| 摘要 |
PROBLEM TO BE SOLVED: To provide a network system whose reliability can be improved, the control method and the registering method of a user in the network system. SOLUTION: The network system is provided with a telephone number registering means for registering in a server the telephone number of a terminal which is to receive prescribed service from the server, a telephone number acquiring means acquiring the telephone number of the terminal which is to receive service from a line, a telephone number comparing means for comparing the telephone number of the terminal which is acquired by the telephone number acquiring means with the telephone number registered in the registering means, and an authenticating means for authenticating data registered in the registration means in accordance with a comparison result by the telephone number comparing means. |
