GSM meaning

GSM full name: Global System for Mobile Communications, the world's Chinese mobile communication systems, commonly known as "GSM", originated in Europe is a mobile communication technology standard, is the second-generation mobile communication technology, and its purpose is to enable the development of the world Can be all over the joint use of a standard mobile phone network so that users will be able to use a phone line all over the world. China in the 20th century in the early 90's introduction of the use of technical standards, has been previously used analog cellular mobile technology, that is, the first generation of GSM technology (December 31, 2001 shut down our analog mobile network). At present, China Mobile, China Unicom each has a GSM network for the world's largest mobile communications network. GSM systems, including GSM 900:900 MHz, GSM1800: 1800MHz and GSM1900: 1900MHz band, and so on a few. GSM (Global System for Mobile Communications) is a widely used in Europe and other parts of the world's digital mobile phone system. GSM is used by the TDMA variant, and it is currently the number three wireless technologies (TDMA, GSM and CDMA) in one of the most widely used. GSM digital data, and data compression, and then with other users of the two data streams together from the channel sent the other two users have their own data flow slot. . In fact the European GSM standard of wireless phones, according to the GSM MoU reported that the Joint Commission, GSM in the world's 1.2 billion users, and more than 120 countries around the user. As many GSM network operators and other foreign operators have a roaming agreement, it is when the user to other countries, can continue to use their mobile phones.
Well-known U.S. telecommunications company Sprint an auxiliary branch in the United States is using GSM personal communications as a broadband personal communications services technology. This will be the ultimate personal communications services for Ericsson, Motorola, and Nokia's handset production is now set up more than 400 base stations. Handset, including telephone, walkie-talkie and pager messages.
GSM and other wireless technology is the evolution of mobile communications, mobile communications, including wireless high-speed circuit switched data, General Packet Radio System, based on the GSM network of enhanced mobile data communications technology as well as the Universal Mobile Telecommunications Service