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CALL PROGRESS TONES
Call Progress tones provide audible feedback on the status of calls during call set-up.
● Busy Tone:
A slow pulsed tone indicating that all facilities for answering the call
are in use.
● Call Waiting (Camp-On) Tone:
A single short tone to a busy terminal indicating
that another call is waiting (has been “camped on” by the attendant).
● Confirmation Tone: Three short tones indicating that the system has accepted the
instruction entered or that your ARS queued call is being placed.
●
Dial Tone: A steady tone indicating that dialing or feature activation can begin.
● Dialing Feedback: Indicates that a digit has been dialed.
● Preferred Route (Queuing) Tone (ARS): Five short tones. Indicates no facility
is currently available to place your call.
If you remain off-hook, your call will be
placed as soon as a facility becomes available.
● Reorder Tone:
A fast pulsed tone indicating that all trunks are busy, a dialing
error has occurred, or the terminal is restricted from making this call.
● Ringback Tone:
In general, indicates that a called terminal is ringing.
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For additional information, refer to “Tones” in Section 5.