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Authorization and authentication is possible both with the use of the internal user base and with the use of external systems: 1) LDAP/ADS via Apache Directory LDAP API 2) Google/Facebook/VK and others via OAUTH.
Audio/Video streams are transferred under Red5 server via stack of protocols: RTMP, RTMPT for bypassing firewalls, RTMPS for secure connection.
VOD (Video On Demand) is used for viewing of meetings records and media files, and is implemented by means of HTML5 / Wicket.