ADTRAN, Inc. is a provider of networking and communications equipment. The Company's solutions enable voice, data, video and Internet communications across a range of network infrastructures. It operates through two segments: the Carrier Networks Division and the Enterprise Networks Division. Its Carrier Networks Division supplies the network access products, services and supports that service providers require to connect their customers to transmission and switching networks. Its Enterprise Networks Division delivers a portfolio of networking and communications solutions for small and medium-sized businesses, as well as distributed enterprises. Its portfolio includes Cloud Connectivity solutions, such as Internet Protocol (IP) business gateways and access routers, which provide business access to service provider networks, and Enterprise Communications solutions, which enable businesses to construct voice, data and video networks at the customer's site or among distributed sites.