Adtran Networks SE develops, manufactures, and sells optical and Ethernet-based networking solutions for telecommunications carriers and enterprises, supporting data, storage, voice, and video services. Its offerings include open optical networking products, access and aggregation switches and routers, subscriber solutions, automation and insight solutions, and network infrastructure assurance. The company also provides cloud interconnect solutions and optical networking solutions. It serves Altnets, cable MSOs, municipal broadband providers, telcos, and utilities across Germany, the rest of Europe, the Middle East, Africa, the Americas, and Asia-Pacific. Formerly known as ADVA Optical Networking SE, it changed its name to Adtran Networks SE in June 2023, was founded in 1994, is headquartered in Munich, Germany, and operates as a subsidiary of ADTRAN Holdings, Inc.