Ciena NXWDM04B-06M Online Metro System Module

The Ciena NXWDM04B-06M Online Metro System Module is a component of Ciena’s ONLINE Metro multiservice DWDM transport platform, engineered for metropolitan-scale optical transport and service delivery across dense urban networks, where high capacity and deterministic latency are essential. Identified as NXWDM04B-06M and associated with the WMD4D50BAA designation in its product description, this module sits within Ciena’s Online Metro family of products designed for scalable, carrier-grade metro DWDM deployments. As part of the Online Metro offering, the module enables multiservice DWDM transport—supporting multiple wavelengths and service channels over a single fiber infrastructure to support metropolitan interconnects. The online metro module is designed to integrate with Ciena’s broader metro transport ecosystem, delivering high-capacity, scalable transport for service providers deploying dense urban DWDM networks.