Audio And Ringer Signals - Proximus Forum 500 User Manual

Audio and Ringer Signals

Time axis in seconds
Audio Signals
Ringing signal
Internal signal
Internal dialling tone/
continuous tone
External dialling tone/
continuous tone
Positive acknowledgement
tone
Negative acknowledgement
tone
Special internal dialling tone
Special external dialling tone
Call-waiting signal
Special sensor signal
Ringer signals (analogue terminals)
External ringer signal*
Internal ringer signal
* The first ring is a single ring, and all subsequent rings are periodic double rings.
The tones and ringer signals mentioned above are valid for Belgium; in other countries they
may differ.
40
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Audio and Ringer Signals
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