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
UTF-8
RFC 2974 Session Announcement Protocol
SAP
Version 2?