Report copyright - 「CK375/CL605/CE635標通訊光纖傳輸系 統(SDH) …rdnet.taipei.gov.tw/xDCM/DOFiles/pdf/00/00/01/46/12/970103-pdf... · 路(Ring Self-healing Network ),網路中之任一處訊號衰退、設備故障或光纖斷線時
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