http://www.handheldlearning.co.uk/content/view/37/2/
Twenty years ago, an historic agreement was signed in Copenhagen by 15 telecommunications operators from 13 countries* that led to the development of the Global System for Mobile Communications (GSM), and a mobile communications industry that today serves more than 2.5 billion people across 218 countries and territories.
The ‘Memorandum of Understanding’ agreement of 7th September 1987 laid
the foundation for the first Europe-wide digital cellular system, which
soon became the world’s first global mobile system as used by more than
700 mobile operator. . .