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Emergency call system for telegrams - has incoming emergency calls transferred to recorder to avoid engaging telephone lines if incoming call lines are busy
Emergency call system for telegrams - has incoming emergency calls transferred to recorder to avoid engaging telephone lines if incoming call lines are busy
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机译:用于电报的紧急呼叫系统-已将紧急呼叫转移到记录器,以避免在呼叫线路繁忙时接通电话线
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摘要
The emergency call system has numerous emergency call stations connected via the public telephone network to an emergency central station. The emergency calls are triggered by operating a sensor. The calling station automatically establishes a link with the central station and sends a data telegram to it. After the telegram has been received, a voice link is established between the two stations. If the operator at the central station is engaged, incoming calls are released -- i.e. they do not continue to hold telephone lines. A recorder records such calls made when the central station is engaged and displays their date at the central station.
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