Media Based Collaboration Using Mixed-Mode PSTN and Internet Networks

  • US 20110043601A1
  • Filed: 12/23/2009
  • Published: 02/24/2011
  • Est. Priority Date: 03/10/2003
  • Status: Active Grant
First Claim
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1. A method for adding a telephone participant to a multi-participant video conference, comprising:

  • sending a first message to each of a plurality of multicast appliances over the Internet, wherein the first message comprises a group address which identifies participants;

    each of the multicast appliances receiving the first message;

    establishing a plurality of virtual private networks across the Internet between the multicast appliances;

    wherein one or more of the participants are able to communicate in the multi- participant video conference;

    the telephone participant joining the multi-participant video conference, wherein said joining comprises;

    a first participant contacting the telephone participant establishing a phone number with a voIP server;

    the VoIP server communicating with a gateway to call the telephone participant;

    the telephone participant participating in the multi-participant video conference.

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