ADTRAN, Inc. provides networking and communications platforms and services for service providers, cable/multiple system operators, small- to medium-sized business, and distributed enterprises in the United States, Germany, Mexico, and internationally. The company operates through two segments, Network Solutions, and Services & Support. It offers fiber to the premises and fiber to the node (FTTN) multi-service access nodes (MSAN); fiber aggregation and FTTN MSAN; network management and subscriber services control and orchestration software; software defined networking -controlled programmable network elements; fiber to the distribution point units; optical line terminals and transport solutions; IP-based digital subscriber line access multiplexers; cabinet and outside plant enclosures and services; transceivers, cables, and other miscellaneous materials; and other products, software, and services. The company also provides broadband customer premise solutions and point-to-point Ethernet optical network terminals; radio frequency over glass micro nodes; ethernet switches for multi-gigabit local area networking; SmartOS software licensing for residential gateway and Wi-Fi devices; cloud-based SaaS management platforms; Wi-Fi-enabled residential gateway products and accessories; managed mesh Wi-Fi solutions for cloud-managed connectivity; virtual wireless local area networks for business-class Wi-Fi and management; and pre-sale and post-sale technical support. In addition, it offers planning, engineering, program management, maintenance, installation, and commissioning services. Further, the company offers time division multiplexed and asynchronous transfer mode-based aggregation systems and customer devices; and high-bit-rate digital subscriber line, asymmetric digital subscriber line, and other technologies to deliver business and residential services. ADTRAN, Inc. was incorporated in 1985 and is headquartered in Huntsville, Alabama.