Write short note on GMS phone

1.	Write short note on GMS phone
Answer» bal System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation (2G) digital cellular networks used by mobile devices such as mobile phones and tablets. It was first deployed in Finland in DECEMBER 1991. By the mid-2010s, it became a global standard for mobile communications achieving over 90% MARKET SHARE, and operating in over 193 countries and territories.2G networks developed as a REPLACEMENT for first generation (1G) analog cellular networks. The GSM standard originally described a digital, circuit-switched network optimized for full duplex voice telephony. This expanded over time to include data communications, first by circuit-switched transport, then by packet data transport via General Packet Radio Service (GPRS), and Enhanced Data Rates for GSM Evolution (EDGE).

Discussion