Patents by Inventor David Charles Sheldon

David Charles Sheldon 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).

  • System and method for mapping a PSTN trunk to a packet network endpoint
    Patent number: 7324502
    Abstract: A system for mapping dissimilar communication protocols is disclosed. In one embodiment, the system comprises user communication information that spans at least two dissimilar communication networks, a first communication protocol associated with a first communication network, a second communication protocol associated with a second communication network, and a software code segment configured to detect a call setup identifier and a call tear-down identifier associated with the first communication protocol, the software code segment also configured to detect a call setup identifier and call tear-down identifier associated with the second communication protocol, where the call setup identifier and the call tear-down identifier associated with the second communication protocol may occur within a predetermined amount of time before or after the call setup identifier or the call tear-down identifier associated with the first communication protocol.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: January 29, 2008
    Assignee: Agilent Technologies, Inc.
    Inventors: David Charles Sheldon, David John McDonald, Douglas John Carson
  • System and method for mapping a PSTN trunk to a packet network endpoint
    Publication number: 20030214971
    Abstract: A system for mapping dissimilar communication protocols is disclosed. In one embodiment, the system comprises user communication information that spans at least two dissimilar communication networks, a first communication protocol associated with a first communication network, a second communication protocol associated with a second communication network, and a software code segment configured to detect a call setup identifier and a call tear-down identifier associated with the first communication protocol, the software code segment also configured to detect a call setup identifier and call tear-down identifier associated with the second communication protocol, where the call setup identifier and the call tear-down identifier associated with the second communication protocol may occur within a predetermined amount of time before or after the call setup identifier or the call tear-down identifier associated with the first communication protocol.
    Type: Application
    Filed: May 20, 2002
    Publication date: November 20, 2003
    Inventors: David Charles Sheldon, David John McDonald, Douglas John Carson