Method and apparatus for detecting improper connections near a customer premises equipment
AssigneeIkanos Communications, Inc.
InventorRaghunath Kalavai
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Abstract
Methods and apparatuses are disclosed for detecting improper connection near the end of an xDSL loop based on separately analyzing the location and levels of time domain signals associated with different transmission bands in an xDSL band plan. In one embodiment, a method is disclosed to separately convert the received test signal data to different sets of time domain data corresponding to different sets of the separate frequency bands, and then to separately analyze the different sets of time domain data to identify an improper connection near the modem.
Claims19
A method for examining connections near a modem in a communications system, comprising:
- receiving test signal data from the line for two or more separate frequency bands;
- separately converting the test signal data to at least first and second different sets of time domain data corresponding to first and second ones of the separate frequency bands;
- and
- separately analyzing the first and second time domain data to identify an improper connection near the modem.
An apparatus for examining connections near a modem in a communications system, comprising:
- a capture block that receives test signal data from the line for two or more separate frequency bands;
- first and second IFFTs that respectively convert the test signal data to at least first and second different sets of time domain data corresponding to first and second ones of the separate frequency bands;
- and
- a TDR analysis engine that analyzes separately the first and second time domain data to identify an improper connection near the modem.
Dependencies are inferred from the claim text.