Patents by Inventor Gerald D. Lystad

Gerald D. Lystad 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).

  • Method for rerouting intra-office digital telecommunications signals
    Patent number: 6826146
    Abstract: A method of rerouting a digital intra-office signal through a telephone central office comprises the steps of retrieving identification data for ports of first and second digital access and cross-connect systems, the ports being connected by an intra-office digital trunk, retrieving identification data for an alternative path from the first cross-connect system to the second cross-connect system, correlating identification data for the alternative path to the identification data for the intra-office digital trunk, determining availability of and displaying alternative path data responsive to entry of identification data for the intra-office digital trunk, and rerouting the intra-office digital signal via the alternative path.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: November 30, 2004
    Assignee: AT&T Corp.
    Inventors: James Blenis, Leigh B. Channell, Gerald D. Lystad