| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To effectively prevent information leakage from a communication node such as a cellular phone. <P>SOLUTION: An actual telephone number of a call termination destination is not registered in an address book of a cellular phone 2, but a telephone number code attached arbitrarily corresponding to the actual telephone number and information necessary for telephone number selection are registered. Respective actual telephone numbers of the cellular phones 2, the telephone number code of the call termination destination and the information of the call termination destination are associated with one another and registered in an address book of an address management server 4. When a cellular phone 2 of a calling source makes a call to the cellular phone 2 of the call termination destination, the actual telephone number of the calling source and the telephone number code of the call termination destination are transmitted from the calling source to the address management server 4, the telephone number of the call termination destination is retrieved, and the actual telephone number of the call termination destination is obtained. This telephone number is used, and a speech communication path is connected between the calling source and the call termination destination. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
