Motorola Astro APX User Manual page 46

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Talk-Prohibit (When the  button is pressed) the system is out of service.
Smart PTT Inhibit (When the  button is pressed) the channel is busy with the Smart PTT
feature enabled.
Out-of-Range (When the  button is pressed) indicates the radio is not in the range of the
trunked radio system.
Illegal Mode When 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.
Failsoft When a trunked system central controller failure in an unmuted receive
condition. The radio reverts from trunked operation to a system similar to
conventional radio repeater operation. Other system users can be heard
sharing the channel.
Time-Out Timer Warning When your present transmission will soon be disabled.
or
Menu Inactive Exit
Valid Key When you pressed a valid key, or you entered a feature configuration state, or
you are receiving or transmitting in the clear mode on secure models (with TX
Clear Alert Tones enabled).
Invalid Key When you tried to make an invalid key press, or that an emergency alarm,
reprogram request, or status/message was not acknowledged.
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