问题描述:
[多选]
DWDM网元复用段保护组APS属性配置中包含The APS property configuration in the multiplex section protection group of a DWDM NE includes()
A.APS等待恢复时间APS WTR time
B.信号劣化保护Signal degradation protection
C.APS倒换时间APS switching time
D.返回式Revertive
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答案解析:无
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