3.1 Parallel construction
Side by side, new junction boxes are set on the left, right or rear of the original fiber optic cable transfer box. The two junction boxes are connected to the U-shaped PVC pipe on the base, which is convenient for arranging optical fiber jumpers between the junction boxes. The cable end of the new connector is in the new cable transfer box; if the right end of the original cable transfer box needs to be terminated and the terminal is not enough, you can cut the optical cables of some connectors to the new cable transfer box; Connected by optical fiber jumper.
This new Liguang junction box involves municipal approval. It requires a new cement base with a casting area of no less than a new box, which is difficult to implement. In addition, due to the influence of the space of the PVC pipe and the layout mode, the fiber jump between the optical junction boxes is inconvenient, and the number of fiber jumps is limited. 3.2 Direct Litigation
This method is similar to a side-by-side structure. The main difference is that the direct packaging conversion is to replace the original optical transmission box with a new one. The general method is as follows:
(A) The dump area of the new cement base is not less than the dump area of the new box.
B) Remove the top cover, top plate and door panel of the original box, and keep other internal accessories intact.
C) The new box base is put on the top of the original box and fixed on the newly dumped base.
D) Install new fiber frequency hopping channels and other components.
E) Adjust the expansion box and install ordinary roof, roof and door panels.
Similar to the parallel structure, the new Liguang junction box involves municipal approval, requires a new cement base, and the casting area is not smaller than the new box, which is difficult to implement. However, fiber jumps between optical junction boxes are easier than parallel structures, and the number of fiber jumps is not limited, and the box structure is uniform and beautiful.
