Patents by Inventor Denny Ko

Denny Ko 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).

  • Architecture to support public voice VPN services over an IP network
    Patent number: 7983269
    Abstract: The presently disclosed architecture enables a service provider to support public voice VPN services over an IP VPN network. The architecture utilizes a customer VPN, a designated gateway for the customer VPN, an IP VPN transport network, and a Call Control Element/router Complex which uses IP technology to map between the IP VPN and the voice VPN. With such an arrangement, the customer VPN is extended to the gatekeeper of the Call Control Element/router Complex, thereby enabling the provision of voice VPN services over an IP network.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: July 19, 2011
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Kwok T. Fung, Denny Ko, Emmanuel K. Sam, Fang Wu, Eberhard F. Wunderlich
  • ARCHITECTURE TO SUPPORT PUBLIC VOICE VPN SERVICES OVER AN IP NETWORK
    Publication number: 20090168781
    Abstract: The presently disclosed architecture enables a service provider to support public voice VPN services over an IP VPN network. The architecture utilizes a customer VPN, a designated gateway for the customer VPN, an IP VPN transport network, and a Call Control Element/router Complex which uses IP technology to map between the IP VPN and the voice VPN. With such an arrangement, the customer VPN is extended to the gatekeeper of the Call Control Element/router Complex, thereby enabling the provision of voice VPN services over an IP network.
    Type: Application
    Filed: March 4, 2009
    Publication date: July 2, 2009
    Inventors: Kwok T. Fung, Denny Ko, Emmanuel K. Sam, Fang Wu, Eberhard F. Wunderlich
  • Architecture to support public voice VPN services over an IP network
    Patent number: 7533410
    Abstract: The presently disclosed architecture enables a service provider to support public voice VPN services over an IP VPN network. The architecture utilizes a customer VPN, a designated gateway for the customer VPN, an IP VPN transport network, and a Call Control Element/router Complex which uses IP technology to map between the IP VPN and the voice VPN. With such an arrangement, the customer VPN is extended to the gatekeeper of the Call Control Element/router Complex, thereby enabling the provision of voice VPN services over an IP network.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: May 12, 2009
    Assignee: AT & T Corp.
    Inventors: Kwok T. Fung, Denny Ko, Emmanuel K. Sam, Fang Wu, Eberhard F. Wunderlich