WebRTC enabled multimedia conferencing and collaboration solution

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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

Outline What is WebRTC System architecture and protocols Detailed system functionality and architecture Application and services

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

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

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

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

Detailed system functionality and architecture Multipoint Control Unit

System Implementation

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)

Application and services Multiple videoconferencing sessions Voice Activity Detection(VAD) Live Web broadcasting WebRTC support Live documents and slide presentation Virtual Whiteboard Zooming