| 摘要 |
The invention concerns a non intrusive control process of an xDSL transmission line from signals and messages exchanged between at least one emitter (1) to at least one receiver (2) at the end of or during a predefined handshaking procedure. This process comprises the following steps: a1. Analysing the type of signals exchanged between the emitter (1) and the receiver (2) during the establishment of the new contact, b1. Establishing a diagnosis on the state of the line according to the result of step b1.
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