Subscriber loop repeater loopback for fault isolation

Details Subscriber loop repeater loopback for fault isolation Subscriber loop repeater loopback for fault isolation

G - Physics

01

R

G01R 31/08 (2006.01) H04B 17/02 (2006.01) H04M 3/30 (2006.01)

Patent

CA 2353778

Systems and methods are described for subscriber loop repeater loopback for fault isolation. A method includes obtaining a sample of a downstream signal conveyed along a signal path; performing an analysis of the sample; determining a presence or an absence of a fault in the signal path based on the analysis of the sample; indicating a presence or an absence of a fault in the signal path by transmitting a diagnostic signal to an upstream node; and isolating a location of the fault as a function of the diagnostic signal. An apparatus includes a band pass filter; a detection unit coupled to the first band pass filter; a data processor coupled to the detection unit; a health checking unit coupled to the microcontroller; a digital to analog converter coupled to the microcontroller; a low pass filter coupled to the digital to analog converter; and a summer coupled to the low pass filter.

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