Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Western Electric Co IncfiledCriticalWestern Electric Co Inc
Priority to ES0305310ApriorityCriticalpatent/ES305310A1/en
Publication of ES305310A1publicationCriticalpatent/ES305310A1/en
Communication switch system for telephones, comprising a plurality of communication line circuits, a switching network for selectively interconnecting communications line circuits, and a control device, characterized in that each of the communication line circuits comprises a plurality of sensitive circuits and a plurality of control elements, the states of the control elements determining a plurality of different control transmission configuration states, of the communication line circuits; and the control device responds to the output signals of the sensitive circuits and is arranged to generate signals to selectively control the control elements of the communication line circuits, the control elements being sensitive only to the control signals. (Machine-translation by Google Translate, not legally binding)
ES0305310A1964-10-151964-10-15Telephone communications switching system. (Machine-translation by Google Translate, not legally binding)
ExpiredES305310A1
(en)
Circuit provision for telecommunication link installations, particularly for telephone installations with coupling fields. (Machine-translation by Google Translate, not legally binding)
Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with switching switching devices designed for two-wire through-connections
A circuit provision for telecommunication switching installations, especially for telephone installations. (Machine-translation by Google Translate, not legally binding)