CONVENTIONAL FEATURES
29
3. When the emergency alarm is acknowledged by the
dispatcher, “ACK RCVD” is briefly displayed and
the emergency acknowledge tone (two beeps)
sounds. This alert tone can be disabled if desired,
and neither occur if Silent operation is programmed.
4. The emergency alarm mode is exited when radio
power is cycled or by pressing and holding* the
Emergency option switch.
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. If
“No Receive Activity During Emergency” is
programmed, receive audio, the front panel LED,
and receive icons are disabled in the receive mode
(firmware Version 1.28/2.6/3.6/4.2 or later only).
5. To exit this mode, cycle radio power 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
Default Scan List
Conventional systems are programmed with a
default scan list that is normally selected by all chan-
nels in that system. However, there is a programmable
option to slave a particular conventional scan list to a
zone (firmware 1.28/2.6/3.6/4.2 or later only). This
*
This feature requires firmware Version 1.24.1/2.2.1/3.2.1/
4.2 or later.
