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Chapter 4 Selecting the media bay modules for your system 59
Installation and Maintenance Guide
An example:
• If you require 24 T1 digital lines, you need one DTM because a single DTM can handle 24
T1 lines (North America).
• If you require two analog lines and 24 T1 digital lines, you need one CTM and one DTM.
BRI ISDN lines BRI 4 ISDN loops (8
lines)
______ BRI
Cordless handsets (DECT)
(selected profiles only)
DECT 4 ISDN loops
(requires a full
DS30 bus)
______ DECT
Note: Although the DTM supports several types of digital lines, you cannot connect
different types of lines to the same DTM.
You can add a maximum of three DTMs to your Business Communications Manager
system, and only on the BCM1000.
Tip: The BCM1000 can hold three media bay modules. If you require more than three
modules, a BCM1000e can be connected to support an additional six additional modules.
Table 7 Determining trunk module requirements (Continued)
Type of lines Number of lines
Type of media bay
module
Number of lines
per module
Number of modules
required