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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|Syria||Busy tone||450||0.5 on 0.5 off|
|Syria||Call waiting tone||450||0.1 on 0.2 off 0.1 on 9.5 off|
|Syria||Congestion tone||450||0.25 on 0.25 off|
|Syria||Special information tone|