AT&T is a telecommunications company that provides wireless communications, local exchange, and long-distance services for consumers and businesses in the United States and internationally.The company offers its services in two segments: wireless and wireline. Its wireless segment offers various wireless voice, data, text, and otherservices. This segment sells various handsets, wirelessly-enabled computers, and wireless data cards for personal computers through its owned stores, agents, and third-party retail stores. It also sells accessories comprising carrying cases, hands-free devices, batteries, battery chargers, and other items to consumers as well as to agents and third-party distributors. As of December 31, 2013, this segment served approximately 110 million wireless subscribers.The company’s wireline segment provides data services such as switched and dedicated transport, DSL internet access, network integration, managed web hosting, packet, and enterprise networking services as well as local, interstate, and international wholesale networking capacity solutions to other service providers. This segment also offers voice services consisting of local and long-distance services; wholesale switched access services to other service providers; and outsourcing and integration services as well as CPE and government-related services. This segment has served approximately 12 million retail consumers, 10 million retail businesses, and 2 million wholesale access lines.AT&T is headquartered in Dallas, Texas.