The present invention relates to the HFC network Internet service management system, in particular in the destroyer the Internet network using the HFC network is installed or the like existing structures by removing noise enhance the performance of the Internet network and can also manage the Internet communication network to the remote to a system that. According to the HFC network Internet service management system of the present invention intelligently block the noise from entering the HFC networks improve the signal transmission performance of the uplink signal and, digital analysis of the frequency characteristic of the noise signal by performing signal processing according to the noise characteristics It can be adjusted by the respective parameters of the system for optimal performance of the uplink signal transmission. ; HFC network, Internet service, digital signal processing, performance improvement group, Performance Manager
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