Hello I am Emad Salem telecommunication engineer in Egypt about 13 years experience worked for Huawei , NOKIA , Ericsson worked in Egypt and KSA telecommunication instructor for 10 years in this course we will learn together all about 2nd generation radio signal between site and mobile station , it is mandatory to follow it with 3G Basics course , 4G Basics Course and 5G Basics Course.in this course we will learn how voice signal is converted from sound wave to electrical signal then to digital bits then to electromagnetic wave.then we will learn about 2G Access Technique TDMA over FDMA and after this we will learn about 2nd generation network architecture we will know what is role of base station system and base station controller what is core network and briefly what the role of every node in itthen we will learn about 2G Cannels , logical channels , physical channels and how ti transfer in air interface and in which resources then we will know everything about Call scenario or 2G Call flow ,which messages are transferred between site and mobile station until call startsthen we will learn about 2G HO Scenario and all messages between Mobile station , base station system and base station controller until hand over is donemore and more information will be offered in this course