User's Manual

Draft
December 2006 5300 ES Series Mobile Radio Operating Manual -11
4 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, the channel is changed, or by pressing and holding
the Emergency option switch.
6.9.2 Emergency Calls
An emergency call urgently requests access to a voice channel (an emergency tone usually
does not sound at the console). An emergency call is placed by pressing the PTT switch
after pressing the Emergency option button. If the Emergency Hot Mic feature is enabled,
the emergency call is automatically transmitted without having to press the PTT switch
(see following description). The system to which the emergency channel is linked must
have Emergency Calls enabled.
6.9.2.1 Emergency Hot Mic
If Emergency Hot Mic has been enabled for emergency calls, automatic transmitting
occurs with microphone audio unmuted without having to manually press the PTT switch.
The automatic transmit period is programmed for 10-120 seconds in 10-second intervals.
If this feature or emergency calls are not enabled by programming, automatic transmitting
does not occur. This feature is initiated only on the first press of the Emergency switch.
Subsequent presses do not trigger automatic transmissions. To reset this function, the
channel must be changed or power cycled.
6.9.2.2 Placing an Emergency Call
1 If required, select a channel of a system on which Emergency Calls are enabled and
press the Emergency option switch. The Emergency Alarm is then sent as described in
Section 5.9.1 if applicable.
2 The emergency mode is indicated when “ACK RCVD” is briefly displayed and then
“EMERGNCY” and the emergency talk group are alternately displayed.
3 If the preceding Emergency Hot Mic feature is enabled, the call is automatically
transmitted without pressing the PTT switch. If it is disabled, press the PTT switch and
begin speaking as with a standard call.
4 All group calls which follow are then emergency calls (private, telephone, and call alert
calls are not allowed). If the channel is changed, the call is made on the emergency talk
group programmed for the new channel. If the Surveillance Mode is enabled (see
Section 4.9), all indicators, lights, and tones are disabled. If “No Receive Activity
During Emergency” is programmed, receive audio, the front panel LED, and receive
icons are disabled in the receive mode.
5 To exit this mode, cycle radio power or press and hold the Emergency switch.