Optical transceivers e mafai ona vaevaeina i 3 vaega e tusa ai ma tekinolosi: PDH, SPDH, SDH, HD-CVI.PDH transceiver opitika: PDH (Plesiochronous Digital Hierarchy, quasi-synchronous numera numera) transceiver opitika o se laʻititi laʻititi gafatia, lea e masani ona faʻaaogaina i paga, a ...
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