User's Manual

User Guide
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en
Another possible configuration is to set the PTT priority as pre-emptive. This option (only
available by programming) will allow you to define priority users who will be able to interrupt
the talking party within a call.
8.2 Operation modes: Direct mode
This special operation mode, called DMO, allows you to communicate directly with other
TETRA terminals without having to use a network.
To access DMO mode, select the Modes\DMO menu or press the quick access you have
configured in the terminal for this function.
In DMO mode you can make group calls and individual calls. The emergency button is also
available, with which you can make a maximum priority call (pre-emptive) as explained in the
previous section. In this mode can made sending and receiving text and state messages.
Each group programmed to work in DMO mode is associated with a frequency, so changing
the group involves changing the frequency and only terminals with the same group selected
may communicate with each other in this operation mode.
Individual calls are made using the active channel, i.e., that associated with the selected
group.
Group calls
To make a group call in DMO mode, select the group with the arrows and press PTT. The
procedure is similar to a group call in network mode.