Data communication system and method

摘要

A data communication system which sends or receives data to or from an application server using the same protocol via a transmission line as one of a wire communication network, a wireless communication network, and both a wire communication network and a wireless communication network, comprises a table 14 containing therein a relation among a service identifier of the application server, a destination address, a communication network type, and a processing time of the application server; and a retransmission timer setting unit 16 which references the table to obtain the processing time of the application server based on the service identifier, destination address, and communication network type during transmission or reception of data to or from the application server, and sets the time as a retransmission time.