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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|San Marino||Busy tone||425||0.2 on 0.2 off|
|San Marino||Dial tone||425||0.6 on 1.0 off 0.2 on 0.2 off|
|San Marino||Ringing tone||425||1.0 on 4.0 off|