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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|Swaziland||Busy tone - I||400||0.5 on 0.5 off|
|Swaziland||Busy tone - II||400||0.4 on 0.4 off|
|Swaziland||Number unobtainable tone|
|Swaziland||Payphone recognition tone - I|
|Swaziland||Payphone recognition tone - II|