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 |
| Sweden | Busy tone - I | 425 | 0.25 on 0.25 off |  |
| Sweden | Busy tone - II, plmn/gsm | 425 | 0.5 on 0.5 off | |
| Sweden | Call waiting tone - I | 425 | 0.2 on 0.5 off 0.2 on | |
| Sweden | Call waiting tone - II, plmn/gsm | |||
| Sweden | Congestion tone - I | |||
| Sweden | Congestion tone - II, plmn/gsm | |||
| Sweden | Dial tone | |||
| Sweden | Number unobtainable tone | |||
| Sweden | Pay tone | |||
| Sweden | Payphone recognition tone | |||
| Sweden | Ringing tone - I | |||
| Sweden | Ringing tone - II, plmn/gsm | |||
| Sweden | Special dial tone | |||
| Sweden | Special information tone | |||
| Sweden | Warning tone - at time limit barring | |||
| Sweden | Warning tone - operator intervening | |||
| Sweden | Warning tone - three party conference | |||
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