(In the construction mode of PON+LAN or PON+DSL, the distance between the ONU and the user needs to be shortened as much as possible. The ONU may be placed in the building or outside the building and the green belt beside the building according to the needs. The comprehensive information box is used to supply ONU equipment equipment, lightning protection power supply, optical cable entry and fusion, Ethernet or audio wiring and other functions.)
收藏
