Abstract: A method for detecting radio frequency interference (RFI) is provided. The method includes the following steps. Parameters of at least two pairs of digital subscriber lines (DSLs) are acquired. Sub-carriers having RFI in each pair of the at least two pairs of DSLs are detected according to the parameters. The number of line pairs having RFI on the same sub-carrier in the DSLs is counted, and if the number of the line pairs occurring RFI on the sub-carrier is greater than a preset threshold, or if a ratio of the number of the line pairs occurring RFI on the sub-carrier to a line pair number of the at least two pairs of DSLs is greater than a preset threshold, it is determined that RFI exists at a frequency corresponding to the sub-carrier. A device and a system for detecting RFI are further provided. Therefore, RFI frequency existing in xDSL can be detected.

Abstract: An embodiment of the present disclosure provides a method for data acquisition. The method includes the following steps: transmitting a request message for acquiring line parameters to a central-office end access apparatus, and obtaining a time parameter T1 when the line parameter acquisition is started; receiving line parameter information reported by the central-office end access apparatus, and obtaining a time parameter T2 of a line; and comparing the time parameter T1 with the time parameter T2 of the line, and saving the received line parameter information if the time parameter T1 is larger than the time parameter T2 of the line. Embodiments of the present disclosure further provide an apparatus and a system for data acquisition.

Abstract: The present disclosure includes a method for acquiring DSL parameters, a module for acquiring Digital Subscriber Line (DSL) parameters, and a line management system. The method includes: obtaining the priority of a DSL; and acquiring parameters of the DSL in an acquisition period corresponding to the obtained priority, in accordance with a preset corresponding relationship between the priority of the DSL and the acquisition period. The system includes: a module for acquiring DSL parameters, configured to obtain the priority of a DSL and acquire parameters of the DSL in an acquisition period corresponding to the obtained priority in accordance with a preset corresponding relationship between the priority of the DSL and the acquisition period; a database configured to store the parameters acquired by the module for acquiring DSL parameters; a line management module configured to manage the DSL using the DSL parameters.

Abstract: A method for detecting radio frequency interference (RFI) is provided. The method includes the following steps. Parameters of at least two pairs of digital subscriber lines (DSLs) are acquired. Sub-carriers having RFI in each pair of the at least two pairs of DSLs are detected according to the parameters. The number of line pairs having RFI on the same sub-carrier in the DSLs is counted, and if the number of the line pairs occurring RFI on the sub-carrier is greater than a preset threshold, or if a ratio of the number of the line pairs occurring RFI on the sub-carrier to a line pair number of the at least two pairs of DSLs is greater than a preset threshold, it is determined that RFI exists at a frequency corresponding to the sub-carrier. A device and a system for detecting RFI are further provided. Therefore, RFI frequency existing in xDSL can be detected.

Abstract: The present disclosure includes a method for acquiring DSL parameters, a module for acquiring Digital Subscriber Line (DSL) parameters, and a line management system. The method includes: obtaining the priority of a DSL; and acquiring parameters of the DSL in an acquisition period corresponding to the obtained priority, in accordance with a preset corresponding relationship between the priority of the DSL and the acquisition period. The system includes: a module for acquiring DSL parameters, configured to obtain the priority of a DSL and acquire parameters of the DSL in an acquisition period corresponding to the obtained priority in accordance with a preset corresponding relationship between the priority of the DSL and the acquisition period; a database configured to store the parameters acquired by the module for acquiring DSL parameters; a line management module configured to manage the DSL using the DSL parameters.