Motorola 4550 - Manual (Page 48)

Advanced Features
English
38
Responding to an Emergency Alarm
Procedure:
When receiving an Emergency Alarm:
1 Press any button to stop all Emergency Alarm received
indications.
2 If the Channel Free Indication feature is enabled, you
will hear a short alert tone the moment the transmitting radio
releases the PTT button, indicating the channel is free for
you to respond.
3 Press PTT button to transmit non-emergency voice to the
same group that the Emergency Alarm was targeted to. The
green LED lights up. Your radio remains in the Emergency
mode.
4 Wait for the Talk Permit Tone to finish (if enabled) and
speak clearly into the microphone.
OR
Wait for the PTT Sidetone to finish (if enabled) and
speak clearly into the microphone.
5 Release the PTT button to listen. When the emergency
initiating radio responds, the green LED blinks. You see the
Group Call icon, the group alias or ID, and transmitting radio
alias or ID on your display.
6 Once your call ends, press R , then press Emergency
Off button immediately to clear the Emergency Call received
indications and exit Emergency mode.
7 The radio returns to the Home screen.
Emergency voice can only be transmitted by the emergency
initiating radio. All other radios (including the emergency
receiving radio) transmit non- emergency voice.
Sending an Emergency Alarm
This feature allows you to send an Emergency Alarm, a non-
voice signal, which triggers an alert indication on a group of
radios.
Procedure:
1 Press the programmed Emergency On button or the
Emergency footswitch.
2 The display shows Sending Alarm, which alternates with
your radio ID. The green LED lights up and the Emergency
icon appears on the Home screen display.
NAG_6880309T15.book Page 38 Tuesday, March 9, 2010 11:47 AM