Westell Technologies, Inc.

Christopher F Simanonis

Mark S Ziermann

John C Goluch

George G Wagner

Daniel Wynard

A system and method are presented for demarcating an optical network. The system comprises an optical monitor that receives a portion of an outbound signal from an optical network and generates a switch control signal based on the intensity of the outbound signal. Generally, the switch control signal is active when the intensity of the outbound signal falls below a threshold value. Alternatively, the system comprises an override switch, and the switch control signal is active when the override signal is activated or the outbound signal falls below a threshold value. An optical switch receives the switch control signal, and selectively isolates the network generating the outbound signal from the rest of the network when the switch control signal is active. The method for demarcating an optical network comprises generally coupling both the inbound signals of first and second networks and the outbound signals of the networks, and selectively isolating the first and second networks by looping signals back into the networks when the outbound signal of the second network falls below a threshold value.

System and method for optical network demarcation

An improved, more intelligent network interface unit capable of processing signals received from a high speed transmission media and outputting the received signals without substantial amplification or reduction. The network interface unit comprises a regenerator circuit which detects T1 signals from said high-speed transmission media and outputs a digital stream to a serial data processor for processing via a micro-controller. A wave shaper circuit receives the output from the serial data processor and, in conjunction with the micro-controller and a level detector circuit, regenerates signals having substantially the same wave shape and amplitude as the original T1 signals received from said transmission media.

Growing community of inventors

Winfield, IL, United States of America

Christopher F Simanonis