Patents by Inventor Richard Wayne Stephenson

Richard Wayne Stephenson 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).

  • ATM-based distributed network switching system
    Patent number: 7304986
    Abstract: A distributed network switching system includes a data network. The system also includes multiple access interworking function (A-IWF) devices each operating as a gateway that enables customer premises devices to directly interface into the data network. The system further includes a centralized control and signaling interworking function (CS-IWF) device that performs call control functions and administrative functions and is adapted to interface narrowband and broadband signaling for call processing and control within the data network.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: December 4, 2007
    Assignee: AT&T Labs, Inc.
    Inventors: George Coleman Allen, Jr., Steven R. Partridge, Samuel Sigarto, Tina Sigarto, Haifeng Bi, Richard Wayne Stephenson
  • Distributed virtual tandem switch
    Patent number: 7095734
    Abstract: A distributed network switching system includes a data network. The system also includes multiple access interworking function (A-IWF) devices each operating as a gateway that enables customer premises devices to directly interface into the data network. The system further includes a centralized control and signaling interworking function (CS-IWF) device that performs call control functions and administrative functions and is adapted to interface narrowband and broadband signaling for call processing and control within the data network.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: August 22, 2006
    Assignee: SBC Technology Resources, Inc.
    Inventors: George Coleman Allen, Jr., Steven R. Partridge, Samuel Sigarto, Tina Sigarto, Haifeng Bi, Richard Wayne Stephenson
  • ATM-based distributed network switching system
    Publication number: 20040233909
    Abstract: An Asynchronous Transfer Mode (ATM)-based distributed network switching system includes an ATM switching network that dynamically sets up individual switched virtual connections. The system also includes multiple access interworking function (A-IWF) devices each operating as a gateway that enables customer premises devices to directly interface into the distributed ATM switching fabric. The system further includes a centralized control and signaling interworking function (CS-IWF) device that performs call control functions and administrative functions and is adapted to interface narrowband and broadband signaling for call processing and control within the ATM switching network. The CS-IWF device may be a server farm.
    Type: Application
    Filed: June 4, 2004
    Publication date: November 25, 2004
    Applicant: SBC Technology Resources, Inc.
    Inventors: George Coleman Allen, Steven R. Partridge, Samuel Sigarto, Tina Sigarto, Haifeng Bi, Richard Wayne Stephenson
  • ATM-based distributed network switching system
    Patent number: 6765903
    Abstract: An Asynchronous Transfer Mode (ATM)-based distributed network switching system includes an ATM switching network that dynamically sets up individual switched virtual connections. The system also includes multiple access interworking function (A-IWF) devices each operating as a gateway that enables customer premises devices to directly interface into the distributed ATM switching fabric. The system further includes a centralized control and signaling interworking function (CS-IWF) device that performs call control functions and administrative functions and is adapted to interface narrowband and broadband signaling for call processing and control within the ATM switching network. The CS-IWF device may be a server farm.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: July 20, 2004
    Assignee: SBC Technology Resources, Inc.
    Inventors: George Coleman Allen, Jr., Steven R. Partridge, Samuel Sigarto, Tina Sigarto, Haifeng Bi, Richard Wayne Stephenson