COMMUNICATION ESTABLISHMENT SYSTEM

To provide a system for establishing communication that enables reduction of time to establishment of inter-terminal communication and reduces load on server during processing for establishing communication between host terminal and client terminal, during inter-terminal communication after establishment of communication and during reconnection processing.Means for Solving the ProblemA system for establishing communication comprising a host terminal, at least one client terminal, and a server that mediates their communication, wherein the host terminal comprises host side communication request means for sending host terminal information to the server and host side management means for managing client terminal information of individual client terminals, and the client terminal comprises client side communication request means for sending client terminal information to the host terminal and client side management means for managing host terminal information, which system is configured so that, after the host terminal makes a direct session start request to the client terminal based on the client terminal information received from the client terminal, communication is established between the host terminal and the client terminal.