Call forwarding arrangement

Claim 1

IN AN AUTOMATIC TELEPHONE EXCHANGE HAVING A PLURALITY OF SUBSCRIBERS'' LINES HAVING STATIONS THEREON, AUTOMATIC SWITCHING APPARATUS FOR SETTING UP CONNECTIONS BETWEEN THE LINES, CALL FORWARDING APPARATUS INCLUDING A REGISTER INDIVIDUALLY AND DIRECTLY CONNECTED TO ONE OF SAID LINES ARRANGED SO THAT WHEN THE REGISTER IS SET AND SAID ONE LINE IS IDLE CALLS DIRECTED TO SAID ONE LINE ARE FORWARDED TO THE STATION DESIGNATED BY THE SETTING OF THE REGISTER, MEANS FOR SETTING THE REGISTER INCLUDING AUXILIARY SWITCHING APPARATUS FOR ESTABLISHING A CONNECTION FROM A CALLING ONE OF SAID LINES TO SAID CALL FORWARDING APPARATUS AND FOR ASSOCIATING THE CONNECTION WITH SAID REGISTER, TESTING MEANS WHICH IN RESPONSE TO THE CALLING LINE BEING EITHER SAID ONE LINE INDIVIDUAL TO THE REGISTER OR A LINE TO WHICH THE REGISTER HAS BEEN SET FOR INDICATING AN AUTHORIZED CONNECTION AND FOR PERMITTING THE REGISTER TO BE SELECTIVELY CONTROLLED AND SET IN RESPONSE TO SIGNALS FROM THE CALLING LINE; SAID TESTING MEANS BEING OPERATIVE IN RESPONSE TO THE CONNECTON BEING FROM ANY OTHER LINE FOR INDICATING AN UNAUTHORIZED CONNECTION AND FOR PREVENTING CONTROL OF THE REGISTER; WHEREBY A REGISTER CAN BE SET TO ANOTHER ONE OF SAID NUMBER OF THE OTHER LINES OR ONE LINE INDIVIDUAL TO THE REGISTER IN ACCORDANCE WITH SAID SIGNALS.