A、T1/E1TDM業(yè)務(2M) B、語音業(yè)務 C、數(shù)據(jù)業(yè)務 D、視頻業(yè)務
A、基于以太網(wǎng)方式的無源光網(wǎng)絡 B、基于ATM的無源光網(wǎng)絡 C、千兆無源光網(wǎng)絡 D、寬帶無源光網(wǎng)絡