The RTP Data Transfer Packet
Translators and Mixers
This chapter explains the RTP data transfer protocol, the means by which real-time media is exchanged. The discussion focuses on the “on-the-wire” aspects of RTP—that is, the packet formats and requirements for interoperability; the design of a system using RTP is explained in later chapters.
A session consists of a group of participants who are communicating using RTP. A participant may be active in multiple RTP sessions—for instance, one session for exchanging audio data and another session for exchanging video data. For each participant, the session is identified by a network address and port pair to which data should ...