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RTP Interoperability Testing

This document discusses the current state of interoperability testing for the RTP protocol as outlined in RFC 2026, which necessitates "two independent and interoperable implementations" to elevate a protocol to draft standard status. The status of basic and advanced RTP features, as well as profile features, is summarized. Key aspects include basic RTP use cases, encryption protocols, RTCP algorithms, and codec specifications. Your assistance in this critical phase of testing is highly requested to facilitate progress.

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RTP Interoperability Testing

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  1. RTP Interoperability Testing Colin PerkinsUniversity College London

  2. The need • RFC 2026 states that “two independent and interoperable implementations” of every feature are needed to advance a protocol to draft standard. • We are at this stage with RTP.

  3. Interop testing Three drafts describe the interop testing: • draft-ietf-avt-rtp-interop-02.txt • draft-ietf-avt-profile-interop-00.txt • draft-ietf-avt-rtptest-02.txt with a web page showing the status • http://www-mice.cs.ucl.ac.uk/multimedia/misc/avt/RTPinterop/

  4. Status: basic RTP • Use of padding • Use of header extension • SDES PHONE/LOC/PRIV • BYE with multiple SSRC/reason text • APP packets • Encryption

  5. Status: advanced RTP • RTCP reconsideration algorithms and step join back-off • SSRC collision/loop detection

  6. Status: profile features • Modification of RTCP bandwidth fraction • Transport using TCP

  7. 1016 G.726-32 G.723 G.722 QCELP G.728 G.729 GSM HR/EFR PCMA CellB JPEG MPT MP1S MP2P BMPEG H.263/H.263+ BT.656 Status: codecs

  8. A plea for help... Your help is needed!

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