GSM
The GSM mobile communications network is also known as the 2G network. 2G means it was the second generation after the first-generation analog standard, which in Germany included the A, B and C networks. The original plan for the GSM network was to replace analog mobile networks. Global System for Mobile Communications was released in 1990 as a new mobile communications standard and served mobile networks that were digital capable. GSM quickly became the new mobile communications standard worldwide. In addition to telephony, the GSM network was also used for short messages and packet data transmission. In the meantime, there was already a successor in the form of 3G (UMTS), which has already been superseded by 4G (LTE) and currently by the fifth generation, the 5G standard, although some of the earlier generations are still in operation.