Alarm system with interconnected alarm terminals
First Claim
1. An alarm installation comprisinga central alarm station andat least one alarm unit, which is placed at a location which is to be monitored, andseveral alarm terminals, which are placed at a number of monitoring locations or turn-out response locations,connection lines between both the alarm unit and the central alarm station, and between the central alarm station and the alarm terminals,characterized bymeans in the central alarm station for, upon reception of an alarm from the alarm unit through the connection lines, transmitting information thereof to alarm terminals, andmeans in the central alarm station for, after the transmission of such information to alarm terminals, establishing interconnections between each one of these alarm terminals in order to transfer information between the alarm terminals.
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Accused Products
Abstract
An alarm installation comprises a central alarm station and a number of alarm units. The alarm units can send messages to the central alarm station and the central alarm station can send messages such as voice messages or recorded spoken messages to a number of alert units. All sending and receiving operations are preferably performed on the public telephone network. The alarm units contain at least one operating device and/or detector for an emergency situiation and will at the activation of such a device or detector send a message thereof to the central alarm station. The latter receives the message and will send a corresponding message, e.g. in the shape of a spoken message, to the different alert places. These different alert places can then be interconnected by the central alrm station in order to interchange information in regard of suitable measures to be made.
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Citations
10 Claims
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1. An alarm installation comprising
a central alarm station and at least one alarm unit, which is placed at a location which is to be monitored, and several alarm terminals, which are placed at a number of monitoring locations or turn-out response locations, connection lines between both the alarm unit and the central alarm station, and between the central alarm station and the alarm terminals, characterized by means in the central alarm station for, upon reception of an alarm from the alarm unit through the connection lines, transmitting information thereof to alarm terminals, and means in the central alarm station for, after the transmission of such information to alarm terminals, establishing interconnections between each one of these alarm terminals in order to transfer information between the alarm terminals.
Specification