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Emergency Mode
Emergency Group Call without the need to press and hold
the PTT.
The following will happen upon entering Emergency Mode:
1. The MTP850 will automatically send an Emergency Alarm
to the dispatcher (if configured by your Service Provider).
2. A Talk permit tone will be heard.
3. The following typical display will appear:
The microphone will stay open for a time
period determined and programmed by your
Service Provider.
After the Hot Microphone time period expires,
or if you press PTT during the Hot Microphone
period, or if you press
End soft key: the Hot Mic Ended
message will be displayed.The talk session ends. To resume,
press the Emergency button again.
If talk permit is granted to another member of
the group, an “Emergency call received” tone
will be heard. If configured by your Service
Provider, your MTP850 will automatically
attempt to get talk permit again and the
Wait
For Mic
message will be displayed.
Receiving an Emergency Group Call
A terminal in TMO receives an Emergency Group Call to the
selected group, associated ATG (Announcement Talkgroup),
or scanned group. If the ATG is the currently selected group,
the terminal will receive the Emergency Group Call to the
group associated with this ATG. (For information on the ATG,
see page 31.)
When the MTP850 receives the call, the display will show
Emgcy In Use and the caller’s identity.
If upon entering Emergency Mode, your MTP850 receives an
Emergency call, and Hot Microphone was enabled by your
During this pending time the MTP850 microphone is not active until
the Emgcy Mic On message is displayed again.
Hot Mic On
Folder 1
Talkgroup 1
Optns End
Emgcy In Use
ID:David
Wait For Mic
Optns End
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