Method for selecting an operating mode automatically

摘要

Embodiments of the present invention discloses a method for selecting an operating mode including the steps: a first station transmits downlink handshake signals to a second station; the second station acquires the information of the downlink handshake signals and transmits the acquired information to the first station; the first station selects an operating mode according to the received information. The downlink handshake signal includes the border tones in each mode and supported by both the first station and the second station. The present invention reduces the time of selecting an operating mode and further ensures that the xDSL network operating mode according with the requirements of practical services can be selected.