Nokia Corporation NYSE: NOK is one of the world's largest telecommunications equipment manufacturers. With headquarters in Keilaniemi of Espoo, Finland, Nokia is best known today for its leading range of mobile phones. Nokia also produces mobile phone infrastructure and other telecommunications equipment for applications such as traditional voice telephony, ISDN, broadband access, professional mobile radio, voice over IP, wireless LAN, a line of digital terrestrial television receivers and satellite receivers. Nokia provides mobile communication equipment for every major market and protocol, including GSM, CDMA, and WCDMA (UMTS).