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. For additional information, refer to “Tones” in Section 5.

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AT&T AT&T manual Call Progress Tones