| 摘要 |
PURPOSE:To reply the request of an automobile telephone user by fixing in advance only one operation limit instruction of a function of a part of the automobile telephone set provided to a ROM in response to a selection instruction to be written in the ROM and selecting it by dial. CONSTITUTION:An instruction inhibiting the use of a specific function of the automobile telephone set depending on applications is stored in an ID-ROM 1. An instruction selecting one of operation limit instructions is written in a storage means 2. When the operation limit instruction desired to be selected exists in the ROM 1, it is selected by a 1st selection means 3. Only when the desired operation limit instruction does not exist, the propriety of the input code from a dial 11 of a telephone set 20 is discriminated by a discriminating means, and when it is correct, one of the operation limit instructions of the ROM 1 is selected by a 2nd selection means 5 by the selection instruction of the dial input. The instruction selected by selection means 3, 5 is stored in a RAM 6, the stored operation limit instruction is referenced and the limit means 7 limits the telephone function corresponding to the content of limit. Thus, the automobile telephone set used by the dialing is obtained by one kind of IRROM. |
