ADTRAN Holdings, Inc. develops and provides network access solutions. It is a global provider of open, disaggregated networking and communications equipment that enable voice, data, video and internet communications across any network infrastructure. It operates through the Network Solutions and Services and Support segments. The Network Solutions segment offers hardware and software products. The Service and Support segment manages a comprehensive portfolio of network design, implementation, maintenance and cloud-hosted services supporting its subscriber, access and aggregation, and optical networking solutions. The company was founded in 1985 and is headquartered in Huntsville, AL.