Audible Signals; Tone Characteristics - Ericsson DT368 User Manual

Audible Signals

Dial tone
Special dial tone
Ringing tone or
Queue tone
Busy tone
Congestion tone
Number unobtainable
tone
Call waiting tone
Intrusion tone
Conference tone
Verification tone
Warning tone,
expensive route
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Audible Signals
The following different tones and signals are sent from the
exchange to your telephone.

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. If you get a tone that is not described or you cannot
identify, ask your system administrator.
every 15th second (to all parties)
every 4th second
DT368