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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| Country | Tone | Frequency/Hz | Cadence/s | Audio |
| Qatar | Acceptance tone | 400+450 | 0.38 on 0.25 off 0.38 on 2.00 off |  |
| Qatar | Busy tone - I | 400+450 | 0.8 on 0.8 off | |
| Qatar | Busy tone - II | 400 | 0.375 on 0.375 off | |
| Qatar | Busy tone - III | |||
| Qatar | Call waiting tone | |||
| Qatar | Congestion tone | |||
| Qatar | Dial tone | |||
| Qatar | Line lock-out tone | |||
| Qatar | Number unobtainable tone | |||
| Qatar | Refusal tone | |||
| Qatar | Ringing tone - I | |||
| Qatar | Ringing tone - II | |||
| Qatar | Special information tone | |||
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