Patents by Inventor Rajeshkumar Dahyabhai Patel

Rajeshkumar Dahyabhai Patel 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).

  • Emergency call monitor
    Patent number: 6600811
    Abstract: An emergency call monitor (110) monitors the progression of a call in a telephone switching system. The sequence of called digits for a call is detected by a line/trunk interface unit (200). A call-type processor (202) determines whether the call is an emergency call by examining the sequence of called digits and examining a call-type associated with the call. If the call is an emergency call, then a call monitor (204) is initiated to monitor the progression of the call through the telephone switch. If errors are encountered during the call, an alarm (206), including a visual and/or audible indicator, is asserted.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: July 29, 2003
    Assignee: Lucent Technologies Inc.
    Inventors: Rajeshkumar Dahyabhai Patel, Paul Daniel Wolfson