This document describes a header compression scheme for point to point links with packet loss and long delays. It is based on Compressed Real-time Transport Protocol (CRTP)@ the IP/UDP/RTP header compression described in RFC 2508. CRTP does not perform well on such links: packet loss results in context corruption and due to the long delay@ many more packets are discarded before the context is repaired. To correct the behavior of CRTP over such links@ a few extensions to the protocol are specified here. The extensions aim to reduce context corruption by changing the way the compressor updates the context at the decompressor: updates are repeated and include updates to full and differential context parameters. With these extensions@ CRTP performs well over links with packet loss@ packet reordering and long delays.
RFC 3545-2003 history
2003RFC 3545-2003 Enhanced Compressed RTP (CRTP) for Links with High Delay@ Packet Loss and Reordering