ADTRAN, Inc. designs, manufactures, markets, and services communications network solutions that enable voice, data, video, and Internet communications across wireline and wireless networks worldwide. Its Carrier Networks division provides fiber and copper-based solutions for service providers to deliver voice, data, and video services to customers’ premises and mobile network cell sites. Its products enable services, such as voice, VoIP, IP television, RF video, high speed Internet access, and data services based upon Ethernet, frame relay, TDM, and ATM networks, connecting the network with user components, such as switches, routers, gateways, integrated access devices (IADs), private branch exchanges (PBXs), and telephone key systems. This division serves local exchange carriers, independent operating companies, competitive local exchange carriers, utilities, municipalities, cable MSOs, international carriers, and wireless service providers. The company’s Enterprise Networks division provides Internetworking solutions for enterprise customers to construct voice, data, and video networks within their sites or among distributed sites. It offers Internetworking solutions, including IP business gateways, optical network terminals, virtual wireless LAN products, multi-service routers, managed Ethernet switches, IP PBX products, IP phone products, unified communications and unified threat management solutions, and carrier Ethernet network terminating equipment, as well as provides IADs. This division serves the retail, food service, healthcare, finance, government, education, manufacturing, military, transportation, hospitality, and energy/utility markets. ADTRAN, Inc. also provides digital data service and integrated services digital network products, high bit-rate digital subscriber line products, T1/E1/T3, channel service units/data service units, and fixed wireless products. The company was founded in 1985 and is headquartered in Huntsville, Alabama.

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