A method and system for setting up and managing secure data/audio/video conferences with a wide range of topologies is described. The disclosed method and system allow extending the range of topologies possible with the H.323 conferencing standards while overcoming T.120 negotiating constraints. Security...http://www.google.com/patents/US20050094581?utm_source=gb-gplus-sharePatent US20050094581 - Security and support for flexible conferencing topologies spanning proxies, firewalls and gateways
