多项选择题
A. revertive
B. circuit size
C. circuit type
D. bidirectional
E. protected drops
F. Switch on PDI-P
多项选择题 WhichthreetimingmodesaresupportedontheONS15454shelf?()
单项选择题 TheML-seriesEthernetcardontheONS15454providesupto()activeQ-in-Qinstancespercard.
单项选择题 You are installing a Cisco ONS 15454 SDH in a service provider site. An E3 cable is being connected to a digital cross-connect system. What is the maximum distance allowed between the two?()