VOIP (Voice Over IP)

Real-time communications on the internet has been on the rise in the recent past. Many companies are offering video conferencing solutions for social as well as enterprise users. Real-time communications are powered by VOIP (Voice Over IP) protocols. VOIP protocols include;

• Session Initiation Protocol (SIP), connection management protocol developed by the IETF

• Real-time Transport Protocol (RTP), transport protocol for real-time audio and video data

• Real-time Transport Control Protocol (RTCP), sister protocol for RTP providing stream statistics and status information

• Secure Real-time Transport Protocol (SRTP), encrypted version of RTP

• Session Description Protocol (SDP), a syntax for session initiation and announcement for multimedia communications and WebSocket transports.