Motorola TETRA MTM800 - Manual (Page 25)

23
En
g
li
s
h
VOX Control
VOX (Voice Operating Transmission) allows the user to transmit
voice in a hands-free condition. The radio is detecting audio
automatically when full duplex private call and telephone call use
the fist microphone.
This feature is only available if set up by your Service Provider. If it
is disabled, transmission can start upon pressing PTT.