Patents Assigned to TDX Systems, Inc.
  • Telephone communications control system having a plurality of remote switching units
    Patent number: 4160129
    Abstract: Local to long-distance interconnections at the remote units are effected without necessity of voice connections through the centrally located processing unit.
    Type: Grant
    Filed: May 3, 1977
    Date of Patent: July 3, 1979
    Assignee: TDX Systems, Inc.
    Inventors: Alan Peyser, William Von Meister
  • Telecommunications call back system
    Patent number: 4139739
    Abstract: A centrally located processing unit controls the use of long-distance communication circuits and records the use of the circuits. The centrally located processing unit selects the least expensive telephone line available and instructs the remote satellite to thereby insure the optimum use of bulk rate communications lines. Where no desired bulk rate communication facility is available, a user enters a call-back number into the processing unit and is called back at that number when the facility becomes available.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: February 13, 1979
    Assignee: TDX Systems, Inc.
    Inventors: William von Meister, Alan Peyser