GSM was originally an acronym for Mobile Panel, namely: a combined loss of American experts who conducted the study together, to create a standard GSM. Then, the acronym GSM was replaced by the Global System for Mobile Communications. GSM has the meaning as cellular mobile telecommunications system using digital phone systems. This system has many advantages over traditional telephony and include: the sound produced becomes clearer, increases the efficiency of the frequency spectrum or the system has the optimum capacity shown by the ability of digital compression and coding of data . GSM uses encryption technology (encoding) before the voice message is sent, so data security becomes more secure. GSM operates in the 900 - 1800 MHz
Digital technology also uses the headset is very light, simple and small, as it uses a chip rate Digital Subscriber Identity Module (SIM). This technology will allow the addition of new subscribers as additional services such as voice mail, call waiting and short message service (SMS).
Cellular operators in Indonesia, which dominates the use of GSM technology include: Telkomsel, Indosat, Axis, Exelcomindo and Three.
Digital technology also uses the headset is very light, simple and small, as it uses a chip rate Digital Subscriber Identity Module (SIM). This technology will allow the addition of new subscribers as additional services such as voice mail, call waiting and short message service (SMS).
Cellular operators in Indonesia, which dominates the use of GSM technology include: Telkomsel, Indosat, Axis, Exelcomindo and Three.
