Method of and system for extending internet telephony over virtual private network direct access lines
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United States of America Patent
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Sep 17, 2002
Grant Date -
N/A
app pub date -
Jul 29, 1999
filing date -
Jul 29, 1999
priority date (Note) -
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Abstract
A virtual private network includes an internet protocol (IP) network and a public switched telephone network (PSTN). An enterprise gateway is operably connected to the IP network. The enterprise gateway is operably connected to a switch of the PSTN through a direct access line (DAL). The set-up signaling for virtual private network calls and the calls themselves are transported across the internet protocol network and the public switched telephone network through the direct access line.
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