Patents by Inventor R. Keith Stephenson

R. Keith Stephenson 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).

  • Patent number: 6049545
    Abstract: A communications system in a distributed telecommunications switch having a service unit and at least one delivery unit is provided. The system includes a plurality of network controllers residing in the at least one delivery unit, and at least two network controllers residing in the service unit. An administration network is coupled to a first one of the plurality of delivery unit network controllers and to a first one of the two service unit network controllers. The administration network transporting messages having administration information between the service unit and delivery unit. A call processing network is coupled to the remaining of the plurality of delivery unit network controllers and to the second one of the two service unit network controllers. The call processing network transporting messages having call processing information between the service unit and delivery unit.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: April 11, 2000
    Assignee: Alcatel USA Sourcing, L.P.
    Inventors: R. Keith Stephenson, Steve M. Pullen, David L. Hill, Alfred J. Blanchard