Right-of-way switching circuitry

Claim 1

IN A SWITCHING SYSTEM WHEREIN SWITCHING APPARATUS IS CONTROLLABLE TO EFFECT A RIGHT-OF-WAY CONNECTION TO A LINE TERMINATING IN SAID APPARATUS; MEANS OPERABLE TO VALIDATE THAT A RIGHT-OF-WAY CONNECTION TO SAID LINE IS TO BE EFFECTED; A FIRST TRANSMISSION GATE INDIVIDUAL TO THE LINE AND CONTROLLED BY THE LINE TO BE NONCONDUCTIVE TO INDICATE THAT THE LINE IS BUSY, AND TO BE CONDUCTIVE TO INDICATE THAT THE LINE IS IDLE; A FIRST FLIP-FLOP CONTROLLED TO BE IN A SET CONDITION WHENEVER THE LINE IS BUSY IN A RIGHT-OFWAY CONNECTION AND TO BE IN A RESET CONDITION WHENEVER THE LINE IS NOT BUSY IN A RIGHT-OF-WAY CONNECTION; APPLYING CIRCUITRY CONTROLLED BY SAID OPERATED VALIDATING MEANS AND BY SAID FLIP-FLOP TO APPLY A DISCONNECT SIGNAL TO THE LINE, SAID APPLYING MEANS INCLUDING SECOND AND THIRD TRANSMISSION GATES IN SERIES, SAID SECOND GATE CONTROLLED BY SAID FLIPFLOP TO BE NONCONDUCTIVE WHEN SAID FLIP-FLOP IS SET AND TO BE CONDUCTIVE WHEN SAID FLIP-FLOP IS RESET, SAID THIRD GATE CONTROLLED BY SAID VALIDATING MEANS TO BE CONDUCTIVE WHEN SAID VALIDATING MEANS IS OPERATED AND TO BE NONCONDUCTIVE AT OTHER TIMES; CIRCUIT MEANS CONTROLLED BY SAID FIRST TRANSMISSION GATE TO DESIGNATE THE LINE FOR CONNECTION WHEN THE LINE IS IDLE COMPRISING CIRCUITRY CONTROLLED ONLY WHEN SAID FIRST TRANSMISSION GATE IS CONDUCTIVE; AND, ENABLING MEANS CONTROLLED BY SAID OPERATED VALIDATING MEANS TO ENABLE SAID FIRST FLIP-FLOP TO BE SET TO SIGNIFY WHENEVER THE LINE IS BUSY IN A RIGHT-OF-WAY CONNECTION, SAID ENABLING MEANS COMPRISING A FOURTH TRANSMISSION GATE ALSO CONTROLLED BY SAID VALIDATING MEANS TO BE CONDUCTIVE WHEN SAID VALIDATING MEANS IS OPERATED AND TO BE NONCONDUCTIVE AT OTHER TIMES.