NAPERVILLE, Ill.--(BUSINESS WIRE)--Coriant, a global supplier of SDN-enabled end-to-end transport networking solutions, today announced that NBN Co is extending the rollout of its nationwide optical transport network with deployment of a high-capacity fiber optic ring built upon the Coriant® hiT 7300 Multi-Haul Transport Platform. Spanning over 10,000 kilometers in Western Australia, the fiber optic ring will enable NBN Co to expand the capacity of its backbone network and enhance the delivery