Patents by Inventor David McDonell

David McDonell 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).

  • PSTN call routing control features applied to a VoIP
    Patent number: 7016343
    Abstract: A system and method of sending and receiving voice calls over the Internet is described. The system includes a PSTN-derived intelligent call routing engine that receives call control messages from the Voice over IP (VoIP) network and routes calls via previously stored, customized routing procedures. Special dialing plan, 800 numbers, minimized cost routing, time and day-based least cost routing, transferring, conferencing, and additional messaging capabilities are provided. The system operates on standard server computers with interface cards connected to the packetized networks via TCP/IP and, indirectly, to VoIP gateways to accessing PSTN networks and to virtual and/or private networks (PBXs).
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: March 21, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Adam Mermel, David McDonell