Patents by Inventor Thomas Andrew Hoch

Thomas Andrew Hoch 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).

  • Switch fabric testing
    Patent number: 6667959
    Abstract: A method is presented which allows for the testing and verification of an off-line switch fabric used in network switch having redundant switch fabrics. A special test cell is directed to the off-line switch fabric, loops through a portion of the switching core of the off-line switch fabric, and is returned from the off-line switch fabric. A plurality of test cells can be used to provide full mesh connectivity checking of the off-line switch fabric. Testing is accomplished without need for reconfiguration of the off-line switch fabric, and the off-line switch fabric is available for use immediately upon determination of the need therefor.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: December 23, 2003
    Assignee: Ascend Communications, Inc.
    Inventors: Andrew T. Hebb, Thomas Andrew Hoch, Patrick L. DeAngelis, Brian W. Branscomb