Ciena B-720-1087-421 F10P-A90-21 CN4200 Aggregation Module

The Ciena CN4200 Aggregation Module, identified in the product title as B-720-1087-421 F10P-A90-21, is a CN4200-family plug‑in card designed to aggregate client signals within a CN4200 chassis. In CN4200 deployments, aggregation modules consolidate tributary streams into a single transport path, enabling efficient multi-service delivery across metro and access networks. This specific module is described in reseller listings as an unprotected aggregation module with OTU2‑based traffic and enhanced FEC, aligning with the CN4200 platform’s approach to combining client signals before they enter the transport layer. The B-720-1087-421 and F10P-A90-21 identifiers place it among CN4200 aggregation options used to streamline provisioning and management of mixed-service traffic on the CN4200 platform. Operators deploy CN4200 aggregation modules to simplify service aggregation, improve transport efficiency, and integrate with CN4200 service-management workflows.