Integrated two-and four-wire telephone switching system

Claim 1

IN A CALL DATA RECORDING TELEPHONE SYSTEM, A SWITCHING CENTER COMPRISING A FIRST SWITCHING NETWORK SERVING A PLURALITY OF UNIQUELY IDENTIFIABLE TWO-WIRE STATIONS AND A PLURALITY OF UNIQUELY INDENTIFIABLE TWO-WIRE TRUNKS AND COMPRISING MEANS FOR SELECTIVELY INTERCONNECTING SAID TWOWIRE STATIONS AND SAID TWO-WIRE TRUNKS; A SECOND SWITCHING NETWORK SERVING A PLURALITY OF UNIQUELY IDENTIFIABLE FOUR-WIRE STATIONS AND A PLURALITY OF UNIQUELY IDENTIFIABLE FOUR-WIRE TRUNKS AND COMPRISING MEANS FOR SELECTIVELY INTERCONNECTING SAID FOUR-WIRE STATIONS AND SAID FOUR-WIRE TRUNKS, EACH OF SAID NETWORKS COMPRISING MEANS FOR PROVIDING CALL INFORMATION SIGNALS INCLUDING SIGNALS INDICATING THE INDENTITY OF THE ONE OF SAID TWO-WIRE STATIONS, FOURWIRE STATIONS, AND FOUR-WIRE TRUNKS WHICH REQUESTED A CALL CONNECTION; RECORDING MEANS; AND A RECORDER CONTROLLER COMPRISING REGISTER MEANS FOR REGISTERING SAID CALL INFORMATION SIGNALS, DETECTION MEANS SELECTIVELY RESPONSIVE TO SAID REGISTERED CALL INFORMATION FOR CONTROLLING SAID RECORDING MEANS TO RECORD DATA PERTAINING TO A CALL FOR WHICH A CALL CONNECTION IS REQUESTED BY ONE OF SAID TWO-WIRE STATIONS AND INCLUDING IDENTIFICATION OF SAID ONE OF SAID TWO-WIRE STATIONS, DATA PERTAINING TO A CALL FOR WHICH A CALL CONNECTION IS REQUESTED BY ONE OF SAID FOURWIRE TRUNKS, WHICH CONNECTION EXTENDS TO ANOTHER OF SAID FOUR-WIRE TRUNKS AND INCLUDING IDENTIFICATION OF SAID REQUESTING ONE OF SAID FOUR-WIRE TRUNKS.