The following publications are possibly variants of this publication:
- Security Preconditions for Session Description Protocol (SDP) Media StreamsFlemming Andreasen, Dan Wing. rfc, 5027:1-16, October 2007. [doi]
- Connectivity Preconditions for Session Description Protocol (SDP) Media StreamsFlemming Andreasen, Gonzalo Camarillo, David Oran, Dan Wing. rfc, 5898:1-17, July 2010. [doi]
- Session Description Protocol (SDP) Media Capabilities NegotiationRobert R. Gilman, Roni Even, Flemming Andreasen. rfc, 6871:1-55, February 2013. [doi]