METHOD FOR ACQUIRING TELEPHONE NUMBER INFORMATION AND E-MAIL ADDRESS INFORMATION, AND SYSTEM FOR PROVIDING TELEPHONE NUMBER INFORMATION AND E-MAIL ADDRESS INFORMATION

摘要

PROBLEM TO BE SOLVED: To provide a technology capable of easily acquiring telephone number information and e-mail address information in a desired name/title. SOLUTION: One database 110 including telephone number information and e-mail address information of respective prefectures is constructed, and a portable telephone set 102 accesses the database 110 through a communication line and acquires desired telephone number information and e-mail address information stored in the database 110.