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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|Latvia||Busy tone||425||0.3 on 0.3 off|
|Latvia||Call waiting tone||425||0.2 on 5.0 off|
|Latvia||Confirmation tone||425||0.4 on 0.4 off|
|Latvia||Special information tone|