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.
|Nauru||Busy tone||400||0.5 on 0.5 off|
|Nauru||Busy tone - pabx||425||0.375 on 0.375 off|
|Nauru||Congestion tone - pabx||425||0.375 on 0.375 off|
|Nauru||Dial tone - pabx|
|Nauru||Number unobtainable tone|
|Nauru||Recall dial tone - pabx|
|Nauru||Ringing tone - pabx|