Patents by Inventor Herman H. Lee

Herman H. Lee 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).

  • Identifying the source and destination sites for a VoIP call with dynamic-IP address end points
    Patent number: 10263954
    Abstract: In a voice-over-IP communications network, call data records include dynamically assigned IP signaling addresses such as IPv6 signaling addresses used in provisioning communications sessions. Those dynamically assigned IP signaling addresses are computed from customer site identification codes using a reversible algorithm. The algorithm can then be reversed to compute a customer site identification code from an IP signaling address contained in a call data record, allowing the communications network provider to perform quality monitoring and diagnostics based on call data records.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: April 16, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P
    Inventors: Herman H. Lee, Angelo Napoli, Chin-Wang Chao, Himali Patel, Yean-Ming Huang, Melody Shaw
  • IDENTIFYING THE SOURCE AND DESTINATION SITES FOR A VOIP CALL WITH DYNAMIC-IP ADDRESS END POINTS
    Publication number: 20170366503
    Abstract: In a voice-over-IP communications network, call data records include dynamically assigned IP signaling addresses such as IPv6 signaling addresses used in provisioning communications sessions. Those dynamically assigned IP signaling addresses are computed from customer site identification codes using a reversible algorithm. The algorithm can then be reversed to compute a customer site identification code from an IP signaling address contained in a call data record, allowing the communications network provider to perform quality monitoring and diagnostics based on call data records.
    Type: Application
    Filed: June 17, 2016
    Publication date: December 21, 2017
    Inventors: Herman H. Lee, Angelo Napoli, Chin-Wang Chao, Himali Patel, Yean-Ming Huang, Melody Shaw
  • Scalable and robust mechanism for remote IP device monitoring with changing IP address assignment
    Patent number: 7898939
    Abstract: A method is provided for monitoring devices with changing IP addresses. SNMP trap is received from a device at a first IP address to notify that a connection is up, and a SNMP poll is transmitted to the device to obtain an identifier. Predetermined consecutive SNMP GET requests are transmitted to the device in intervals. Responsive to failing to receive from the device predetermined consecutive SNMP GET responses equal to the predetermined consecutive SNMP GET requests, it is determined that there is a connection failure or a device failure and checked whether the device is in a maintenance window. If not in maintenance window, a trouble ticket is generated. Responsive to the failure, there is a predetermined waiting period for another SNMP trap from the device with a second IP address and the same identifier notifying that a connection is back up, and no trouble ticket is generated.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: March 1, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Herman H. Lee, Richard A. Brotz, Chin-Wang Chao, Wenwen Ji, Drew D. Johnson, Ronald E. Papritz, Gregory S. Pedder
  • Scalable and Robust Mechanism for Remote IP Device Monitoring With Changing IP Address Assignment
    Publication number: 20100150170
    Abstract: A method is provided for monitoring devices with changing IP addresses. SNMP trap is received from a device at a first IP address to notify that a connection is up, and a SNMP poll is transmitted to the device to obtain an identifier. Predetermined consecutive SNMP GET requests are transmitted to the device in intervals. Responsive to failing to receive from the device predetermined consecutive SNMP GET responses equal to the predetermined consecutive SNMP GET requests, it is determined that there is a connection failure or a device failure and checked whether the device is in a maintenance window. If not in maintenance window, a trouble ticket is generated. Responsive to the failure, there is a predetermined waiting period for another SNMP trap from the device with a second IP address and the same identifier notifying that a connection is back up, and no trouble ticket is generated.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: AT&T INTELLECTUAL PROPERTY 1, L.P.
    Inventors: Herman H. Lee, Richard A. Brotz, Chin-Wang Chao, Wenwen Ji, Drew D. Johnson, Ronald E. Papritz, Gregory S. Pedder