A.配以完善的OAM(Operation,AdministrationandMaintenance)和保護(hù)倒換機(jī)制
B.集成了分組傳送網(wǎng)和SDH傳送網(wǎng)的優(yōu)點(diǎn)
C.利用PWE3(PseudoWireEmulationEdge-to-Edge)技術(shù)實(shí)現(xiàn)面向連接的業(yè)務(wù)承載
D.采用針對(duì)電信承載網(wǎng)優(yōu)化的MPLS(MultiprotocolLabelSwitching)轉(zhuǎn)發(fā)技術(shù)此題為多項(xiàng)選擇題。