Nokia Corporation is a Finnish multinational communications corporation, focused on wired and wireless telecommunications, with 112,262 employees in 120 countries, sales in more than 150 countries and global annual revenue of 51.058 billion euros as of 2007. It is the world's largest manufacturer of mobile telephones: its global device market share was about 40% in Q4 of 2007. Nokia produces mobile phones for every major market segment and protocol, including GSM, CDMA, and W-CDMA (UMTS). Nokia's subsidiary Nokia Siemens Networks produces telecommunications network equipments, solutions and services.
Nokia's corporate headquarters are located in Espoo, a city neighbouring Finland's capital Helsinki. It has sites for research and development, manufacturing and sales in many continents throughout the world. Nokia employed 21,453 people in R&D in 2006. Nokia Research Center, founded in 1986, is Nokia's industrial research unit of about 800 researchers, engineers and scientists.[4