| 摘要 |
PURPOSE:To confirm the operation of a unit by the telephone from the external with a simple constitution, by opening the main wire temporarily by a main wire circuit part and by acquiring the main wire after a fixed time, when the remote signal is detected by the remote signal detecting part. CONSTITUTION:Control part CONT connected to sensor S or an emergency report button, telephone set TEL, and main wire circuit part OWC which is connected to main wire L to detect called subscriber response and incoming and acquires and opens main wire L are provided. Incoming dependent upon automatic dial is detected by circuit OWC and is reported to control part CONT, and main wire acquisition signal (a) is sent to circuit OWC to acquire main wire L. Control part CONT sends channel control signal (b) and driving signal (c) to message transmission part MS, and the automatic response message is transmitted from plural channels by transmission part MS; and when remote signal (d) is transmitted from the calling side, it is detected by remote signal detecting part RSD, and main wire L is opened temporarily in circuit part OWC by main wire opening signal (f), and main wire L is acquired after a fixed time. |
