GSM is the technology that is a leader in cell phone standard in the world. In 1982 she was recognized as the standard for digital wireless communications, and was first adopted in Europe and later in Asia, Africa, etc. The first system was here in 1991, and GSM was formerly known as special mobile group, but now for the global system for mobile communications. United States, but has not yet been adopted GSM as a standard, and such Different carriers use different technologies now, not only in GSM. GSM uses digital technology and methods of time Division Multiple Access transmission. In GSM, a digital sound in advance through a special encoder that mimics the identity human speech. This method allows the transfer of very competent statistical rate content ratio. GSM is an open system and not the correctness of technology.
One of the greatest advantages of GSM is that it facilitates international roaming. As it is accepted in more than 170 countries, you have an object with your GSM cell phone at all these places without changing their numbers. GSM Satellite Roaming expanded cellular service, even in areas where standard ground service is not possible. GSM is the technology that is rapidly growing and constantly evolving with wireless, satellite and wireless systems that offer significantly expanded. These services include multi-media data services, high speed, built-in support alongside the use of these services and impeccable include using the Internet and wireline networks. 3GSM (next generation mobile communication) has mapped out, and will provide services, improving the existing voice, data and text services.
GSM will provide video-on- request and will help to reduce the gap between wireless and Internet / Computer. GSM operates on different frequency bands worldwide. In North America, he uses the 1900 MHz while in other parts of the world it uses both 900MHz and 1800 MHz. In the different frequencies used in different places, your GSM phone to support different ranges so that it can be used all over the world. From the beginning, GSM was designed with the need to provide its customers maximum safety in terms of communication, fraud prevention, as well as a call for privacy. Financial technology is often quoted as being for or against this. Today it is the most secure world public wireless standard for mobile phones. Further, in the long term relationship poyamitsya pokaleniya third (3G) and fourth connection pokaleniya (4G)