AASTRA DT390 for MX-ONE User Guide EN - Manual (Page 27)

C ORDLESS P HONE FOR MX-ONE™
27 1424-EN/LZT 103 087 Uen F2 2012-03-02
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
tone every 15 seconds (to all parties)
Verification
tone
Warning tone,
expensive
route