To provide a means which enables a client to find the waiting time for processing of a transaction corresponding to a service when accessing a service site in real-time audio-visual communication through a network.

A service network system 1 in real-time audio-visual communication is constituted by connecting a client terminal device 2, a communication server device 3, and a service provider terminal device 4 through a network 5. In the case that the client terminal device 2 waits for the completion of processing when requesting the service because windows of real-time processing in the communication processing server device 3 are in the middle of processing for another client terminal devices, the number x of windows, the number m of transactions waiting for processing, a place n in a processing queue of the client terminal device 2 are reported to the client terminal device 2.