Protection switching for duplex atm-pon systems

Details Protection switching for duplex atm-pon systems Protection switching for duplex atm-pon systems

H - Electricity

04

L

H04L 29/12 (2006.01) H04L 12/56 (2006.01) H04Q 11/00 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2351954

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 transporting 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 having 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; the terminal device comprising signal quality comparison means (CDD1, CDD2, PCA1, PCA2, DPSC1) for determining a first signal quality of the first signal and a second signal quality of the second signal, comparing the first and second signal qualities, and accepting the one of the first and second signals that has a better quality than the other one.

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