Patents Represented by Attorney Scott W. NcLellan

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  • Overvoltage protection scheme for subscriber loops and method of performing same
    Patent number: 5392349
    Abstract: By opening switches coupling a subscriber loop to circuits in a SLIC when an overvoltage condition occurs, the SLIC is protected from damage. The overvoltage is detected by a overvoltage protector behind the switches. The overvoltage condition is latched and the common control is notified of the condition. The common control may then clear the latch, reclosing the switches. If the overvoltage still exists, the switches are re-opened and maintenance personnel is notified of the fault.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: February 21, 1995
    Assignee: AT&T Corp.
    Inventor: Joseph M. Elder, Jr.