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 |
| Angola | Waiting tone | 400 | 1.0 on 5.0 off |  |
| Anguilla | Waiting tone | 440 | 0.5 on 10.0 off 0.5 on | |
| Argentina | Waiting tone | 425 | 0.4 on 0.2 off 0.4 on 4.0 off | |
| Austria | Waiting tone | |||
| Bhutan | Waiting tone | |||
| Botswana | Waiting tone | |||
| Brazil | Waiting tone | |||
| Brunei Darussalam | Waiting tone | |||
| Chile | Waiting tone | |||
| China | Waiting tone | |||
| Ghana | Waiting tone | |||
| Gibraltar | Waiting tone | |||
| Guyana | Waiting tone | |||
| Iceland | Waiting tone | |||
| Israel | Waiting tone - message | |||
| Jersey | Waiting tone | |||
| Korea | Waiting tone | |||
| Lao | Waiting tone | |||
| Montserrat | Waiting tone | |||
| Netherlands | Waiting tone | |||
| Papua New Guinea | Waiting tone | |||
| Russian Federation | Waiting tone | |||
| Saint Kitts & Nevis | Waiting tone | |||
| Sierra Leone | Waiting tone | |||
| Solomon Islands | Waiting tone | |||
| Trinidad & Tobago | Waiting tone | |||
| Turkey | Waiting tone - I | |||
| Turkey | Waiting tone - II | |||
| Turks & Caicos Islands | Waiting tone | |||
| Uruguay | Waiting tone | |||
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