On 1st July 2011, GSM services completed 20 glorious years of commercial service. It was on 1st July 1991 that the first ever GSM call was made over a commercial network in Finland. To commemorate the landmark a press release was issued by Nokia Seimens Network (NSN). The first commercial GSM network was built for the Finnish operator Radiolinja by Telenokia and Seimens and the historic first converstaion was between the Finnish Prime Minister Harri Holkeri in Helsinki and Kaarina Sounio (Mayor in the city of Tampere).
In 1987, the basic parameters of the GSM standard had been agreed upon and adopted as the standard for digital mobile technology in Europe. The second generation (2G) technology was capable of both voice and data communication and enabled the advent of services such as the SMS. The total number of subscribers worldwide for GSM services has now crossed 4.4 billion and over 1 million new subscribers join in everyday.
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