Real-Time Transport Protocol (RTP)

RTP is a protocol that defines how devices on an IP network transmit and receive real-time media, such as ▲VoIP systems and ▲IP-based ▲videoconferencing systems. RTP is defined in RFC 3550 and "profiles", which specify how to packetize various audio and video ▲codecs used in an RTP session, are defined in RFC 3551.

RTP is used as the means to transmit audio, video, and text information within ▲H.323, ▲SIP, ▲H.248, and ▲MGCP.