华为1800,华为1800v光端机

huawei osn 1800v otn system dwdm
huawei otn equipment optix osn 1800 i fiber optical transmitter
huawei wdm equipment osn1800
华为osn1800光端机optixosn1800v光传输设备
10pcs/lot huawei e5172s-927 lte fdd1800mhz tdd2300mhz mobile