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Next: TCP Adaption Algorithms Up: Transport Protocols Previous: Introduction


The transport protocol for multimedia provides some functions that are somewhat different than those for elastic reliable data transfer, although some of the functions could be seen as analogous.

RTP provides payload identification, multiplexing, and feedback from receivers to senders of reception conditions. It also provides hooks for synchronisation, both within and between streams. There are requirements from some applications for soem levels of reliability - we have touched on these in chapter three, and revisit them at the end of this chapter.