GSFI

The Global System for Mobile Communications (GSM) is a digital mobile phone system that is widely used around the world. It was developed by the European Telecommunications Standards Institute (ETSI) and is the most widely used standard for mobile phones in the world. GSM uses a combination of time division multiple access (TDMA) and frequency division multiple access (FDMA) to allow multiple users to share the same frequency band.

GSM operates in the 900 MHz and 1800 MHz frequency bands, and it supports data transmission speeds of up to 9.6 kbps. It also supports Short Message Service (SMS), which allows users to send and receive text messages. GSM is known for its security features, including encryption and authentication, which help to protect user data and prevent unauthorized access to the network.

GSM is used by many mobile network operators around the world, including those in Europe, Asia, Africa, and the Americas. It has been a major driver of the growth of the mobile phone industry, and it has enabled the development of a wide range of mobile services and applications.

The Global System for Mobile Communications (GSM) is a digital mobile phone system that is widely used around the world. It was developed by the European Telecommunications Standards Institute (ETSI) and is the most widely used standard for mobile phones in the world. GSM uses a combination of time division multiple access (TDMA) and frequency division multiple access (FDMA) to allow multiple users to share the same frequency band.

GSM operates in the 900 MHz and 1800 MHz frequency bands, and it supports data transmission speeds of up to 9.6 kbps. It also supports Short Message Service (SMS), which allows users to send and receive text messages. GSM is known for its security features, including encryption and authentication, which help to protect user data and prevent unauthorized access to the network.

GSM is used by many mobile network operators around the world, including those in Europe, Asia, Africa, and the Americas. It has been a major driver of the growth of the mobile phone industry, and it has enabled the development of a wide range of mobile services and applications.