Call number indicating circuits

Claim 1

A CIRCUIT ARRANGEMENT FOR INDICATING THE CALL NUMBERS OF SUBSCRIBER LINES IN TELEPHONE EXCHANGES IN WHICH CONNECTIONS ARE ESTABLISHED FROM SAID SUBSCRIBER LINES TO AVAILABLE LINKS THROUGH SEVERAL SWITCHING STAGES BY MEANS OF STAGE MARKERS AND GROUP MARKERS USING CONTROL SIGNALS ON GUIDE WIRES, MEANS RESPONSIVE TO AN OFF-HOOK CONDITION OF A CALLING ONE OF SAID SUBSCRIBER LINES FOR INITIATING A START SIGNAL, MEANS FOR TRANSMITTING SAID START SIGNAL TO SAID GUIDE WIRES, START SIGNAL REGENERATING MEANS IN SAID SWITCHING STAGES FOR TRANSMITTING REGENERATED START SIGNALS TO AN AVAILABLE LINK AND FOR SEIZING ONE OF SAID STAGE MARKERS, SELECTING CHAIN MEANS IN SAID STAGE MARKER FOR SELECTING A DESIGNATED ONE OF SAID GUIDE WIRES FOR MARKING SAID CALLING LINE CIRCUIT, CROSSPOINT RELAY MEANS OPERATED RESPONSIVE TO THE OPERATION OF SAID SELECTING CHAIN FOR CONNECTING SAID CALLING LINE CIRCUIT THROUGH SAID SWITCHING STAGES TO SAID AVAILABLE LINK, MEANS OPERATED RESPONSIVE TO SAID CUTTHROUGH FOR DROPPING SAID STAGE MARKER, MEANS FOR CONNECTING AN INDICATING DEVICE BETWEEN A GROUP MARKER CONTROLLING THE SIGNALS ON THE SELECTED GUIDE WIRE AND THE AVAILABLE LINK, MEANS IN SAID INDICATING DEVICE FOR CAUSING THE INITIATION OF A START SIGNAL IN ORDER TO RESEIZE THE STAGE MARKER, SAID INITIATION MEANS COMPRISING MEANS FOR SIMULATING THE START SIGNAL TRANSMITTED INITIALLY, BLOCKING MEANS UNDER THE CONTROL OF SAID INDICATING DEVICE FOR PREVENTING THE GROUP MARKER FROM ESTABLISHING A CALL THROUGH OTHER SUBSCRIBER LINES, MEANS RESPONSIVE TO THE RESEIZING OF SAID STAGE MARKER TO ONE OF SAID SEVERAL SWITCHING STAGES FOR IDENTIFYING THE CALLING SUBSCRIBER LINE COMPRISING TRANSLATOR MEANS FOR PROVIDING SUBSCRIBER NUMBERS AND MEANS RESPONSIVE TO THE IDENTIFICATION OF THE CALLING SUBSCRIBER LINE BY THE STAGE MARKER FOR CAUSING SAID TRANSLATOR TO TRANSMIT THE CALLING SUBSCRIBER NUMBER TO THE INDICATING DEVICE.