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 |
| Poland | Busy tone | 425 | 0.5 on 0.5 off |  |
| Poland | Busy tone - analogue | 400 | 0.5 on 0.5 off | |
| Poland | Call waiting tone | 425 | 0.15 on 0.15 off 0.15 on 4.0 off | |
| Poland | Congestion tone | |||
| Poland | Congestion tone - analogue | |||
| Poland | Dial tone | |||
| Poland | Dial tone - analogue | |||
| Poland | Number unobtainable tone | |||
| Poland | Ringing tone | |||
| Poland | Ringing tone - analogue | |||
| Poland | Route tone | |||
| Poland | Second dial tone | |||
| Poland | Special dial tone | |||
| Poland | Special information tone | |||
| Poland | Warning tone | |||
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