GSM Basic Introduction_HPHGSM Basics, An IntroductionQMD Field Training Event Queensferry Microwave Division Updated by Angela Cairns November 19981997 Hewlett-Packard Company10001506.samGSM Basics, An IntroductionHGSM Basics, An IntroductionGS2 3 5 6M1 4 78 * 9 0#GSM900 DCS1800 PCS1900HQueensferry Microwave DivisionThe Global System for Mobile communications (GSM) is a huge, rapidly expanding and successful technology. Less than five years ago, there were a few 10's of companies working on GSM. Each of these companies had a few GSM experts who brought knowledge back from the European Telecommunications Standards Institute (ETSI) committees designing the GSM specification. Now there are 100's of companies working on GSM and 1000's of GSM experts. GSM is no longer state-of-the-art. It……