Aastra Dialog 4420 IP Basic - Tones and Signals

13Dialog 4420 IP Basic
Description
Tones and signals
The following different tones and signals are sent from the
exchange to your phone.
Tone characteristics
The tones shown in this section are the most used tones
worldwide. Many markets use a differing tone for one or more
situations.
Dial tone
Special dial tone
Ring tone or queue tone
Busy tone
Congestion tone
Call waiting tone
or verification tone
Intrusion tone
Conference tone every 15 seconds (to all parties)
Hold tone
Connection in progress tone