Distinctive dial tone for a VoIP call
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United States of America Patent
Stats
-
Sep 22, 2009
Grant Date -
Mar 9, 2006
app pub date -
Sep 3, 2004
filing date -
Sep 3, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A VoIP analog telephone adapter coupled to a telephone allows a telephone call to be made over the Public Switched Telephone Network (PSTN) or over the Internet. Prior to dialing a phone number, with the telephone “off-hook”, a caller receives an audible indication as to whether the call will be made over the PSTN or the Internet through a standard dial tone generated by a Central Office or a distinctive dial tone generated by the adapter. The distinctive dial tone is different from the PSTN's dial tone.
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Family
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Cited Art Landscape
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