Telephone system with electronic selection

Claim 1

AN AUTOMATIC TELEPHONE SWITCHING SYSTEM COMPRISING A PLURALITY OF SUBSCRIBER STATIONS, LINE CIRCUITS ASSOCIATED WITH EACH OF SAID STATIONS, REGISTER MEANS ASSOCIATED WITH A PLURALITY OF SAID LINE CIRCUITS, CONNECTION NETWORK MEANS COMPRISING A PLURALITY OF MULTI-SELECTOR SWITCHES PROVIDING A PLURALITY OF COMMUNICATION PATHS FOR LINKING CALLING ONES OF SAID SUBSCRIBER STATIONS TO CALLED ONES OF SAID SUBSCRIBER STATIONS, JUNCTOR MEANS CONSISTING OF RELAYS FOR INTERCONNETCING SAID MULTI-SELECTOR SWITCHES AND SIGNAL RELAYS FOR CONTROLLING SIGNALLING IN SAID CALLING AND CALLED SUBSCRIBER STATIONS, MARKING NETWORK MEANS HAVING A PLURALITY OF ANALOGOUS PATHS THAT CORRESPOND TO SAID COMMUNICATION PATHS, SAID MARKING NETWORK MEANS OPERATED RESPONSIVE TO DIRECTIVE SIGNALS FROM SAID CALLING STATION FOR MAKING SAID CALLING LINE CIRCUIT AND SAID CALLED LINE CIRCUIT, MEANS FOR TRANSMITING PILOT SIGNALS FROM SAID MARKED CALLING LINE CIRCUIT TOWARD SAID MARKED CALLED LINE CIRCUIT AND FROM SAID MARKED CALLED LINE CIRCUIT TOWARD SAID MARKED CALLING LINE CIRCUIT THROUGH ALL AVAILABLE ONES OF SAID CORRESPONDING PATHS, SELECTOR MEANS COMPRISING MEANS FOR PROGRESSIVELY BLOCKING A PART OF SAID AVAILABLE CORRESPONDING PATHS, SAID PROGRESSIVE BLOCKING LEAVING ONLY ONE CORRESPONDING PATH SELECTED, MEANS RESPONSIVE TO SAID SELECTION OF SAID CORRESPONDING PATH FOR SWITCHING THROUGH SAID CONNECTION MEANS TO LINK SAID CALLING STATION TO SAID CALLED STATION OVER A COMMUNICATION PATH ANALOGOUS TO SAID SELECTED CORRESPONDING PATH, SEQUENTIAL SWITCH MEANS COMPRISING A GROUP OF MEMORY MEANS ASSOCIATED WITH EACH JUNCTOR FOR INSTANTANEOUSLY INDICATING THE STATE OF OPERATION OF SAID ASSOCIATED JUNCTOR, AND LOGIC CIRCUIT MEANS COMMON TO GROUPS OF SAID JUNCTORS OPERATED RESPONSIVE TO SAID INDICATIONS FOR CONTROLLING SAID JUNCTORS AND SAID SEQUENTIAL SWITCH MEANS.