Patents by Inventor Kyle D. McIntosh

Kyle D. McIntosh 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).

  • Method and apparatus for providing 56K modem technology for public switched telephone networks
    Patent number: 6229886
    Abstract: To take advantage of 56K modem technology, a data signal must only traverse one digital to analog (D/A) conversion and one analog to digital (A/D) conversion on the return path to a subscriber. However, current data transmission for subscribers served by a Universal DLC system requires a D/A conversion at a voice switch of a public switched telephone network (PSTN), an A/D conversion at the central office terminal of a PSTN and a D/A conversion at a remote data terminal of a DLC system. This adds a D/A and an A/D conversion which causes 56K modem technology to fail. The present invention provides a telephone call routing apparatus installed between subscribers served by a Universal type digital loop carrier system, a central office terminal of a PSTN and a data network interface.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: May 8, 2001
    Assignee: Ciena Corporation
    Inventors: Francis A. Moody, Kyle D. McIntosh