Operating Manual Part 15

October 2008 5300 ES Series Mobile Radio Operating Manual 6-13
SMARTNET / SmartZone / P25 Trunked Features
6.9.3 Emergency Calls
An emergency call urgently requests access to a voice channel (an emergency tone usually
does not sound at the console unless the call is combined with an Emergency Alarm). An
emergency call is placed by 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.
6.9.3.1 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 (P25 Trunked only) 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 (or select the menu option). 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.
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.