NETWORK INFORMATION SETTING METHOD, NETWORK SYSTEM AND COMMUNICATION TERMINAL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a network information setting method, a network system and a communication terminal device that enables the safe and autonomous setup of equipment connected to a control network. SOLUTION: The network information setting method which, when the communication terminal device is connected to the control network to which a first server for storing key information and a second server for storing attribute information are connected, initializes attribute information about the communication terminal device in the second server, acquires key information necessary for security communication with the second server from the first server, and sends the attribute information at least including an identifier and a network address of the communication terminal device to the second server by security communication using the key information. COPYRIGHT: (C)2005,JPO&NCIPI