My first experience was at a NOC (Network Operating Center). Before going into details of that I would like to give a brief on 2G and 3G.
What is GSM?
First let’s look at what it stands for, Global System for Mobile Communications: originally from Groupe Spécial Mobile. Key elements of the GSM network are as follows.
GSM is used to describe
technologies for Second Generation (2G) digital cellular networks. First
Generation (1G) is an analog cellular network. In 2G standard originally
described a digital, circuit switched network optimized for full duplex voice
telephony. It was further developed for packet data transfer via GPRS (General
Packet Radio Services). EDGE (Enhanced Data rates for GSM Evolution) gives more
increase in data transfer. Later 3G was introduced.
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