RTCP RTP Control Protocol
Rating: +4
RTP Control Protocol (RTCP) is a protocol related to RTP that allows participants in an RTP session to send each other quality reports and statistics it basically carries the control information related to a RTP session. RTCP offers periodic reporting of reception quality, participant identification and other source description information, notification on changes in session membership, and the information needed to synchronize media streams.
RTCP is also defined in IETF RFC 3550 along with RTP
There are five types of RTCP packets:
SR – a sender report this is sent by a participant that both sends and receives RTP packets
RR – a receiver report Sent by a participant that only receives RTP packets
SDES – source description items, contains information about the parties in the session
BYE – indicates end of participation.
APP – application-specific functions which are defined by a specific profile