User's Manual

BCM450 System Start Up
54 NN40010-317 Issue 1.2 BCM450 Rls 6.0
6. When you have made any changes to the MBM’s, ensure they are in
the Enabled state (the Enable button will be greyed out).
Note: Some settings are only available in certain regional profiles.
Trunk Media Bay Modules
Media Bay Module
Utility
DTM Digital (Trunk Media Bay
Module)
Connects digital public switched telephone
lines to the BCM system (PRI, DASS2,
DPNSS)
ISDN BRI Module ( Basic Rate
Interface)
Connects a maximum of four ISDN BRI S/T
interfaces.
CTM4/CTM8 (Caller ID Media
Bay Module)
Connects a maximum of four (CTM4) or eight
(CTM8) analog public switched telephone
lines to the BCM system.
GATM4/GATM8 (Global
Analogue Trunk Module)
Connects 4/8 analog public switched
telephone lines to the BCM system.
ADID4/ADID8
Connects 4/8 Analog Direct Inward Dial trunks
to the system
Clock Sources and Digital Trunk/BRI Modules
For each DTM and BRI, choose one of the following settings: Primary
external, Secondary external, or Internal:
 Primary external: The DTM/BRI obtains the timing from the network
and the system synchronizes to it. This is the default value for the first
DTM in a BCM. There should only be one defined Primary clock source
on a System. Private network: If this system is in a private network
and is intended to provide the master clock for that private network, the
system must have one, and only one, Primary clock reference on a
DTM or BRI. If this system is intended to act as clock master in a
private network, then all clock sources should be set to Timing Master
on this system.