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Method and apparatus for providing virtual facility communication service

  • US 4,802,199 A
  • Filed: 06/22/1987
  • Issued: 01/31/1989
  • Est. Priority Date: 06/22/1987
  • Status: Expired due to Term
First Claim
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1. A private communication system including a common controller connected over a communication facility to a switching office and connected over a communication loop to a station set, said common controller comprisingmeans for receiving a predetermined signal preceding a called party signal from a user at said station set,means for accessing a virtual facility table using said predetermined signal to obtain a virtual facility number to establish a connection between said communication system and a second private communication system via said switching office, said virtual facility number including an intersystem dialing signal and a predefined code identifying the position where said calling party signal should be inserted within said virtual facility number, andmeans for sending to said switching office a composite dialing signal including said intersystem dialing signal and said called party dialing signal wherein said called party dialing signal is positioned in said composite dialing signal in accordance with said position identifying code.

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