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Forward Error Correction Grouping Semantics in Session Description Protocol

Document Type Replaced Internet-Draft (individual)
Expired & archived
Author Ali C. Begen
Last updated 2010-04-08 (Latest revision 2008-10-27)
Replaced by draft-ietf-mmusic-rfc4756bis
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-mmusic-rfc4756bis
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The Session Description Protocol (SDP) supports grouping media lines. SDP also has semantics defined for grouping the associated source and Forward Error Correction (FEC)-based repair flows. However, the semantics that were defined in RFC 4756 generally fail to provide the specific grouping relationships between the source and repair flows when there are more than one source and/or repair flows in the same group. Furthermore, the existing semantics also do not support additive repair flows and prioritization among the repair flows protecting one or more source flows. This document addresses these issues by introducing new FEC grouping semantics.


Ali C. Begen

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)