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Circuit arrangement for telecommunications exchanges - -, in particular telephone - waehlanlagen, in which the connection paths and / or connection switching members both by means of automatic of check as well as by manually operated testing equipment over toward the functional operability can be concurrently monitored
Circuit arrangement for telecommunications exchanges - -, in particular telephone - waehlanlagen, in which the connection paths and / or connection switching members both by means of automatic of check as well as by manually operated testing equipment over toward the functional operability can be concurrently monitored