Session Description Protocol (SDP) Media Capabilities Negotiation. - Robert R. Gilman; Roni Even; Flemming Andreasen (RFC, 2013)

The Session Description Protocol (SDP) Alternate Connectivity (ALTC) Attribute. - Mohamed Boucadair; Hadriel Kaplan; Robert R. Gilman; Simo Veikkolainen (RFC, 2013)

Miscellaneous Capabilities Negotiation in the Session Description Protocol (SDP). - Miguel A. Garcia-Martin; Simo Veikkolainen; Robert R. Gilman (RFC, 2013)