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 |
| Luxembourg | Busy tone | 425 | 0.48 on 0.48 off |  |
| Luxembourg | Busy tone | 450 | 0.48 on 0.48 off | |
| Luxembourg | Call waiting tone | 425 | continuous | |
| Luxembourg | Congestion tone | |||
| Luxembourg | Congestion tone | |||
| Luxembourg | Dial tone | |||
| Luxembourg | Dial tone | |||
| Luxembourg | Ringing tone | |||
| Luxembourg | Ringing tone | |||
| Luxembourg | Special dial tone | |||
| Luxembourg | Special dial tone | |||
| Luxembourg | Special information tone | |||
| Luxembourg | Test number tone | |||
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