Patents by Inventor Andrew C. Preston

Andrew C. Preston 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).

  • Homing and controlling IP telephones
    Patent number: 6937563
    Abstract: The present invention relates to providing server functionality in a dedicated module or a specially configured packet-switched telephone. The server function is preferably adapted to control the configuration and operation of a plurality of packet-switched telephones configured to operate as clients of the server function. The server function may control specific operation of the packet-switched telephones as well as support communications between the packet-switched telephones and other telephony devices over the packet-switched network. The server function may operate to facilitate communications with the supported packets-switched telephones using a first protocol and with the other telephony devices using a second protocol. The second protocol is preferably the Session Initiation Protocol (SIP).
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: August 30, 2005
    Assignee: Nortel Networks Limited
    Inventors: Andrew C. Preston, Steve J. McKinnon, Steve S. Yang, Joshua Me
  • Homing and controlling IP telephones
    Publication number: 20020126654
    Abstract: The present invention relates to providing server functionality in a dedicated module or a specially configured packet-switched telephone. The server function is preferably adapted to control the configuration and operation of a plurality of packet-switched telephones configured to operate as clients of the server function. The server function may control specific operation of the packet-switched telephones as well as support communications between the packet-switched telephones and other telephony devices over the packet-switched network. The server function may operate to facilitate communications with the supported packets-witched telephones using a first protocol and with the other telephony devices using a second protocol. The second protocol is preferably the Session Initiation Protocol (SIP).
    Type: Application
    Filed: March 8, 2001
    Publication date: September 12, 2002
    Inventors: Andrew C. Preston, Steve J. McKinnon, Steve S. Yang, Joshua Me