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 |
| Azerbaijan | Busy tone | 450 | 0.35 on 0.35 off |  |
| Azerbaijan | Dial tone | 450 | continuous | |
| Azerbaijan | Ringing tone | 450 | 1.0 on 4.0 off |
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