Diagnostic methods for twisted pair telephone lines based on line data distribution analysis

摘要

Methods and systems for twisted pair telephone line diagnostics based on patterns of line data occurring over time. An observed data distribution is classified as periodic or based on modeled distributions previously determined to correspond to a known line activity, fault type, or fault location. A disruption or parameter value pattern is classified through statistical inference of operational and performance data collected from the line. Where the disruption and/or parameter value(s) correlate with a time the customer is at the customer premises, an inference is made that the line fault causing the disruption is more likely at the CPE than at the Central Office. Where the disruption distribution is classified as being a result of human activities initiated on the line, a fault condition associated with the activity is inferred. Where a disruption pattern is correlated with human initiated plain old telephone service (POTS), a micro-filter problem is inferred for the line.

主权项

1. A method of diagnosing a twisted pair telephone line having a DSL transceiver at opposite ends of the line, the method comprising:
identifying a plurality of disruptions in DSL communications on the line through analysis of at least one data parameter sampled over a time period from the line; generating a temporal distribution of the disruptions over a least a portion of the sampling period; assessing a correlation between the temporal distribution of the disruptions and one or more reference distributions; and associating the disruptions with an activity on the line or with a condition of the line corresponding to the one or more reference distributions in response to assessing the correlation.