NDSF：Non-Dispersion Shifted Fiber，无色散位移光纤。关联词：DSF、NZDSF
NMI：Network Management Interface，网管接口。关联词：CCI、NNI
NNI：Network Node Interface，网络节点接口。关联词：CCI 、NMI
NZDSF：Non Zero Dispersion Shifted Fiber，非零色散位移光纤。关联词：DSF、NDSF
