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Universal/assigned night answering system for EPABX

  • US 4,028,499 A
  • Filed: 11/28/1975
  • Issued: 06/07/1977
  • Est. Priority Date: 11/28/1975
  • Status: Expired due to Term
First Claim
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1. In a telephone switching system having a plurality of incoming lines to be selectively coupled to selected ones of a plurality of telephone stations, said telephone stations having means for selectively producing dial signals, annunciator means responsive to a ringing signal on one of said plurality of incoming lines for indicating an active incoming line, register means responsive to an off-hook signal from a telephone station for producing answering mode signals, and means responsive to said register means for permitting interstation calls to be initiated between telephone stations not coupled to an incoming line, the improvement comprising:

  • coupling means responsive to said answering mode signals for directly coupling said off-hook telephone station to said active incoming line, said coupling means comprisingcounter means for producing in sequence m combinations of signals, where m is an integer equal to or greater than the number of incoming lines;

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