DATA COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To enhance the signal efficiency in communication between networks whose protocols are different from each other. SOLUTION: Routing is conducted between a mobile terminal 1 and a gateway 2 by path selection processing in a mobile communication network, and transport connection is set between the both. When setting of a transport layer TL is finished, data of an application layer AL are sent from the mobile terminal 1 to the gateway 2. The data from the mobile terminal 1 are tentatively buffered in the gateway 2. Then the gateway 2 sends a transport connection setting request signal to other network and receives a transport connection answer signal from the other network. Thus, the connection between the both networks is set. Then the gateway 2 sends the application data buffered to the other network.