Multiplex communications – Diagnostic testing – Of a switching system
Reexamination Certificate
2011-05-03
2011-05-03
Pham, Chi H (Department: 2471)
Multiplex communications
Diagnostic testing
Of a switching system
C370S252000, C370S285000
Reexamination Certificate
active
07936685
ABSTRACT:
An intelligent fast switch-over network active tap system enables active monitoring of a network segment connected between network devices. A fail-safe relay subsystem is coupled between a pair of network ports, enabling transmission of network communications signals through a passive cross-connect between the network ports or through an active bridge subsystem. The active bridge subsystem is capable of independently establishing network links with the network devices, and a separate network link with a monitoring device. A controller manages operation of the relay and active bridge subsystems, including switches between passive and active network transmission through the tap system and to determine and establish the active network links subject to symmetric network link parameters and state. Thereby, the network link status of the connected network devices is preserved on switch between active and passive transmission and correctly reflected in the presence of link and power failures.
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Mohebbi Kouroush
Pham Chi H
SNR Denton US LLP
VSS Monitoring, Inc.
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