Tones and Their Meanings

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

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, not repeated) — A call redirected from your voice terminal to another because Send All Calls or Call Forwarding—Follow Me is active.

Handset Tones

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

call waiting ringback tone — A ringback tone with a lower-pitched signal at the end; indicates that the extension called is busy, but the called party has been given a call waiting tone.

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AT&T ISDN 7505, ISDN 7507, ISDN 7506 manual Tones and Their Meanings, Ringing Tones