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Chapter 7: Advanced Features
7.8.8
Sending An Emergency Call With Hot Mic (Trunking
Only)
This feature allows you to send an Emergency Call with hot mic to a group of radios.
When and where to use:
Your radio must be programmed for this type of operation.
Your radio microphone is automatically activated, allowing you to communicate with the group of radios
without pressing the PTT button. This activated microphone state is also known as hot mic. The hot
mic applies to the first voice transmission from your radio during the Emergency call. For subsequent
transmissions in the same Emergency call, you must press the PTT button.
When indirect PTT such as Hot Mic is activated, the audio transmission can be configured in CPS to route
the audio to the radio internal microphone, wired RSM microphone, or Bluetooth wireless microphone.
Follow the procedure to send Emergency Call with hot mic on your radio.
Procedure:
1. Press the preprogrammed Emergency button.
One of the following scenarios occurs:
●
The display shows EMERGNCY and the current zone or channel. A tone sounds and the LED blinks
red momentarily.
●
A tone sounds to indicate that the selected channel does not support emergency and rejects to
launch emergency mode.
2. The microphone remains active for the hot mic time specified in the radio's codeplug programming.
3. To exit Emergency Call, press and hold the preprogrammed Emergency button.
7.8.9
Sending an Emergency Alarm with Emergency Call
When and where to use:
This feature gives your radio priority access on a channel for conventional system, and to a talkgroup for
trunking system.
Procedure:
1. Press the preprogrammed Emergency button.
If successful, the display shows EMERGNCY on the current zone and channel. You hear a short,
medium-pitched tone and the LED blinks red momentarily.
The radio exits Emergency Alarm and enters the Emergency Call state when one of the following
scenarios occur:
●
You receive the dispatcher acknowledgment. The display shows ACK RCVD.
●
You receive no acknowledgment. The display shows NO ACK.
●
You press the PTT button while in the Emergency Alarm mode.
If unsuccessful, you hear the radio sounds a short low-pitched tone to indicate the selected channel
does not support emergency and rejects to launch emergency mode.
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