| 摘要 |
A notification for notifying information about a mobile station capable of using international roaming service is provided. The notification system comprises an information storing unit that stores information about a mobile station which belongs to a first network in a first country, the information including a fact whether the mobile station is moved to a second country and registered as a visitor station in the second country or not; and a notification unit that refers to the information storing unit when the mobile station is called by a caller terminal within the first network to detect whether the mobile station is registered as the visitor station in the second country or not, and notifies the caller terminal of the registration of the mobile station before a connection between the caller terminal and the mobile station is established, when the mobile station is registered as the visitor station in the second country.
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