Bharti Airtel provides telecommunication systems and services to individuals and businesses in India with operations in 20 countries across Asia and Africa. In India, Co.'s product offerings include 2G, 3G and 4G wireless services, mobile commerce, fixed line services, high speed DSL broadband, IPTV, DTH, enterprise services including national & international long distance services to carriers. In the rest of the geographies, it offers 2G, 3G wireless services and mobile commerce. Co. had nearly 287 million customers across its operations at the end of Dec 2013.

BT is a communications services company, delivering products and services with industry-specific communications solutions and consulting expertise. Co.'s principal activities include: networked IT services; local, national and international telecommunications services; broadband and internet products and services; and converged fixed/mobile products and services. Co. operates five lines of businesses: BT Global Services, BT Business, BT Consumer, BT Wholesale and Openreach, providing services to around 6,500 large corporate and public sector customers, in more than 170 countries worldwide.

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.

Idea Cellular provides Global System for Mobile Communications (GSM) based mobile services and related telephony services to individuals and businesses in India. The company operates through three segments: Mobility Services, which provides GSM based mobile and related telephony services; International Long Distance (ILD), which provides international long distance services; and Passive Infrastructure, which provides passive infrastructure services. Co. offers 2G and 3G services that comprise roaming arrangements; ILD and other services; and a range of mobile broadband devices, including dongles and 3G smartphones that provide 3G applications and data services.