Deutsche Telekom is engaged in the telecommunications services and information technology sectors. Co. operates as an integrated telecommunications provider. It is organized into four operating segments: Germany, Europe, and the United States; and Systems Solutions, as well as Group Headquarters and Shared Services. Co. provides fixed-network lines, broadband lines and mobile communications. Co. also provides customized Information and Communication Technology (ICT) solutions for corporate customers under the T-Systems brand. The Group Headquarters and Shared Services segment comprises cross-segment management functions, real estate services, and mobility solutions, among others.

Iliad is an operator in the French internet access & telecommunications markets. Co. divides its operations into three business segments: Broadband, Traditional Telephony, and Retail Telecom. Broadband includes Internet service provider operations, hosting services, user assistance operations & operations related to the rollout of the FTTH (fiber-to-the-home) network. Traditional Telephony includes switched landline telephony (One.Tel and Iliad Telecom), directory services (mainly the ANNU reverse look-up directory accessible by Minitel, telephone, Internet and SMS text messaging) and e-commerce operations (Assunet.com). Retail Telecom offers various mobile phones & services to customers.

Orange provides consumers, businesses and other telecommunications operators with a wide range of services including fixed telephony and mobile telecommunications, data transmission, Internet and multimedia, and other services. Co.'s portfolio comprises business lines (fixed-line, mobile, Internet), focusing on all customer segments (small and medium-sized businesses, multinationals), and personal and professional services for home, office, travel, and mobile. Co. manages eight operating segments: France, Poland, Spain, Rest of the Europe, Africa and Middle East, Other non-controlling equity interests, Enterprise Communication Services, and International Carriers and Shared Services.