Patents by Inventor Gregg R. Siegfried

Gregg R. Siegfried 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).

  • Patent number: 6263206
    Abstract: Call management method and apparatus in a wireless communication network that route calls through multiple call switching centers. New calls are established when mobile stations seize radio links of a base station. As part of call setup, the base station determines whether the new call arrived to the base station through a hand-off technique or whether the call originated with the base station. If the call arrived by hand-off, the base station receives an identifier of a call switching center that administered the call prior to hand-off and routes the call to the identified call switching center. If the call originated with the base station, the base station communicates to the mobile station an identifier of a default call switching center that will handle the call and routes the call to the default call switching center.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: July 17, 2001
    Assignee: AT&T Corp
    Inventors: Paul A. Potochniak, Gregg R. Siegfried