User Manual
33
en
It is possible to configure two additional codes – emergency codes – such as 112, 999 or
others.
When the user enters these codes on the keyboard, the MDT-400 sends the emergency call
as programmed.
In addition, the sending of standard emergency message can also be configured (Status code:
0) just before carrying out the event programmed for the emergency key.
Another possible configuration, only available by programming, is to define the PTT as priority
within the active call. This option enables the definition of priority users, who will be able to
interrupt the person speaking during a call in progress.
9.2
Working modes: Direct mode
This special mode, called DMO, enables you to communicate directly with other TETRA
equipment without needing to use a network.
To access DMO mode, select the
Working Modes/DMO
menu, or press the rapid access
configured in your equipment for this function.
In DMO mode, you may carry out group calls and individual calls. The emergency button will
also be available, with which you can carry out a call with maximum priority (pre-emptive), as
detailed in the previous section.
Each group programmed to work in DMO mode has a frequency associated, so that a change
of group implies a change of frequency and only equipment with the same group selected will
be able to communicate with one another in this working mode.
Individual calls will be carried out using the active channel, i.e., the one associated to the
selected group.
Summary of Contents for DT-400
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