JSFC Sistema and subsidiaries operates in the telecommunications, high technology, banking and other sectors, including real estate development, retail, tourism, health care and others. It operates in three business segments: telecommunications, technology and industry, and consumer assets. Its subsidiaries include MTS, which is engaged in providing wireless telecommunications services; Comstar UTS, which is engaged in providing fixed line telecommunication services, data transmission, and Internet services; Sistema Mass Media, which is engaged in cable television, advertising, production and distribution of periodicals, movie production; Concern RTI Systems, which is engaged in the manufacturing of radio technical equipment, and research and development, and Binnofarm, which produces and distributes pharmaceuticals. In October 2009, AFK Sistema OAO completed the sale of its 50.91% stake in Komstar - Obyedinennye TeleSistemy OAO to Mobile TeleSystems.