Patent ID: 8667124

Claim:
A method for notifying a Real-Time Streaming Protocol (RTSP) event, comprising: monitoring by an RTSP event monitoring and notifying entity, an RTSP event state for an RTSP event, the RTSP event comprises at least transmission of real-time audio or video data streaming on demand; and sending by the RTSP event monitoring and notifying entity to an RTSP event state receiving entity, a notification indicative of a change of the RTSP event state upon detecting the change of the RTSP event state, so as to enable the RTSP event state receiving entity to update its RTSP event state to be consistent with the RTSP event monitoring and notifying entity, wherein if the RTSP event occurs at time of monitoring the RTSP event state, the notification carries the information about the occurrence of the RTSP event, and if the RTSP event occurs before start of monitoring the RTSP event state and the RTSP event state has changed, the notification carries the information about the changed state of the RTSP event.