Patents by Inventor David John Prime

David John Prime 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).

  • Suppression of call answer supervision in a telephone network by an intelligent peripheral
    Patent number: 6055306
    Abstract: This invention relates to an intelligent peripheral (IP) for connecting to a telephone network and providing added capabilities to the network. More particularly the invention relates to programmable suppression of call answer supervision by an intelligent peripheral or a voice recognition unit in a telephone network. The method comprises the steps of: the peripheral device receiving a call setup message from a network switch when a call is being initiated. The IP, on receipt of the call setup signal, suppresses the normal answer signal output and instead outputs a progress signal to the network switch. For an ISDN network the progress signal is a Progress Indicator PI=08 signal.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: April 25, 2000
    Assignee: International Business Machines Corp.
    Inventors: Zygmunt Anthony Lozinski, David John Prime, Andrew Ritchie