Audio-video multi-participant conference systems using PSTN and internet networks

  • US 9,094,525 B2
  • Filed: 11/12/2012
  • Issued: 07/28/2015
  • Est. Priority Date: 03/10/2003
  • Status: Active Grant
First Claim
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1. A system for supporting a multi-participant conference call comprising:

  • a first mixer that mixes a Public Switched Telephone Network (PSTN) client audio data stream with a moderator audio-video data stream into a first mixed data stream;

    a first transport output that transmits the first mixed data stream to at least one remote client that receives the first mixed data stream, the at least one remote client communicatively coupled to the Internet, which generates a remote client audio-video data stream;

    a second mixer that mixes the moderator audio-video data stream with the remote client audio-video data stream into a second mixed data stream; and

    a second transport output that transmits a mixed audio data stream, corresponding to the second mixed data stream, to the PSTN client.

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