| 摘要 |
A terminal device (ONT1) arranged for communicating data signals with a central communication device (OLT), via a first signal carrying line and a second signal carrying line; the first signal carrying line being arranged for transportin g a first signal; the second signal carrying line being arranged for transporting a second signal, the first and second signals having equal content; the first signal carrying line havi ng a first propagation time and the second signal carrying line having a second propagation time, the first propagation time being shorter than the second propagation time; t he terminal device comprising signal quality comparison means (CDD1, CDD2, PCA1, PCA2, DPSC1) for determining a first signal quality of the first signal and a seco nd signal quality of the second signal, comparing the first and second signal qualitie s, and accepting the one of the first and second signals that has a better quality than the other one. |
