User`s guide
ASTRO XTL 5000 Digital Mobile Radio with O5 Control Head 9
Introduction
A series of 
two short, 
high-pitched 
tones
Automatic Call 
Back
Indicate that a channel is now available 
for your previously requested 
transmission.
A series of 
two short, 
high-pitched 
tones (same 
as automatic 
call back)
Tal k  Pe rm i t 
(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.
Single, high-
pitched tone 
every nine 
seconds
Failsoft In an unmuted receive condition, 
indicates a trunked system central 
controller failure. The radio reverts from 
trunked operation to a system similar to 
conventional radio repeater operation. 
Other system users can be heard 
sharing the channel.
Continuous, 
low-pitched 
tone
Illegal Mode Indicates that you have entered a mode 
where normal system traffic will be 
missed, or you are attempting something 
which is not permitted. Examples 
include: forgetting to exit the telephone 
interconnect mode after a call ends (fleet 
and subfleet calls cannot be received), 
attempting to transmit on a receive-only 
conventional mode, attempting to select 
a dynamic mode where no dynamic ID 
assignment has been made.
Brief low-
pitched tone
Time-Out Timer 
Warning
Indicates that your present transmission 
will soon be disabled.
Tone Type Name Description










