Tones And Signals; Tone Characteristics - Aastra DIALOG 4223 PROFESSIONAL User Manual

Dial tone
Special dial tone
Ringing tone or queue tone
Busy tone
Congestion tone
Call waiting tone
Intrusion tone
Conference tone
Warning tone, expensive route
Dialog 4223 Professional/Dialog 4225 Vision

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.
every 15 seconds (to all parties)
Description
15