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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|El Salvador||Busy tone||425||0.32 on 0.32 off|
|El Salvador||Call waiting tone||425||0.35 on 15.0 off|
|El Salvador||Congestion tone||425||0.32 on 0.32 off|
|El Salvador||Dial tone|
|El Salvador||Intrusion tone|
|El Salvador||Line lock-out tone|
|El Salvador||Ringing tone|
|El Salvador||Special dial tone|
|El Salvador||Special information tone|
|El Salvador||Warning tone|