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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Country | Tone | Frequency/Hz | Cadence/s | Audio |
Korea | Busy tone | 480+620 | 0.5 on 0.5 off | |
Korea | Congestion tone | 480+620 | 0.3 on 0.2 off | |
Korea | Dial tone | 350+440 | continuous | |
Korea | Intercept tone | |||
Korea | Number unobtainable tone | |||
Korea | Recall dial tone - I | |||
Korea | Recall dial tone - I | |||
Korea | Recall dial tone - II | |||
Korea | Recall dial tone - II | |||
Korea | Ringing tone | |||
Korea | Waiting tone | |||
Korea | Warning tone - operator intervening |