A number of personal conferencing systems, each executing a personal conferencing application, are networked together in a peer-to-peer manner. Each personal conferencing application is provided with a multi-point control logic for contributing to the shared control of audio as well as video distribution...http://www.google.fr/patents/US5828838?utm_source=gb-gplus-shareBrevet US5828838 - Method and apparatus for conducting multi-point electronic conferences
Method and apparatus for conducting multi-point electronic conferences
