| 摘要 |
The invention relates to an optical network termination (3) for receiving a multi-speed, multi-level signal (7) comprising a first discrete-level signal (6) having a first symbol rate and a second discrete-level signal (8) having a second symbol rate, the second symbol rate being an integer multiple of the first symbol rate, the optical network termination (3) comprising: a decision unit (18) adapted to perform an amplitude decision of the first discrete-level signal (6) of the multi-speed, multi-level signal (7), and a data recovery unit (17), preferably a decision flip-flop, adapted to perform a data recovery of the second discrete-level signal (8) of the multi-speed, multi-level signal (7). The optical network termination (3) is adapted to control the decision threshold of the amplitude decision of the data recovery unit (17) in dependence of the decided amplitude of the first discrete-level signal (6). The invention also relates to a PON comprising at least one such ONT (3), to a corresponding method and to a computer program product for implementing the method.
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