Keep high-speed access links stable with a 25GBASE-BX SFP28 designed for single-fiber, bidirectional operation. The AddOn 3HE15379AB-AO gives infrastructure teams a compatible path for Alcatel-Lucent Nokia environments while preserving the 25 GbE throughput needed for aggregation, server uplinks, and dense campus deployments. TAA compliance makes this module a practical fit for public sector and regulated procurement workflows, while the BX design helps reduce fiber count compared with duplex optics. That matters when you are scaling ports across crowded racks or extending links where cable plant efficiency affects both cost and deployment speed. Built as an AddOn Networks compatible transceiver, this module is intended for teams that want verified interoperability without paying OEM pricing for every port. It is a straightforward choice when the requirement is not just speed, but repeatable deployment, sourcing flexibility, and a clean fit into existing optical infrastructure.