Patents Assigned to MC, Inc.
  • Method of and system for extending internet telephony over virtual private network direct access lines
    Patent number: 6879680
    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.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: April 12, 2005
    Assignee: MC, Inc.
    Inventors: Steven R. Donovan, Matthew J. Cannon