You Hear Tone Name When
Single, high-
pitched tone
Central Acknowledge When a Call Alert, emergency alarm, reprogram request, or status/
message transmission is received by the system’s central control-
ler.
Four high-
pitched tones
Mobile Unit Acknowledge When a Call Alert page is received by the intended unit, or the
emergency alarm, reprogram request, or status/message trans-
mission is acknowledged by the intended dispatcher.
Sound similar
to a telephone
busy signal
System Busy When the PTT button is pressed, indicates transmission fail be-
cause all system radio channels are in use. Release the PTT but-
ton and wait for call back.
A series of
two short,
high-pitched
tones
Automatic Call Back When a channel is now available for your previously requested
transmission.
Talk Permit (Optional) When the PTT button is pressed, indicates the system is accepting
your transmission.
A series of
low-pitched
tones followed
by a series of
high-pitched
tones
Scan Alert On When Scan feature is activated through the preprogrammed but-
ton.
A series of
high-pitched
tones followed
Scan Alert Off When Scan feature is deactivated through the preprogrammed
button.
English
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