Adtran Networks SE engages in the development, manufacture, and sale of optical and Ethernet-based networking solutions for telecommunications carriers and enterprises to deliver data, storage, voice, and video services. The company offers open optical transport solutions, such as FSP 3000 open terminals, FSP 3000 open line systems, and pluggables and subsystems; network infrastructure assurance solutions; fiber access and aggregation solutions; and residential solutions, such as optical network terminals, mesh Wi-Fi gateways and satellites, and cloud managed Wi-Fi solutions. It also provides enclosures and cabinets; business solutions, including access routers and IP gateways, enterprise switching, enterprise wireless, packet edge, and network virtualization; cloud software comprising management and orchestration solutions, and SaaS applications; timing and synchronization solutions; and services, such as consulting and education, deployment, cloud and software, support, and training services, as well as technology services. The company sells its products to telecommunications service providers, private companies, universities, and government agencies through a network of distribution partners. It operates in Germany, rest of Europe, the Middle East, Africa, the Americas, and the Asia-Pacific. The company was formerly known as ADVA Optical Networking SE and changed its name to Adtran Networks SE in June 2023. The company was founded in 1994 and is headquartered in Munich, Germany. Adtran Networks SE operates as a subsidiary of ADTRAN Holdings, Inc.