, or 2
2 offsets of
1 full DS30
for lines
1 full DS30
for digital
stations