Patent ID: 6856683

Claim:
A method for reducing noise from a non-linear device that shares a customer loop with a splitterless Asymmetric Digital Subscriber Line modem, the method comprising the steps of: measuring a current noise characteristic for the customer loop, wherein the current noise characteristic is measured by the modem, wherein measuring the current noise characteristic further comprises transmitting a plurality of tones from the modem to a central office over the customer loop, wherein the plurality of tones are Fast Retrain R-MEDLEY tones, and wherein the R-MEDLEY tones are repetitions of a thirty-eighth symbol of R-MEDLEY; making a determination as to whether the current noise characteristic is within a comparison level of a previous noise characteristic; and when the determination is that the current noise characteristic is not within the comparison level of the previous noise characteristic, limiting transmitted power from the modem by an amount equal to a power cutback value, wherein limiting transmitted power comprises reducing power across transmit bins.