Backbone network transmission is the main solution for OTN applications, mainly used in national trunk lines, interconnection between metropolitan area networks and marine network transmission systems. Build large-granularity WDM transmission solutions for operators and industry network customers.

At the backbone network level, OTN can meet ultra-high-speed, ultra-large capacity and ultra-long-distance transmission requirements, and provide an intelligent, safe and efficient transmission network with the support of SDN and control plane technologies.