| 摘要 |
PURPOSE:To prevent illegal use of a telephone line from a 3rd party. CONSTITUTION:The system using the telephone set consists of at least one stationary station and one or plural mobile stations. An ID erasure command transmission means 8 provided to the stationary station sends an ID erasure command to the mobile station and the mobile station receiving the ID erasure command uses an ID code erasure means 17, deletes the ID code stored in an ID code storage circuit. That is, the ID code of the mobile station is deleted by radio communication from the stationary station. |
