(RTSP) An {application layer} {protocol} for controlling delivery of a {stream} of real-timemultimedia 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)