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Global System of Mobile communication,gsm

Source: Internet
Author: User
Keywords Mobile phones communication systems think that the second generation the present
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Global System of Mobile communication,gsm

The global Mobile http://www.aliyun.com/zixun/aggregation/11496.html > Communication System, proposed by the European Telecommunication Standardization Association, was developed as the most widely used 8200.html "> Mobile phone Standard, There are three kinds of systems including GSM, DCS1800 and PCS1900. Currently, more than 1 billion people in more than 200 countries and regions in the world use GSM telephones. The biggest difference between GSM and the previous standard is that its signaling and voice channel are digital, so it is considered to be the second generation (2G) mobile phone system GSM is an open standard currently developed by 3GPP.

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