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.
Business customers subscribing to our paid premium service can benefit from unrestricted searching of over 1,700 records, update notifications and support, for up to ten users, ad-free.
Help us improve! If you have updated information on Disconnect tones or official versions of national tone plans, please let us know.
| Country | Tone | Frequency/Hz | Cadence/s | Audio |
| Antigua & Barbuda | Busy tone | 480+620 | 0.5 on 0.5 off |  |
| Antigua & Barbuda | Call waiting tone | 480 | 1x(0.6 on 10.0 off) | |
| Antigua & Barbuda | Congestion tone | 480+620 | 0.25 on 0.25 off | |
| Antigua & Barbuda | Dial tone | |||
| Antigua & Barbuda | Pay tone | |||
| Antigua & Barbuda | Ringing tone | |||
| Antigua & Barbuda | Special information tone | |||
Corporate user? Please consider sponsoring this service by getting a paid subscription for your institution.