A Digital Subscriber Line - DSL - Management Center - DMC - coupled to a DSL network, the DMC comprising: a data collection module (130,410) to receive performance and analysis data from a performance enhancement device coupled to a DSL line at a customer premises equipment - CPE - modem, wherein the performance enhancement device comprises a noise cancellation device; an analysis module coupled to the data collection module to analyze the received performance and analysis data and issue a command for the performance enhancement device to optimize its operation; and a command signal generation module coupled to the analysis module to receive the issued command from the analysis module and generate a corresponding command signal for transmission to the performance enhancement device to cancel noise and interference present on the DSL line, wherein the command signal is arranged to cause the performance enhancement device to dynamically adapt at least one of frequency bands and cancellation algorithms responsive to changes in the received performance and analysis data, wherein the DMC is adapted to report performance enhancement and/or analysis statistics concerning the DSL line to a DMC operator and/or to end- users, and wherein the DMC is adapted to receive performance and analysis data from the noise cancellation device; wherein the performance and analysis data comprises: a) information relating to cancellation of different types of noises at the noise cancellation device; b) information about the operation of the noise cancellation device; and c) noise statistics and observed noise cancellation performance of the noise cancellation device. a data collection module (130,410) to receive performance and analysis data from a performance enhancement device coupled to a DSL line at a customer premises equipment - CPE - modem, wherein the performance enhancement device comprises a noise cancellation device; an analysis module coupled to the data collection module to analyze the received performance and analysis data and issue a command for the performance enhancement device to optimize its operation; and a command signal generation module coupled to the analysis module to receive the issued command from the analysis module and generate a corresponding command signal for transmission to the performance enhancement device to cancel noise and interference present on the DSL line, wherein the command signal is arranged to cause the performance enhancement device to dynamically adapt at least one of frequency bands and cancellation algorithms responsive to changes in the received performance and analysis data, wherein the DMC is adapted to report performance enhancement and/or analysis statistics concerning the DSL line to a DMC operator and/or to end- users, and wherein the DMC is adapted to receive performance and analysis data from the noise cancellation device; wherein the performance and analysis data comprises: a) information relating to cancellation of different types of noises at the noise cancellation device; b) information about the operation of the noise cancellation device; and c) noise statistics and observed noise cancellation performance of the noise cancellation device. a) information relating to cancellation of different types of noises at the noise cancellation device; b) information about the operation of the noise cancellation device; and c) noise statistics and observed noise cancellation performance of the noise cancellation device.