Patents by Inventor Stephen Ramsay

Stephen Ramsay 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).

  • Dynamically anchoring a communication session in an IP network
    Patent number: 7848336
    Abstract: Anchoring a communication session for a mobile node involves a signaling node that intercepts a routing information request sent by a switching center of a circuit-switched network. The routing information request requests routing information for the communication session. Subscription information associated with the mobile node is retrieved. Whether the mobile node is eligible to be anchored in a packet-switched network is established. Anchoring of the communication session in the packet-switched network is initiated if the mobile node is eligible to be anchored in the packet-switched network.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: December 7, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Eric Hamel, Mark Grayson, Stephen Ramsay
  • Dynamically Anchoring A Communication Session In An IP Network
    Publication number: 20070280202
    Abstract: Anchoring a communication session for a mobile node involves a signaling node that intercepts a routing information request sent by a switching center of a circuit-switched network. The routing information request requests routing information for the communication session. Subscription information associated with the mobile node is retrieved. Whether the mobile node is eligible to be anchored in a packet-switched network is established. Anchoring of the communication session in the packet-switched network is initiated if the mobile node is eligible to be anchored in the packet-switched network.
    Type: Application
    Filed: June 1, 2006
    Publication date: December 6, 2007
    Inventors: Eric Hamel, Mark Grayson, Stephen Ramsay