Ericsson in one of the largest supplier of mobile systems in the world. They support all major standards for wireless communication. Ericsson drives the telecoms industry and is shaping the future of telecommunication. The world´s 10 largest mobile operators are among Ericsson's customers, and some 40% of all mobile calls are made through its systems. Ericsson has been active worldwide since 1876, and is available in more than 140 countries. Their headquarters are located in Stockholm, Sweden.