Tones and Their Meanings

Ringing tones are produced by an incoming call. Handset tones are those which you hear through the handset (receiver) or speakerphone.

Ringing Tones

1 ring — A call from another extension.

2 rings — A call from outside or from the attendant.

3 rings — A priority call from another extension, or from an Automatic Callback call you placed.

ring-ping (half ring) — A call redirected from your voice/data terminal to another because Send All Calls or Call Forwarding All Calls is active.

Handset Tones

busy signal — A low-pitched tone repeated 60 times a minute; indicates the number dialed is in use.

confirmation tone — Two rising tones; indicates a feature activation or cancellation has been accepted.

coverage tone — One short burst of tone; indicates your call will be sent to another extension to be answered by a covering user.

dial tone — A continuous tone; indicates dialing can begin.

error beep — One beep; alerts you that you pressed an invalid softkey.

error tone — An alternating high and low tone; indicates a dialing error, a denial of the service requested, or a failure to dial within a preset interval (usually 10 seconds) after lifting the handset or dialing the previous digit.

intercept tone/time-out tone — An alternating high and low tone; indicates a dialing error, a denial of the service requested, or a failure to dial within a preset interval (usually 10 seconds) after lifting the handset or dialing the previous digit.

local error tone — A steady low tone; indicates an incorrect button press.

programming tone — A low continuous tone when you are in programming mode with switch features (programming an Abbreviated Dialing button).

recall dial tone — Three short bursts of tone followed by a steady dial tone; indicates the feature request has been accepted and dialing can begin.

reorder tone — A fast busy tone repeated 120 times a minute; indicates all trunks are busy.

ringback tone — A low-pitched tone repeated 15 times a minute; indicates the number dialed is being rung.

self-test tone — Periodic tones; indicates the voice/data terminal is continuing to perform a self-test.

speakerphone reset tones — A rising set of tones; indicates the speakerphone is adjusting itself to the surrounding room acoustics.

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AT&T 8520T manual Tones and Their Meanings, Ringing Tones