SDP
RFC 8866 SDP: Session Description Protocol
https://tex2e.github.io/rfc-translater/html/rfc8866.html
RFC 4566 SDP: Session Description Protocol (廃止)
https://tex2e.github.io/rfc-translater/html/rfc4566.html
RFC 2327 SDP: Session Description Protocol (廃止)
https://tex2e.github.io/rfc-translater/html/rfc2327.html
RFC 3266 (廃止) Support for IPv6 in Session Description Protocol (SDP) → 4566
RFC 3264 An Offer/Answer Model with the Session Description Protocol (SDP)
RFC 2543
UTF-8
RFC 2974 Session Announcement Protocol SAP Version 2?