Patents by Inventor Christian C. Constantinof

Christian C. Constantinof 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).

  • Method and apparatus enabling local number portability in telephone networks
    Patent number: 6882721
    Abstract: A method for providing local number portability between subscriber lines served by a distributed switch call manager (DSCM) involves updating translation tables of the DSCM to direct call control messages to a media gateway (MG) that serves the ported number. The service features and service feature profile of the ported subscriber are ported concurrently with the directory number, without re-provisioning.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: April 19, 2005
    Assignee: Nortel Networks Limited
    Inventors: Vladimir V. Mikhailov, Michael M. Gawargy, Christian C. Constantinof
  • Method and apparatus enabling local number portability in telephone networks
    Publication number: 20020080947
    Abstract: A method for providing local number portability between subscriber lines served by a distributed switch call manager (DSCM) involves updating translation tables of the DSCM to direct call control messages to a media gateway (MG) that serves the ported number. The service features and service feature profile of the ported subscriber are ported concurrently with the directory number, without re-provisioning.
    Type: Application
    Filed: December 26, 2000
    Publication date: June 27, 2002
    Applicant: Nortel Networks Limited
    Inventors: Vladimir V. Mikhailov, Michael M. Gawargy, Christian C. Constantinof