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SRTP

(Secure RTP) See RTP.



RTP

(1) (Rapid Transport Protocol) The protocol used in IBM's High Performance Routing (HPR) system.

(2) (Realtime Transport Protocol) An IP protocol that supports real-time transmission of voice and video. It is widely used for IP telephony and audio and video streaming. An RTP packet rides on top of UDP, the non-reliable counterpart of TCP, and includes timestamping and synchronization information in its header for proper reassembly at the receiving end. Secure RTP (SRTP) is a version of RTP that provides confidentiality and message authentication.

RTCP (Real Time Control Protocol)
RTCP is a companion protocol to RTP that is used to maintain QoS. RTP nodes analyze network conditions and periodically send each other RTCP packets that report on network congestion.

RTSP (Real Time Streaming Protocol)
RTSP is used to control an RTP session at the application layer. It enables functions such as pause, rewind and fast forward to be provided in the user's client software. See IP telephony, RSVP and UDP.




RTP Packet
In a UDP/IP stack, the RTP header is created first and then the packet is moved down the stack to UDP and IP. This shows the RTP packet within an Ethernet frame ready for transmission over the network.






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