
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 |
Ethiopia | Acceptance tone | 425 | continuous | ![]() |
Ethiopia | Busy tone | 425 | 0.4 on 0.4 off | |
Ethiopia | Call waiting tone | 425 | 0.2 on 0.6 off | |
Ethiopia | Congestion tone | |||
Ethiopia | Dial tone | |||
Ethiopia | Intrusion tone | |||
Ethiopia | Line lock-out tone | |||
Ethiopia | Refusal tone | |||
Ethiopia | Ringing tone | |||
Ethiopia | Special dial tone | |||
Ethiopia | Special information tone | |||
Ethiopia | Warning tone |