WebRTC Multimedia Conferencing Solution
The architecture, protocols, and functionality of a WebRTC-enabled multimedia conferencing and collaboration solution. Learn about real-time communications, system implementation, security measures, and more to understand the innovation behind WebRTC technology.
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Presentation Transcript
WebRTC enabled multimedia conferencing and collaboration solution World Telecommunications Congress 2014 Adham Zeidan, Armin Lehmann, Ulrich Trick Research Group for Telecommunication Networks, University of Applied Science Frankfurt am Main, Germany 1
Outline What is WebRTC System architecture and protocols Detailed system functionality and architecture Application and services 2
What is WebRTC Real-time communications(RTC) into web browsers without any software or plugin W3C defining the APIs needed for the JavaScript IETF developing the protocols used by the browser RTC function W3C Word Wide Web Consortium IETF Internet Engineering Task Force 3
System architecture and Protocols Videoconferencing architecture Focus used to control mixer and provides a logical function Mixer receive RTP packets, combine the packets and redistributes new RTP packets 4
Session Initiation Protocol (SIP) Standardized by IETF, mainly specified in RFC 3261 Session-layer signaling protocol used for initiation and control of Multimedia over IP sessions WebSockets Enables message exchange between clients and server on top of a persistent TCP connections Most of the browser support WebSocket hence it is used in WebRTC 5
WebRTC over SIP and WebSockets SRTP Secure Real-Time Transport Protocol STUN Session Traversal Utilities for NAT TURN Traversal Using Relay around NAT Picture Source 6
Detailed system functionality and architecture Multipoint Control Unit 7
Security Signalling part Transport Layer Security protocol (TLS) Transfer SIP message WebSocket Secure protocol (WSS) Media flow between media server and SIP UA and SIP WebRTC clients Secure Real-Time Transport Protocol (SRTP) Web management interface HyperText Transfer Protocol Secure (HTTPS) 9
Application and services Multiple videoconferencing sessions Voice Activity Detection(VAD) Live Web broadcasting WebRTC support Live documents and slide presentation Virtual Whiteboard Zooming 10
