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![GSM - Wikipedia, the free encyclopedia](https://www.iarticlesnet.com/pub/img/site/s_27.jpeg)
GSM - Wikipedia, the free encyclopedia
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日期:2024-08-01
GSM (Global System for Mobile Communications, originally Group Spécial Mobile), is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe protocols for second generation (2G) ......看更多