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The emergency hot microphone function can be
programmed with emergency alarms and calls. Then
when the emergency switch is pressed, the microphone
audio is enabled and the transmitter keyed for the
programmed hot microphone time (10-120 seconds). If
"silent" emergency is programmed, no tones sound but
the transmit indicator still lights. If the "Surveillance
Mode" is enabled (see Section 4.7), all indicators,
lights, and tones are disabled.
6.10.2 EMERGENCY ALARMS
An emergency alarm is a special data transmis-
sion on the selected talk group that alerts a dispatcher
of an emergency situation (an emergency tone usually
sounds at the console). Proceed as follows to activate
an emergency alarm:
1. Select a SMARTNET/SmartZone or P25 Trunked
channel that has this feature enabled and then press
the Emergency option switch or select that menu
parameter. The radio then begins automatically
transmitting an emergency alarm data message and
"EMERGNCY" is indicated in the display for 3
seconds.
2. When the emergency alarm is acknowledged, "ACK
RCVD" is briefly displayed and the emergency
acknowledge tone (two beeps) sounds. Silent opera-
tion may also be programmed in which case no tone
sounds and there is no indication that an acknowl-
edgment occurred.
3. The radio continues to transmit this message until an
acknowledgment is received or the programmed
number of attempts have been made. To exit this
mode, power must be turned off.
6.10.3 EMERGENCY CALLS
An emergency call urgently requests access to a
voice channel (an emergency tone usually does not
sound at the console). To place this call, proceed as
follows:
1. Select a SMARTNET/SmartZone or P25 Trunked
channel that has this feature enabled and press the
Emergency option switch or select that menu
parameter. The emergency mode is indicated when
"ACK RCVD" is briefly displayed and then
SMARTNET/SMARTZONE/P25 TRUNKED FEATURES
"EMERGNCY" and the emergency talk group are
alternately displayed.
2. To place the emergency call, manually press the
PTT switch and begin speaking as with a standard
call. All group calls which follow are then emer-
gency 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.
3. To exit this mode, power must be turned off.
6.11 FAILSOFT OPERATION
If a failure occurs in the SMARTNET/Smart-
Zone or P25 Trunked system so that it cannot be used,
the system directs the transceiver to automatically
enter the failsoft mode. When in this mode, "FAIL-
SOFT" and the alias of the selected channel are alter-
nately displayed. A failsoft tone may also be heard,
depending on how the repeater is programmed.
When in the failsoft mode, operation is in the
conventional mode on the preprogrammed failsoft
channel (a different failsoft channel can be
programmed on each talk group). If a transmission is
attempted before a failsoft channel is located, a contin-
uous tones sounds until the PTT switch is released.
When the radio system returns to normal operation,
this is automatically detected and normal operation
resumes.
6.12 SMARTNET/SMARTZONE/P25 TRUNKED
SCANNING FEATURES
6.12.1 GENERAL
Scanning on a SMARTNET/Smartzone and P25
Trunked systems is called Priority Monitor Scan. The
following are unique features of this type of scanning.
For general scanning information applicable to all
operating modes, refer to Sections 4.8 and 4.9.
•
Scanning is turned on and off by the Scan option
switch or menu parameter. Talk groups (channels)
can be programmed so that scanning automatically
starts when the talk group is selected (Autoscan).
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