User's Manual

CONVENTIONAL MODE FEATURES
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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 or
selecting the Emergency menu parameter. If the Emer-
gency 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. 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 steps. 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 func-
tion, 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-
gency option switch or select that menu parameter.
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
4.7), 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.
5.10.4 EMERGENCY MAN-DOWN FEATURE
To have this feature, a special man-down switch
(currently available only from third-party vendors) is
attached to the accessory connector of the radio. Then
if this feature is enabled by programming and the radio
is in a horizontal position for longer than the
programmed time (0-63 seconds), an emergency
condition is triggered the same as if the Emergency
switch was pressed. The emergency can be canceled
by a press and release of the Emergency switch. Note
that accessories such as speaker-microphones cannot
be used with this feature.
5.11 CONVENTIONAL MODE SCANNING
5.11.1 GENERAL
Channel scanning features common to all oper-
ating modes are described in Sections 4.8 and 4.9. The
following information describes features unique to
conventional operation.