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 |
| Cuba | Acceptance tone | 425 | continuous |  |
| Cuba | Busy tone | 400 | 0.5 on 0.5 off | |
| Cuba | Busy tone | 425 | 0.5 on 0.5 off | |
| Cuba | Busy tone | |||
| Cuba | Busy tone | |||
| Cuba | Call waiting tone - I | |||
| Cuba | Call waiting tone - II | |||
| Cuba | Congestion tone | |||
| Cuba | Congestion tone | |||
| Cuba | Congestion tone | |||
| Cuba | Dial tone - I | |||
| Cuba | Dial tone - I | |||
| Cuba | Dial tone - II | |||
| Cuba | Negative indication tone | |||
| Cuba | Ringing tone - I | |||
| Cuba | Ringing tone - II | |||
| Cuba | Ringing tone - II | |||
| Cuba | Ringing tone - II | |||
| Cuba | Ringing tone - III | |||
| Cuba | Ringing tone - IV | |||
| Cuba | Special information tone - I | |||
| Cuba | Special information tone - II | |||
| Cuba | Warning tone - I, operator intervening | |||
| Cuba | Warning tone - II, operator intervening | |||
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