In this paper

the fluid-flow approximation method is introduced to analyse the performance of a packet video/voice/data integration communication system. At first

fluid -flow method is used to analyse the queueing performance of the pre-emptive priority packet video/voice queueing subsystem. Then the queueing behavior of the lower priority data queue-ing subsystem is developed. We find out that the analytical results agree well with the simulation result and are accurate enough to meet the needs of engineering purposes. The analytical procedure is very simple and it’s easy to get the numerical results.