Ny transceiver optika dia azo zaraina ho sokajy 3 araka ny teknolojia: PDH, SPDH, SDH, HD-CVI.PDH optical transceiver: PDH (Plesiochronous Digital Hierarchy, quasi-synchronous digital series) optical transceiver dia transceiver optika kely, izay matetika ampiasaina tsiroaroa, a...
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