Aastra DT390 User Manual page 27

C P B P
ORDLESS HONE FOR USINESS HONE
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
27 1424-EN/LZT 103 091 Uen D 2010-02-12