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Installation and Maintenance Guide
Appendix B
Media bay module combinations
This section describes some combinations of trunk and station modules to demonstrate how to fit
the modules into the DS30 channel resources. These configurations are meant to help demonstrate
how your system can be configured using the information in this guide and do not necessarily
reflect real-life configurations.
Combining CTMs and 4X16s
The 4X16 combination media bay module is a combination of a CTM and a DSM. A maximum of
four CTMs can fit into a DS30 channel, when each is given a different offset. Therefore, you can
combine a maximum of three CTMs with a 4X16 combination module. This configuration would
occupy two full DS30 channels.
Which means, you can install a maximum of three of these combinations in a Business
Communications Manager box with an extension box added to it. Table 63 demonstrates this
configuration of CTMs and 4X16 modules, including the switch settings for each module.
Table 63 CTMs combined with 4X16 modules
Each heavily-outlined and shaded square
represents one module. Switch setting
DS30
channel #
2
4x16s
Offset 3
4
CTMs
Offset 0, 1 and 2
1
CTM8
Offset 2 123456
2
0 CTM settings: onononononon
1 CTM settings: on on offononon
2 CTM settings: on offonononon
3 Switch settings for 4X16: on off offononon
3
4
0 CTM settings: ononononoff on
2ononoff on off on
on off on on off on
3 Switch settings for 4X16: on off off on off on
5