Patent ID: 9071534
Filing Date: 2015-06-30
Classification: H04L,H04M

Abstract:
1. A method for declaring a condition on a DSL system test loop configuration, the method comprising: collecting operational data from a DSL system test loop comprising a first DSL transceiver at a near end of the test loop and a second DSL transceiver at a far end of the test loop, wherein the operational data is a result of transmissions between the first and second DSL transceiver; obtaining a test loop parameter vector from the collected operational data, wherein the test loop parameter vector comprises one or more loop-dependent parameter values, including a measured loop attenuation per frequency of the DSL system test loop configuration; selecting a reference parameter vector corresponding to a reference loop configuration that does not include the condition, wherein the reference loop parameter vector comprises one or more loop-dependent parameter values, including a loop attenuation per frequency for the reference loop configuration; comparing a plot of the measured attenuation per frequency for the DSL system test loop configuration to a plot of the attenuation over frequency for the reference loop configuration; locating one or more peaks in the plot of the measured attenuation per frequency for the DSL system test loop configuration relative to the plot of the attenuation over frequency for the reference loop configuration, based on the comparison; and declaring the condition on the DSL system test loop based on the location or estimated size of the one or more peaks in the plot of the measured attenuation per frequency for the DSL system test loop configuration.