RTP
The real-time protocol (RTP) is designed for the support of real-time traffic; that is, traffic that needs to be sent and received in a very short time period. Two real-time traffic examples are (a) audio conversations between two people, and (b) playing individual video frames at the receiver as they are received from the transmitter.
RTP is also an encapsulation protocol in that the real-time traffic runs in the data field of the RTP packet, and the RTP header contains information about the type of traffic that RTP is transporting. (While RTP can perform this function, not all multiservice applications will use RTP. Each IP telephony or video commercial product should be evaluated to determine the exact "protocol mix" in the offering). ...
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