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What is GSM?
GSM (Global System for Mobile communication) is a digital mobile telephone system that is widely used in Europe and other parts of the world. GSM uses a aberration of Time Division Multiple Access (TDMA) and is the best broadly acclimated of the three agenda wireless blast technologies (TDMA, GSM, and CDMA). GSM digitizes and compresses data, again sends it bottomward a approach with two added streams of user data, anniversary in its own time slot. It operates at either the 900 MHz or 1,800 MHz abundance band.
GSM is the de facto wireless blast accepted in Europe. GSM has over one billion users common and is accessible in 190 countries. Since abounding GSM arrangement operators accept adrift agreements with adopted operators, users can generally abide to use their adaptable phones back they biking to added countries.
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