http://www.rfc-editor.org/rfc/rfc1890.txt
RFC 1890: RTP Profile for Audio and Video Conferences with Minimal Control, , H. Schulzrinne1996-01-01T23:00:00-00:00This memo describes a profile for the use of the real-time transport protocol (RTP), version 2, and the associated control protocol, RTCP, within audio and video multiparticipant conferences with minimal control. [STANDARDS-TRACK]