ETSI TR 101 768
ETSI TR 101 768
Public Switched Telephone Network (PSTN); Study on the generation of analogue ringing signals Edition: 1.1.1European Telecommunications Standards Institute / 01-Dec-2000 / 9 pages
European Telecommunications Standards Institute / 01-Dec-2000 / 9 pages
A study on the issues relating to generation of analogue ringing signals.
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