26
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 key 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.
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, then press PTT.
The procedure is similar to a group call in network mode.
Individual calls
To start a private call, dial the destination number or select it from the phonebook, then
press PTT.
Before making the call, you can select a special function called
Presence check
, with
which you will receive a message if the user you are calling is not operating in the
selected DMO channel.
