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ETSI TR 101 183
- Public Switched Telephone Network (PSTN); Analogue ringing signals
- standard by European Telecommunications Standards Institute, 05/01/1998
- Publisher: ETSI
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This Technical Report would give details of ringing signals in use on different Public Switched Telephone Networks for ordinary ringing signal, distinctive ringing and other special ringing signals which may be already in use or which are planned to be introduced.
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