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AT&T’s makes OpenROADM headway with optical interoperability test

March 13, 2018 / Nathan Cranford

Having achieved optical interoperability between equipment made by different vendors, AT&T is moving forward with plans to scale Open Reconfigurable Optical Add/Drop Multiplexer (ROADM) deployments using multiple vendors and an optical SDN controller integrated into ECOMP. ROADMs are switches responsible for managing and routing traffic carried across high-capacity fiber optic lines. Software-controlled ROADMs enable users to manage and route traffic using a centralized controller. They are able to detect and modify bandwidth automatically, while moving traffic to different lanes when needed. Although AT&T uses ROADMs and SDN controller in its own management systems, the company said it is beginning to use ROADMs for production customer traffic.