| 摘要 |
PROBLEM TO BE SOLVED: To prevent a connection that is not intended by an operator, during roaming. SOLUTION: There are provided a means which calculates a user's country time from operator information (country code, time difference) obtained by roaming authentication at a roaming destination and displays a warning screen, at the user's country time, when starting a speech; and a means which raises a warning against a non-intended connection from the roaming destination to a user's country service server on the basis of roaming information and prevents the connection. COPYRIGHT: (C)2009,JPO&INPIT
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