Viking VM600 Mobile Radio Operating Manual
6-9
Conventional Features
6.9.2
Emergency Call Alert
This feature notifies a user when an emergency call is being made on their selected P25
Conventional or P25 Trunking Talkgroup. The radio should also be programmed with an
“Emergency Clear” button.
If an emergency call is received by the radio on the selected channel, the emergency alarm
ACK tone will sound (five consecutive tones), and the Emergency Received message will
display, followed by the unit ID of the emergency radio. If any other emergency calls are
made after this initial one using a different radio, the tone will not sound, but the unit ID
will be updated to reflect the most recent emergency call. To exit out of this state, press the
“Emergency Clear” button. The radio should return to its normal display, and the
Emergency Received message should no longer show.
6.9.3
Emergency Calls
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 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.
6.9.3.1
Emergency Hot Mic
If Emergency Hot Mic has been enabled for emergency calls for the system, 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 this feature or emergency calls are not enabled, 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
emergency button or cycle power.
6.9.3.2
Placing an Emergency Call
To place an Emergency Call:
Draft 4/29/2014
Summary of Contents for Viking VM600 Series
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