Deutsche Telekom AG, together with its subsidiaries, provides integrated telecommunication services worldwide. The company operates through five segments: Germany, United States, Europe, Systems Solutions, and Group Development. It offers fixed-network services, including voice and data communication services based on fixed-network and broadband technology; and sells terminal equipment and other hardware products, as well as services to resellers. The company also provides mobile voice and data services to consumers and business customers; sells mobile devices and other hardware products; and sells mobile services to resellers and to companies that purchases and markets network services to third parties, such as mobile virtual network operators. In addition, it offers Internet services; Internet-based TV products and services; and information and communication technology systems for multinational corporations and public sector institutions with an infrastructure of data centers and networks under the T-Systems brand, as well as call center services. The company has 178 million mobile customers, and approximately 28 million fixed-network and 20 million broadband lines. Deutsche Telekom AG was founded in 1995 and is headquartered in Bonn, Germany.