NAT TRAVERSAL NETWORK HAVING A FUNCTION FOR IMMEDIATELY RETURNING TURN ALLOCATION AND CONTROLLING METHOD THEREFORE

摘要

PURPOSE: A network address translation traversal network system and a control method thereof are provided to considerably reduce the number of TURN Allocations to be managed in the same time period by immediately returning Allocation which is not used. CONSTITUTION: The client agent transmits a message including information about availability of allocated Allocation to the other part. A TURN server(3) registers individual information provided from the client agent. A rendezvous server(4) confirms whether or not Allocation is used by reading the middle of a message including the usage information of the allocated allocation which is transmitted from the client agent to the other party. The rendezvous server immediately requests returning of the Allocation of a TURN server according to a result.