User's Manual

March 2008 5300 ES Series Mobile Radio Operating Manual 6-13
SMARTNET / SmartZone / P25 Trunked Features
6.9.3.1 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 ten-second intervals.
If the “Increment by 1” option is enabled, the automatic transmit period is programmed for
1-12 seconds in one-second intervals. If the Emergency Hot Mic 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, hold the emergency button or cycle
power.
6.9.3.2 Placing an Emergency Call
To place 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 Call is then sent as described in
Section 5.9.1 if applicable.
2 Emergency tones sound as follows: Emergency Call entry is played upon the pressing
of the Emergency button. Console Acknowledgement is played when an
acknowledgement is received back from the console for an emergency Call.
Emergency Exit is played when you press and hold the emergency button. Below are
the tones for Emergency.
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 4.10), 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.
Note Communications between the radio with the emergency and the dispatcher are closed.
That is, other stations in the talkgroup can see “Emergency” toggle on their displays, and
can listen to talk between the dispatcher and the radio with the emergency, but cannot talk
to that radio.
Console
Acknowledgement
Emergency Alarm
Ack
Emergency Alarm
Acknowledged
Successful
Two 1000 Hz 175 ms tones with
50 ms spacing followed by Three
1000 Hz 175 ms tones with 150
ms spacing
Emergency Call
Entry
Emergency Button
Press
Emergency button has
been Pressed
1000 Hz continuous tone for 175
ms.
Emergency Exit Emergency Canceled Emergency is
Canceled
1000 Hz continuous tone for 1
sec.