What is the Chinese name of GSM?

GSM is the abbreviation of Global System for Mobile Communications, which means Global System for Mobile Communications and is one of the major cellular systems in the world. GSM is based on the narrowband TDMA standard and allows eight simultaneous calls on one radio frequency. GSM emerged in Europe in the 1980s and was put into use in 1991. By the end of 1997, it was operating in more than 100 countries and became the de facto standard in Europe and Asia. By 2001, 400 GSM communication networks had been built in 162 countries around the world. However, the capacity of the GSM system is limited. When network users are overloaded, more network facilities have to be built. It is gratifying that GSM has excellent performance in other aspects. In addition to providing standardized lists and signaling systems, it also opens some relatively intelligent services such as international roaming. The convenience of GSM mobile phone is that it provides a smart card, which is called a SIM card, and the card can be separated, which makes it very convenient for users to change mobile phones and customize personal information. GSM mobile phones also allow users to receive short messages of 160 characters in length.