http://www.rfc-editor.org/rfc/rfc5577.txt
RFC 5577: RTP Payload Format for ITU-T Recommendation G.722.1, P. Luthi, R. Even2009-07-01T23:00:00-00:00International Telecommunication Union (ITU-T) Recommendation G.722.1 is a wide-band audio codec. This document describes the payload format for including G.722.1-generated bit streams within an RTP packet. The document also describes the syntax and semantics of the Session Description Protocol (SDP) parameters needed to support G.722.1 audio codec. [STANDARDS-TRACK]