Patents by Inventor James Angus McEachem

James Angus McEachem 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).

  • Loop condition prevention at internetwork interface boundary
    Patent number: 8934481
    Abstract: The present invention provides a solution to maximize the chance of completion for an ISUP to SIP direction call by enabling a bigger factor for converting ISUP hop counter to SIP Max-Forwards value than the reverse direction thus enabling more hops in the SIP network. Enabling a bigger factor for ISUP to SIP direction can cause loops without special considerations. This invention provides an algorithm that prevents a “loop condition” that can arise at the interface boundary of two telephone networks, known by their standard names 1SUP and SIP networks. The present invention solves the “loop condition” problem by adjusting the Hop Counter and Max-Forward parameter values in a predetermined manner such that the adjusted parameter values break the cycle of providing the same parameter values between networks at the network boundary for an uncompleted connection, or break an endless “loop condition”.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: January 13, 2015
    Assignee: Genband US LLC
    Inventors: Xuewen Li, Carroll Louise Gray-Preston, James Angus McEachem
  • LOOP CONDITION PREVENTION AT INTERNETWORK INTERFACE BOUNDARY
    Publication number: 20140160993
    Abstract: The present invention provides a solution to maximize the chance of completion for an ISUP to SIP direction call by enabling a bigger factor for converting ISUP hop counter to SIP Max-Forwards value than the reverse direction thus enabling more hops in the SIP network. Enabling a bigger factor for ISUP to SIP direction can cause loops without special considerations. This invention provides an algorithm that prevents a “loop condition” that can arise at the interface boundary of two telephone networks, known by their standard names 1SUP and SIP networks. The present invention solves the “loop condition” problem by adjusting the Hop Counter and Max-Forward parameter values in a predetermined manner such that the adjusted parameter values break the cycle of providing the same parameter values between networks at the network boundary for an uncompleted connection, or break an endless “loop condition”.
    Type: Application
    Filed: February 14, 2014
    Publication date: June 12, 2014
    Applicant: GENBAND US LLC
    Inventors: Xuewen Li, Carroll Louise Gray-Preston, James Angus McEachem