Nortel Networks BCM1000 Determining module DS30 bus requirements

66 Chapter 4 Selecting the media bay modules for your system
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Determining module DS30 bus requirements
Figure 27 shows how much of a DS30 bus each module requires.
Figure 27 DS30 bus space requirements for media bay modules
1 DTM
3 BRIs
4 CTMs/
CTM8s/
per DS30
per DS30
DSM 16+
1 DSM 16
1 DSM 32
Trunks (lines) Stations (extensions/DNs)
4X16
1 DECT module
1 offset of
1 full DS30
Combination and specialized
per DS30
per DS30 bus
per 2 DS30
per DS30 bus
1 DS30 bus
bus
for lines
bus
bus
bus
bus
bus
for telephone
Note: The FEM module requires a
DS30 bus for each port that is active.
If all ports are active, no other mod-
ules can be added to the system.
(1 DECT module
1 DS30 bus/
offset set to 0
1 DS30 bus/
offset set to 0, 1, or 2
1 DS30 bus/
offset set to 0, 1, 2, or 3
1 DS30 bus/
offset set to 0, 1, or 2
1 DS30 bus/
offset set to 0 or 1
1 DS30 bus/
offset set to 0
2 DS30 bus/
offset set to 0
2 DS30 bus/
offset set to 0, 1, 2, or 3
1 DS30 bus/
offset set to 0
and equipment
connections
media bay modules
2 per DS30
per DS30
bus
max. of
2 offsets
1 DSM 32+
per DS30 bus
(module set to
double density)
4 ASM8/GASM8
per DS30
bus (FDD bus)
1 DS30 bus/
offset set to 0, 1, 2, or 3
On PDD DS30
bus, max. of two
modules
(module set to
double density)
1 DSM 32+
per 2 DS30
(module set to
single density)
1 DSM 16+
per DS30 bus
(module set to
single density)
GATM4s
GATM8s
per system)