Aastra Telecom dt690 Manual De Usuario

1424-EN/LZT 103 088 Uen D3 2010-11-16

32

DT690 D

ESCRIPTION

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

Dial tone

Special dial 
tone

Ringing tone 
or queue tone

Busy tone

Congestion 
tone

Number 
unobtainable 
tone

Call waiting 
tone

Intrusion tone

Conference 
tone

 

every 15 seconds (to all  parties)

Verification 
tone

Warning tone, 
expensive 
route