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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
Standard Electrica SA
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Filing date
Publication date
Priority claimed from FR916895Aexternal-prioritypatent/FR1382913A/en
Application filed by Alcatel Espana SA, Standard Electrica SAfiledCriticalAlcatel Espana SA
Publication of ES293793A1publicationCriticalpatent/ES293793A1/en
Improvements in telephone switching systems comprising a number of groups of intersection point matrices, said groups being cascaded to extend from input terminals on an input side to output terminals on an output side of said system, circuitry operable in response to dialing signals applied to selected ones of said input and output terminals, for selecting a circuit available through said system, said circuit selecting means comprising nodes representing each of said matrices with upper nodes representing matrices connected to input terminals and lower nodes representing arrays not connected to input terminals, means in said circuit selecting means actuated in response to said dialing signals to mark all available ones of the nodes in the circuits between said marked input and All output terminals dis wearable and control means for sequentially selecting and identifying a particular of said nodes commenting with the selected lower node connected to said marked output terminal and ending with the upper node connected to said marked input terminal, to select an analog circuit through said matrices of points of intersection. (Machine-translation by Google Translate, not legally binding)
ES0293793A1962-11-281963-11-23Improvements in telephone switching systems (Machine-translation by Google Translate, not legally binding)
ExpiredES293793A1
(en)
Circuit arrangement for the selection of connection paths in multi-level switching matrices in telecommunication systems, in particular telephone systems
Method and circuit arrangement for central monitoring of time measuring circuits for several functional units in telecommunication systems, in particular telephone exchange systems.
Circuit device for telecommunication and particularly for telephone switching systems with functioning in multiplex of division in time. (Machine-translation by Google Translate, not legally binding)