DT690 DESCRIPTION

3.4 Tones

The following different tones are sent from the exchange to your phone.

Tone Description

Dial tone

Special dial tone

Ringing tone or queue tone

Busy tone

Congestion tone

Number unobtainable tone

Call waiting tone

Intrusion tone

Conference

every 15 seconds (to all parties)

tone

 

Verification tone

Warning tone, expensive route

1424-EN/LZT 103 088 Uen D3 2010-11-16

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Aastra Telecom DT690 manual Tones, Tone Description