ADTRAN, Inc. is engaged in the provision of networking and communications equipment. It operates through following business segments: Carrier Networks and Enterprise Networks. The Carrier Networks segment offers broadband and optical infrastructure products and services used by service providers to deliver voice, data and video services to their customers' premises and to mobile network cell sites. The Enterprise Networks segment engages in the provision of cloud connectivity solutions. The company was founded in November 1985 and is headquartered in Huntsville, AL.