CONVENTIONAL FEATURES
29
5.10.3 EMERGENCY CALLS
General
The Emergency Call feature allows a user to
place an emergency voice call by pressing the PTT
switch after pressing the Emergency option button. If
the Emergency Hot Mic feature is enabled, the emer-
gency 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. Analog and
Digital (P25) calls can be individually enabled.
If the emergency call is sent on a P25 channel, an
emergency indication is sent according to the P25
standard (the emergency bit is set in the Common Air
Interface). If it is sent on an analog channel, the
DTMF Emergency ID is sent in place of the ANI
DTMF PTT ID if applicable.
NOTE: The DTMF
Emergency ID is sent only if pre- or post- DTMF ANI
is enabled on the channel by programming.
Emergency Hot Mic
If Emergency Hot Mic has been enabled for
emergency calls, automatic transmitting occurs with
microphone audio unmuted without having to manu-
ally 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.
Placing an Emergency Call
1. If required, select a channel of a system on which
Emergency Calls are enabled and press the
EMER
option switch. The Emergency Alarm is then sent as
described in Section 5.10.2 if applicable.
2. 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. If the channel is changed, operation
continues on the new channel in the emergency
mode.
3. With analog calls, subsequent presses of the PTT
switch cause the DTMF emergency ID to be sent
according to the ANI programming (if DTMF ANI
is enabled on the channel). With digital calls, the
calls continue to have the emergency bit set.
4. If the Surveillance Mode is enabled (see Section
4.9), all indicators, lights, and tones are disabled.
5. To exit this mode, cycle radio power, change chan-
nels, or press and hold* the Emergency switch.
5.11 CONVENTIONAL MODE SCANNING
5.11.1 GENERAL
Channel scanning features common to all oper-
ating modes are described in Sections 4.11 and 4.12.
The following information describes features unique
to conventional operation.
5.11.2 SELECTING A SCAN LIST
Conventional mode scan lists are selected by
repeatedly pressing the
SCAN
option switch. For
example, if three scan lists are programmed, the first
press of the Scan switch activates scanning and scan
list 1, the second press activates scan list 2, the third
press activates scan list 3, and the fourth press disables
scanning and then the cycle repeats. The currently
selected scan list is flashed in the display as “SCAN
LIST x”, where “x” is the scan list number. Scanning
is disabled when “SCAN OFF” is displayed and the
scanning indicator
turns off.
5.11.3 TRANSMITTING IN SCAN MODE
Each conventional scan list can be programmed
for one of the following modes. These modes deter-
mine if priority sampling occurs and also the channel
on which transmissions occur while scanning. Refer to
the next section for more information on priority
sampling.
*
This feature requires firmware 1.24.1/2.2.1/3.2.1 or
later and PCConfigure 1.22.0 or later.
