Tones and Their Meanings

Ringing tones are produced by an incoming call. Feedback tones are those that you hear through the handset (receiver) or the speaker, if you have one.

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 a call from an Automatic Callback call that you placed.

half ring — A call redirected from your voice terminal to another because Send All Calls or Call Forwarding — Follow Me is active.

intercom ring — A call directed to you by the Intercom feature.

Feedback Tones

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

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AT&T 7406BIS manual Tones and Their Meanings, Ringing Tones