ITU
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... International Telecommunications Union, "A far end camera control protocol for videoconferences using H.224", ITU- T Recommendation H.281, November 1994. ...
... International Telecommunications Union, "A real time control protocol for simplex applications using the H.221 LSD/HSD/HLP channels.", ITU-T Recommendation H.224, February 2000. ...
... telephone systems and equipment for local area networks which provide a non-guaranteed quality of service", ITU-T Recommendation H.323, July 2003. ...