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Hot Microphone Feature
If the Hot Microphone feature was programmed into your MTH650
by your Service Provider, you can make an Emergency Group Call
and talk to the dispatcher (and members of your talkgroup) without
the need to press and hold the PTT.
The microphone will stay open for a time period (programmed by
your Service Provider). The microphone will stay open until:
• the Hot microphone time period expires
• you press PTT during the Hot Microphone period
• you press the End key
At the end of the Hot Microphone the Emgcy Mic Ended message
will be displayed and the MTH650 reverts back to the Emergency
Mode. The Hot Microphone feature is disabled and PTT operation
returns to normal.
If required you can resume Hot Microphone by pressing the
emergency key again.
Making an Emergency Group Call
To initiate or answer a call while in Emergency Mode:
1. Press and hold PTT.
2. Wait for the talk permit tone (if configured) and talk.
3. Release PTT to listen.
The Emergency Alarm is a special status message sent to the dispatcher
monitoring the selected talkgroup. This can be used in dispatch systems to
highlight emergency calls.
Some systems do not support the Emergency Alarm feature when the user is
in a “Local Area Service” area.
Warning
Pressing the Emergency button, even if Transmit Inhibit is activated, causes
the MTH650 to radiate immediately. The MTH650 must NOT be within the RF
sensitive area when entering Emergency mode.
!!
6866537D41-A.book Seite 25 Freitag, 5. März 2004 5:14 17
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