Patents by Inventor James M. Amster

James M. Amster 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).

  • Technique for monitoring conversational voice over packet
    Patent number: 6961315
    Abstract: The quality of conversational voice for Voice-over-Packet transmissions on a Path (11) in a packet network (10) is achieved by injecting probe packets for transmission along the path and then measuring packet loss and the delay. From the delay and loss measurements, analytic values for the voice quality impairment caused by delay and by network loss, respectively, are established. An overall measure of the conversational voice quality is then derived in accordance with the algebraic sum of the analytic values for the voice quality impairment caused by delay and by network loss, respectively.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: November 1, 2005
    Assignee: AT&T Corp.
    Inventors: James M. Amster, Robert G. Cole, Joshua Hal Rosenbluth