This Recommendation defines the use of advanced video codecs, including ITU-T Rec. H.264, in H.310, H.320, H.321, H.322, H.323 and H.324 terminals. It also defines generic extended signalling for use with all video codecs in the H.300-series terminals.
ITU-T H.241-2005 history
2005ITU-T H.241-2005 Extended video procedures and control signals for H.300-series terminals Study Group 16