| 摘要 |
A method for communicating between a first station and a second station over a wire pair, in which the first station sends an alternating power signal over the wire pair, the alternating power signal comprising a plurality of communication symbols, the second station receiving the alternating power signal and determining therefrom the communication symbols, the second station drawing current from the alternating power signal in a sequence corresponding to at least one further communication symbol, and the first station determining the current drawn in the alternating power signal to recover the further communication symbol.
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