2G Optimization course " " the course include:-Idle Mode Behavior-Handover-HCS (Hierarchical Cell Structure)-Concentric & Multi Band Cells-CLS ( Cell Load Sharing)-Frequency Hopping-Intra Cell Handover-Dynamic HR Allocation-Power Control-GSM to UMTS Cell Reselection and Handover-Trouble Shooting and KPIs monitoring. 2G is short for second-generation cellular network. 2G cellular networks were commercially launched on the GSM standard in Finland by Radiolinja (now part of Elisa Oyj) in 1991.2G technologies enabled the various networks to provide services such as text messages, picture messages, and MMS (multimedia messages).After 2G was launched, the previous mobile wireless network systems were retroactively dubbed 1G. While radio signals on 1G networks are analog, radio signals on 2G networks are digital. Both systems use digital signaling to connect the radio towers (which listen to the devices) to the rest of the mobile system. With General Packet Radio Service (GPRS), 2G offers a theoretical maximum transfer speed of 40 kbit/s (5 kB/s). With EDGE (Enhanced Data Rates for GSM Evolution), there is a theoretical maximum transfer speed of 384 kbit/s (48 kB/s).