Source : Free On-Line Dictionary of Computing

Real Time Streaming Protocol
     
         (RTSP) An {application
        layer} {protocol} for controlling delivery of a {stream} of
        {real-time} {multimedia} content.  RTSP allows users to start
        playing from a certain position.  It does not actually deliver
        the data, but works alongside existing delivery channels such
        as {UDP}, {TCP}, or IP {multicast}.
     
        RTSP was developed by {RealNetworks}, {Netscape
        Communications}, and {Columbia University}, and is described
        in {RFC 2326}, April 1998.  RTSP is an {IETF} proposed
        {standard}.
     
        {FAQ
        (http://www.real.com/devzone/library/fireprot/rtsp/faq.html)}.
     
        (1999-08-26)