Patents by Inventor Douglas C. Shriver

Douglas C. Shriver 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).

  • System using a signaling protocol for controlling voice calls originating in a circuit switching telephone network and routed over a packet switching network
    Patent number: 7369545
    Abstract: Communicating voice over a packet-switching network is implemented on a telecommunications network that includes the packet-switching network, two coding units coupled to the packet-switching network and two signaling apparatuses. Signaling data for establishing the voice call is received by an originating signaling apparatus, which generates a message that encapsulates the signaling data in accordance with a common signaling protocol, and transmits the message to a destination signaling apparatus. The message, in accordance with the common signaling protocol, includes a call identifier that uniquely identifies the voice within the packet-switching network, the network address of a signaling apparatus, and/or a connection descriptor for a coding unit.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: May 6, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Andrew West, Douglas C. Shriver, Fred Rednor
  • Signaling protocol for controlling voice calls in a packet switching network
    Patent number: 6658022
    Abstract: Communicating voice over a packet-switching network is implemented on a telecommunications network that includes the packet-switching network, two coding units coupled to the packet-switching network and two signaling apparatuses. Signaling data for establishing the voice call is received by an originating signaling apparatus, which generates a message encapsulates the signaling data in accordance with a common signaling protocol, and transmits the message to destination signaling apparatus. The message, in accordance with the common signaling protocol, includes a call identifier that uniquely identifies the voice within the packet-switching network, the network address of a signaling apparatus, and/or a connection descriptor for a coding unit.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: December 2, 2003
    Assignee: Cisco Technology, Inc.
    Inventors: Andrew West, Douglas C. Shriver, Fred Rednor