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 |
| Romania | Busy tone - I, analogue | 450 | 0.15 on 0.18 off |  |
| Romania | Busy tone - II, digital | 450 | 0.17 on 0.17 off | |
| Romania | Dial tone | 450 | continuous | |
| Romania | Number unobtainable tone - I | |||
| Romania | Number unobtainable tone - II, digital | |||
| Romania | Ringing tone - I | |||
| Romania | Ringing tone - II | |||
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