Motorola TETRA MTM5400 User Manual

3.3.3
Receiving Group Calls in Idle
Procedure:
1 Your radio receives a Group Call.
NOTE: The incoming Group Call is signaled by a Receiving Group Call tone.
2 To respond, press and hold the PTT button.
3.3.4
D-PTT Preempt Group Call
NOTE: This is a Software Selling Feature.
The D-PTT Preempt Group Call allows superiors to take over and speak in an ongoing group call by
making preemptive priority calls.
NOTE: Your radio can only support either the D-PTT Tone feature or D-PTT Preempt Group
Call feature at a time.
By pressing the PTT (Push-To-Talk) button twice, you make a preemptive request to temporarily
interrupt an ongoing group call and gain permission to speak.
If your group call is preempted and you are still pressing the PTT button, your radio displays the PTT
Denied
prompt.
If your service provider enables the visual notification, your radio displays the PTT Interrupted
prompt throughout the group call preemption, even if you no longer hold the PTT
button.
If your service provider enables the audio notification, your radio plays the PTT Denied Tone until you
no longer hold the PTT button.
3.3.4.1
Preempting Group Calls
NOTE: Your radio can only support either the D-PTT Tone feature or D-PTT Preempt Group
Call feature at a time.
Procedure:
1 Your radio receives a Group Call.
2 Press the PTT button twice on the radio or the Remote Control Unit (RCU).
Call preempt is triggered.
3.3.5
Selecting DMO Communications Options
When and where to use: Helps to communicate with other radio users on the same talkgroup through
the Gateway or Repeater.
Procedure:
1 From the home screen, press Options.
2 Press Config.
3 Select one of the following options:
68015000180-MR
Chapter 3 : Modes
51

Motorola TETRA MTM5400 Specifications

General

Operating Temperature	-30°C to +60°C
IP Rating	IP54
Channels	Up to 1000
RF Power Output	10W
Frequency Bands	380-430 MHz, 806-870 MHz