SDPng is the short name for a successor of the Session Description Protocol (SDP, RFC 2327) developed by the MMUSIC WG. SDP has originally been designed for announcements of Mbone multimedia conferences. Its use has been expanded to include
As SDP was developed for a different purpose, it falls short in meeting a number of requirements that came up with these new uses. Numerous work-arounds, sometimes heavily bending SDP syntax and semantics, have been created.
Additional requirements came from the work on media packetization formats in the AVT WG: more complex descriptions for codecs, codec parameters, and packetization formats were needed in various places. And, finally, support for multiparty negotiation of capabilities is found useful.
These and other requirements have led to the idea to develop a successor to SDP — SDPng — that is capable to provide the necessary semantical expressiveness, syntactical structure, and prcoedures yet simple enough to allow easy implementation.
The development of SDPng is undertaken in the MMUSIC WG of the IETF and will address the perceived shortcomings of SDP.
The mmusic mailing should be used for SDPng discussion. Please refer to the mmusic charter page for subscribe information.
The following documents are taken into consideration as input. If you find anything missing on this list, please let me know.
MMUSIC WG / SIP WG
AVT WG
Other
Refer to the informal ftp site of SG 16 Q.12/13/14 for latest draft specifications related to the H.323 series of Recommendations.
Please do not ask me the Which documents are the latest ones? or similar questions. Please direct technical questions/discussions on the H.323 specs to the respective mailing list.
Also note that the T.120 group (SG 16 Q.3) is largely dormant at the moment.
And please note that final standards documents ("Recommendations") must be purchased from the ITU.
Please send additions/comments/suggestions to Jörg Ott and Dirk Kutscher.
Last edited: $Date: 2002/06/26 18:33:47 $