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GSM

GSM or Global System for Mobile communication is usually used in different parts of the world for their cell phones. It is a digital system that uses different kinds of TDMA or Time Division Multiple Access. It digitizes and compresses data and sends it through a channel with other streams of data each with its own time slot.

GSM is widely used; some GSM network operators have roaming agreements with other foreign operators that would allow the owner of the cell phone to continue using their cell phone when they are of their country.





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