| 摘要 |
A line adjustment unit (10) is provided for connecting the alarm unit to a subscriber connection (30). This is arranged so that after the alarm detector (20) has emitted an alarm, an A-call up is produced through a function which corresponds to lifting a telephone receiver, and a telecommunication service of the direct ringing type. - A component (12) is incorporated for sending an alarm message to the subscriber connection when the B answer is received, in which the alarm message is transmitted to a B-subscriber. The A-call-up is made after a predetermined selectable time period, after the alarm detector has issued an alarm, making an adjustment possible during a time when the alarm has not commenced coupling-up. The alarm unit is automatically cut off after a predetermined number of calls with a B-response. |
