A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Duplication Grouping Semantics in the Session Description Protocol Author(s) : Ali Begen Yiqun Cai Heidi Ou Filename : draft-begen-mmusic-redundancy-grouping-01.txt Pages : 13 Date : 2011-06-12 Packet loss is undesirable for real-time multimedia sessions, but it is not avoidable due to congestion or other unplanned network outages. This is especially the case for IP multicast networks. One technique to recover from packet loss without incurring unbounded delay for all the receivers is to duplicate the packets and send them in separate redundant streams. This document defines the semantics for grouping redundant streams in the Session Description Protocol (SDP). The semantics defined in this document are to be used with the SDP Grouping Framework [RFC5888]. SSRC-level (Synchronization Source) grouping semantics are also defined in this document for RTP streams using SSRC multiplexing. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-begen-mmusic-redundancy-grouping-01.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ This Internet-Draft can be retrieved at: ftp://ftp.ietf.org/internet-drafts/draft-begen-mmusic-redundancy-grouping-01.txt _______________________________________________ I-D-Announce mailing list I-D-Announce@ietf.org https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt