Patents by Inventor Donald F. Fleshren

Donald F. Fleshren has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for protecting a telecommunications network from false alarm conditions due to T1 line signal interruption
    Patent number: 5596568
    Abstract: An apparatus continuously monitors the T1 output signal from a customer telecommunications equipment to a telecommunications network and provides a substitute input signal to the network whenever the T1 output signal from the customer equipment is interrupted. When the output signal from the customer equipment is present, the apparatus passes through the input and output signals between the customer equipment and the network. When the output signal from the customer equipment is interrupted, the apparatus loops back the output signal from the network into the input to the network, providing the network with a substitute signal. The monitor uses a high impedance, non-intrusive sensing circuit.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: January 21, 1997
    Assignee: MCI Communications Corporation
    Inventor: Donald F. Fleshren