| 摘要 |
A communication control module of a navigation apparatus determines that a short message that a communication module has received is from a mobile telephone that corresponds to identification data stored in advance in a RAM, and outputs a remote operation signal to a power source module. The navigation module acquires the IP address of the navigation apparatus when switched from a sleep mode to a wake-up mode, and after generating a mail that contains this acquired IP address, sends this mail to the mobile telephone that sent the activation data by using the mail address of this mobile telephone. Therefore, even when a new IP address is assigned to the navigation apparatus each time the navigation apparatus is activated, it is possible to remotely control the navigation apparatus easily from a remote site.
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