3am Systems - World PSTN Tone Database

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Wireline

World PSTN
tone database

Telephone line
signalling

World PSTN Tone Database
Your online resource for international call progress tones

Country
Tone		Exact match Includes all equivalent tones if left unchecked.
Frequency
Cadence

Last update: 12-Nov-2007 | Additions: 72 | Corrections: 122 | Deletions: 14 records.

Welcome to our most popular resource, the World PSTN Tone Database, dedicated to the A-Z of international call progress tones. From here you can research tones, get tone plans and, if signed in, audition the tones on-line.

Help us improve! If you have new information on Disconnect tones or official versions of national tone plans, we'd like to hear from you. A big thank you goes to all contributers, with special mention to Tom Keating's VoIP & Gadgets Blog. Keep'em coming!

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