| 摘要 |
PROBLEM TO BE SOLVED: To perform the valid period setting of an automatic answering telephone message and the already-read/non-read confirmation of the automatic answering telephone message to a mobile telephone user by making a message caller optionally set the management condition of the automatic answering telephone message in an automatic answering telephone service. SOLUTION: The management condition of the automatic answering telephone message handled by the automatic answering telephone service is optionally set by the message caller. For instance, in the case of calling the mobile telephone user or the like present on the outside of the service area of a base station 12, the caller 14 carrying a mobile telephone set 11 registers the automatic answering telephone message to an automatic answering telephone center 13. Corresponding to the guidance of the automatic answering telephone center 13, the valid period of the automatic answering telephone message is set. Also, in the case of confirming the already-read/non-read of the registered message to a certain opposite party, the caller 14 obtains already-read/non-read information by transmitting the opposite party telephone number of the registered message to the automatic answering telephone center 13.
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