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 |
| Papua New Guinea | Busy tone | 400 | 0.375 on 0.375 off |  |
| Papua New Guinea | Busy tone | 425 | 0.375 on 0.375 off | |
| Papua New Guinea | Congestion tone | 400 | 0.375 on 0.375 off | |
| Papua New Guinea | Congestion tone | |||
| Papua New Guinea | Dial tone | |||
| Papua New Guinea | Dial tone | |||
| Papua New Guinea | Dial tone | |||
| Papua New Guinea | Number unobtainable tone | |||
| Papua New Guinea | Number unobtainable tone | |||
| Papua New Guinea | Payphone recognition tone - I | |||
| Papua New Guinea | Payphone recognition tone - II | |||
| Papua New Guinea | Payphone recognition tone - III | |||
| Papua New Guinea | Ringing tone | |||
| Papua New Guinea | Ringing tone | |||
| Papua New Guinea | Ringing tone | |||
| Papua New Guinea | Ringing tone | |||
| Papua New Guinea | Ringing tone | |||
| Papua New Guinea | Special dial tone | |||
| Papua New Guinea | Special information tone | |||
| Papua New Guinea | Waiting tone | |||
| Papua New Guinea | Warning tone - operator intervening | |||
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