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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|Botswana||Line lock-out tone||425||5.0 on 1.0 off|
|El Salvador||Line lock-out tone||425||0.167 on 0.167 off 0.500 on 0.167 off|
|Ethiopia||Line lock-out tone||425||0.4 on 0.4 off|
|Fiji||Line lock-out tone|
|Ivory Coast||Line lock-out tone|
|Kuwait||Line lock-out tone|
|Qatar||Line lock-out tone|
|Samoa||Line lock-out tone|