Draft 02 - Sep 1 2015
Viking Mobile Radio Operating Manual
5-9
Conventional Mode Features
If silent programmed, none of these indications occur. If “No Receive Activity During
Emergency” is programmed, receive audio, the front panel LED, and receive icons are
disabled in the receive mode.
3
When the emergency alarm is acknowledged by the dispatcher, “ACK RECVD” is
briefly displayed on the Standard Control Head, “ACK Received” on the Lightning
Control Head, and the emergency acknowledge tone (two beeps) sounds. This alert
tone can be disabled if desired, and neither occur if Silent operation is programmed.
Retries will automatically occur for conventional analog until the retry counter
completes.
4
The emergency alarm mode is exited when radio power is cycled or by pressing and
holding the Emergency option switch.
5.9.2
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.
5.9.3
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.
