| 摘要 |
The present invention relates to a method for controlling an accessory of a location data maintaining subscriber terminal equipment (204) of a cellular network and an accessory (214), and which comprises memory (202, 210) for maintaining a specified subscriber identifier differing from the identifier of the subscriber terminal equipment, and circuitry (206) for connecting to the terminal equipment. In order to enable reliable checking of location data, the combination of the terminal equipment and the accessory comprises processor circuitry (200, 204, 210) for determining its location in connection with activation, memory (210) for storing location parameters, processor with memory circuit (200, 210) for checking its location whenever a call is established when the terminal equipment is connected to the accessory, wherein the processor compares the checked location with the stored location data, and obstructs the use of the subscriber identifier during the call in case the location data differ from one another more than the preset threshold value. |
