International Telephone Ring-Back Signaling Reference

This is technical information way over my head, but may be useful to some, it's an explanation on how ring-back signals are used in public switched telephone networks and lists a chart of ring-back signaling by country (frequency, cycle duration, amplitude...)

emily | 9:10 AM | Ringback Tones |
The Permanent Link to this page is: http://www.textually.org/ringtonia/archives/2004/04/003584.htm

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