E F Johnson Company 2425770 Benutzerhandbuch

5-10 

Viking Portable 600 Radio Operating Manual

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 “Emerg Rcvd” 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 this state, press the 
button programmed for “Emergency Clear”. The radio should return to its normal display, 
and the Emergency Received message should no longer show.

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 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. If it is sent 
on an analog channel, the DTMF Emergency ID is sent in place of the ANI DTMF PTT ID 
if applicable.

MDC, Five Tone Signaling, Single Tone Signaling, Two Tone Encoding or GE Star are 
sent for Analog Emergency Calls, depending on programming.

If Emergency Hot Mic has been enabled for emergency calls, 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 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 button. 
Subsequent presses do not trigger automatic transmissions. To reset this function, cycle 
power or press and hold the Emergency button.

1 If required, select a channel of a system on which Emergency Calls are enabled and 

press the Emergency option button or select that menu parameter. The Emergency Call 
is then sent as described in Section 5.9.1, "Emergency Alarms" 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