A.Metro 100 B.OSN 500 C.Metro 1000 D.OSN 3500
A.ATM業(yè)務 B.GE以太網(wǎng)業(yè)務 C.FE以太網(wǎng)業(yè)務 D.2MPDH業(yè)務
A.155M B.622M C.2.5G D.10G