| 摘要 |
PROBLEM TO BE SOLVED: To improve a data communication processing system by retrieving a destination address and destination and transmission origin port numbers from a table to which a mapping method from TCP/IP to an ATM protocol, a traffic parameter and a QoS parameter are set, performing transmission by the mapping method and additionally updating the table at the time of reception. SOLUTION: When a data transfer request is generated from an application 11 and a destination IP address and the destination port number of a destination application are specified, a TCP/IP protocol stack 12 makes an ATM interface driver 14 retrieve a communication environment management table from specification and the transmission origin port number. By using the mapping method selected by it, the IP datagram of the processing, the traffic and the QoS parameter, the driver 14 performs prescribed communication. Also, at the time of a connection opening request from another station or data reception, the table is additionally updated. Thus, the communication processing is improved.
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