6. DMO Service
The direct mode operation (DMO) supports half-duplex operation and allows the terminals to
communicate directly with each other, without using a TETRA network infrastructure. Thus features that
require network access will be unavailable.
6.1
Individual Call
An individual call is a half-duplex call initiated by an individual user to another individual user. You can
initiate and receive an individual call to/from an individual contact.
Initiating an Individual Call
Step 1
Press the
Func/OK
key and go to “PhoneBook” menu to select an individual contact.
Step 2
Hold down the
PTT
key to initiate the call.
Step 3
Hold down the
PTT
key to talk after the call is established.
Answering an Individual Call
You can answer the call without any operation.
Ending an Individual Call
Press
to end the call.
6.2
Group Call
The group call operations in DMO are similar to those in TMO. Refer to
5.2Group Call
for details.
6.3
Emergency Call
An Emergency call is a call initiated by an individual user to the default group for summoning help in
urgent situations. With the highest priority, it can interrupt any other ongoing calls with lower priority if no
resource is available.
Initiating an Emergency Call
Hold down the
Emergency
key for the preset time to initiate an emergency call to the default group.
Answering an Emergency Call
You can answer an emergency individual call or group call without any operation.
Ending/Exiting an Emergency Call
The calling party can press
to end the Emergency call.
The called party can press
to exit the Emergency call.
Summary of Contents for PT560H F5 TETRA
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