| 摘要 |
PROBLEM TO BE SOLVED: To make a single telephone set have two or more phone numbers selectively available for user's work and private time. SOLUTION: In masked phone services of a new method using a mask phone number of the user, as a key point, the 'masked phone service system' is a management system to be controlled by an original phone number of the member user or by a computer which imparts a substitutive dummy phone number. When a state of using the 'mask phone number' of the substitutive number is set, the telephone set is connected not only by the original phone number but also by the mask phone number and the state of using the 'mask phone number' is cut, the telephone set is connected only by the original phone number. COPYRIGHT: (C)2004,JPO
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