In the subway industry, transmission networks are mostly ring networks, usually two or three rings depending on the length of the subway line. The MS-OTN solution not only meets the tangent ring…

In the subway industry, transmission networks are mostly ring networks, usually two or three rings depending on the length of the subway line. The MS-OTN solution not only meets the tangent ring, but also solves the networking problem of the intersecting ring, which better matches the subway network requirements.