As the first generation of cellular phone systems How to let module analog input channels to communicate using a frequency divider channel. With this method, a small limitation on the number of channels. Jam's expanding number and extended-band cellular phone is also large. Use power from
Change from radio waves transmitted by analogue into Digital encoding sent by the waves of this era, which is in the Microwave era began, we started to work on the Data obtained, in addition to the Active Voice alone. -Contact information, and links to even more effectively to determine the path to the base station or cell site called and causing a GSM (Global System for Mobilization) (not the service name!) Also known as Roaming
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