User's Guide

Table Of Contents
3 If there is no voice activity for a predetermined
period of time, the call ends.
NOTE:
Your radio is not able to terminate a phone
call as a group call. The telephone user
must end the call. The recipient user is only
allowed to talk back during the call.
You hear a short tone.
5.6.6
Initiating Transmit Interrupt
An ongoing call is interrupted, when you perform the
following actions:
Press the Voice PTT button.
Press the Emergency button.
5.6.7
Call Preemption
Call Preemption allows a radio to stop any in-progress
voice transmission and initiate a priority transmission.
With the Call Preemption feature, the system interrupts
and preempts ongoing calls in instances where trunked
channels are unavailable.
Higher priority calls such as an Emergency Call or an
All Call preempt the transmitting radio to accommodate
the higher priority call. If no other Radio Frequency (RF)
channels are available, an Emergency Call preempts an All
Call as well.
5.6.8
Voice Interrupt
Voice Interrupt allows the user to shut down an in-progress
voice transmission.
This feature uses reverse channel signaling to stop the
in-progress voice transmission of a radio, if the interrupting
radio is configured to Voice Interrupt, and the transmitting
radio is configured to be Voice Call Interruptible. The
interrupting radio is then allowed to make a voice
transmission to the participant in the stopped call.
The Voice Interrupt feature significantly improves the
probability of successfully delivering a new transmission to
the intended parties when a call is in progress.
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