Welcome to the World Tone Database, dedicated to the A-Z of international call progress tones. From here you can research tone parameters in national tone plans and hear the tones on-line.
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|Belgium||Busy tone||425||0.5 on 0.5 off|
|Belgium||Call waiting tone||1400||0.175 on 0.175 off 0.175 on 3.5 off|
|Belgium||Congestion tone||425||0.167 on 0.167 off|
|Belgium||Special dial tone|
|Belgium||Special information tone|