Deutsche Telekom AG is a Germany-based integrated telecommunications provider offering its customers a portfolio of services in the areas of telecommunications and information technology (IT). The Company diversifies its activities into three geographical segments: Germany, Europe and USA; as well as operates Systems Solutions, and Group Headquarters & Shared Services operating segments. Systems Solutions operating segment provides customized ICT (Information and Communication Technology) solutions for corporate customers through T-Systems, which include Computing & Desktop Services and Systems Integration. Group Headquarters & Shared Services segment comprises management functions, among others. The Company's product portfolio comprises fixed-network lines, broadband lines, as well as mobile communication networks. The Company's USA segment provides mobile network services in the United States. In November 2013, it bought GTS Central Europe, a telecommunications service provider.