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53SL ES Series Mobile Radio Operating Manual April 2009
Emergency Alarm and Call
Section 7 - SMARTNET / SmartZone / P25 Trunked Features
- Talkgroup of the selected channel (tactical)
- Announcement group of the selected channel
• The emergency programming of the system to which that emergency talkgroup is linked
controls the emergency operation.
7.9.1
Emergency Alarms
An emergency alarm is a special transmission that alerts a dispatcher of an emergency
situation. It is sent automatically by pressing the Emergency option switch or by selecting
the menu parameter. The system to which the emergency channel is linked must have
Emergency Alarms enabled. If not, Emergency Alarms are disabled. The alarm is sent on
the control channel.
Proceed as follows to send an emergency alarm:
1
Press the Emergency option switch. The radio automatically transmits the emergency
alarm if programmed.
2
When the emergency alarm is acknowledged, “ACK RCVD” is briefly displayed and
the emergency acknowledge tone (five beeps) sounds. Silent operation may also be
programmed in which case no tone sounds and there is no indication that an
acknowledgment occurred.
3
The radio continues to transmit this message until an acknowledgment is received or
the programmed number of attempts have been made. The emergency alarm mode is
exited when radio power is cycled, or by pressing and holding the Emergency option
switch.
7.9.2
Emergency Call Alert
This feature notifies a user when an emergency call is being made on their selected P25
Conventional or P25 Trunking Talkgroup. The radio should also be programmed with an
“Emergency Clear” button.
If an emergency call is received by the radio on the selected channel, the emergency alarm
ACK tone will sound (five consecutive tones), and the Emergency Received message will
display, followed by the unit ID of the emergency radio. If any other emergency calls are
made after this initial one using a different radio, the tone will not sound, but the unit ID
will be updated to reflect the most recent emergency call. To exit out of this state, press
and hold the “Emergency Clear” button. The radio should return to its normal display, and
the Emergency Received message should no longer show.
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