Method and apparatus for acquiring crosstalk information

The invention discloses a method for obtaining crosstalk interference information, comprising the steps: according to the validity judgment condition, efficient actual transmission power at the side of a digital subscriber line and receiving noise spectrum data are obtained; and crosstalk interference function is calculated according to the efficient actual transmission power and the receiving noise spectrum data. The embodiment of the invention also provides a device used for obtaining crosstalk interference information. By adopting the invention, according to the validity judgment condition, the efficient actual transmission power at the side of a digital subscriber line and the receiving noise spectrum data can be obtained; the crosstalk interference function can be imputed without needing large amount of data, so that the crosstalk interference information can be obtained, and the operational capability is greatly enhanced.