AASTRA 4223 Manual Do Utilizador

Description

14

Tones and signals

The following different tones and signals are sent from the 

exchange to your phone. 

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

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