User guide

6
Introduction
Four high-
pitched
tones
Mobile Unit
Acknowledge
Indicate that a Call Alert page has
been received by the intended
unit, or the emergency alarm,
reprogram request, or status/
message transmission has been
acknowledged by the intended
dispatcher.
Sound
similar to a
telephone
busy signal
System Busy Indicates, when you press the
microphone push-to-talk (PTT)
button, that you cannot transmit
because all system radio channels
are in use. Release the PTT button
and wait for call back.
A series of
three short,
high-pitched
tones
Automatic Call
Back
Indicate that a channel is now
available for your previously
requested transmission.
A series of
three short,
high-pitched
tones (same
as automatic
call back)
Talk Permit
(optional)
Indicate, when you press the
microphone PTT button, that the
system is accepting your
transmission.
Continuous,
low-pitched
tone
Talk-Prohibit/
Out-of-Range
Indicates, when you press the
microphone PTT button, that either
you are out of the range of the
trunked radio system, or the
system is out of service, or the
channel is busy with the Smart
PTT feature enabled.
Tone Type Name Description