| 摘要 |
PROBLEM TO BE SOLVED: To enable writing from outside of a dwelling unit, even in a time when a resident is not in the dwelling unit.SOLUTION: Update program data included in a two-dimensional code, which is imaged by a camera 101 of an additional handset 1a at the front porch and read by a code reading section 106a, are written in a memory 107a of the handset and/or a memory 206a of a base unit 2a at a living room. Information indicating that writing operation of the update program data is being performed is displayed on a monitor 201 of the base unit at the living room, and an operation function of the operating section 200 of the base unit is disabled. A plurality two-dimensional codes including the update program data, for example, divided because of the large data size thereof, are combined at a code combination section 108a. In addition, a notice indicating that operation of writing the update program data is completed is given under control of a writing-completion notifying section 109a. |
