Patents Assigned to Tele-Assemblies
  • Patent number: 3940570
    Abstract: A system for combining a central telephone trunk line with the trunk line of a customer exchange wherein said central telephone exchange is provided with means for separating the dial, talk, and ring functions into a first partial circuit for providing a service signal to and from said customer trunk line, and a second partial circuit for providing a ring signal to said customer trunk line, an interface device comprising a first circuit controlling the power feed, ring trip and dial pulse of said customer exchange and a second circuit controlling the ring signal from said telephone exchange. The first circuit of said interface system includes a first relay activated by said customer trunk line having a contact located in said first partial circuit responsive to said activation for closing said first partial circuit to establish service with said telephone exchange trunk line.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: February 24, 1976
    Assignee: Tele-Assemblies
    Inventor: Edward Goudikian