F-ENGINE B2101-E1FX-MM-SC           非帧E1--ETH多模光接口转换器,多模,SC接口,2km,220V
F-ENGINE B2101-E1FX-SM-SC-20        非帧E1--ETH单模光接口转换器,单模,SC接口,20km,220V
F-ENGINE B2101-E1FX-SSM-SC-20-53    非帧E1--ETH单模光接口转换器,单纤,单模,SC接口,20km,发射波长1550nm,接收1310nm,220V
F-ENGINE B2101-E1FX-SSM-SC-20-35    非帧E1--ETH单模光接口转换器,单纤,单模,SC接口,20km,发射波长1310nm,接收1550nm,220V