Initiate An Emergency Call; Receiving An Emergency Call - Retevis RT72 User Manual

4) When an alarm tone sounds, the LED indicator flashes
orange. Hold the intercom in a vertical position and keep it
1 to 2 inches (2.5 to 5.0 cm) from the mouth.
5) Press [PTT] key to initiate the call, the LED indicator
lights up in red, and the talk group icon appears on the
screen.
6) Release the [PTT] key to answer.
Note: When an alarm sounds, the LED indicator flashes
orange and any key can be pressed to stop the alarm tone.
The current emergency mode is released by switching
channels or turning off the intercom.

8. Initiate an Emergency Call

After the alarm is activated, the alarm code is not required
to be sent for an impolite number and politeness, and the
host immediately initiates an emergency call. Once
confirmed, your radios microphone is automatically
activated, allowing you to communicate with other radios on
the pre-programmed alarm jump channel without pressing
the [PTT] key. This activated microphone state is called a
"Hot Mic". During the pre-programmed Hot Mic duration, in
addition to pressing the pre-programmed [Emergency Off]
key to cancel the alarm, pressing any other key will remain
in emergency mode. Until the end of the Hot Mic duration.
1) Press pre-programmed [Emergency On] key.
2) The LED indicator lights up in red and the emergency
call icon appear on the main screen.
28
3) The radio of the radios automatically activates and emits
a signal, speaking clearly to the microphone until the end of
the Hot Mic.
4) The Hot Mic duration ends and stops transmitting
signals. The screen displays"Alarm Sending" and the
contact and intercom ID alternate, and the LED indicator
lights up in orange until the end of the reception duration.
5) During the duration of the reception, you can answer the
other party's call.
Note: Press pre-programmed [Emergency Off] key, the
screen displays "Cancel Alarm" and exits the emergency
mode.

9. Receiving an Emergency Call

The radios that receive the emergency call must be
selected to the pre-programmed alarm-jump channel and
the jump channel must be a group call.
1) Upon receiving an emergency alert, the screen displays
the talk group icon and the sender's alias or ID alternately
displayed.
2) The LED indicator lights up in green and listens to the
other party until the transmitter's Hot Mic duration ends.
3) With the LED off, hold the intercom away from the
vertical position and keep it at a distance of 1 to 2 inches
(2.5 to 5.0 cm).
4) Press [PTT] key to initiate the call, the LED indicator lights
up in red, and the talk group icon appears on the screen.
29