MOBILE COMMUNICATIONS

GSM

Global System for Mobile communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for Mobile phones in the world. Its promoter, the GSMASSOCIATION, estimates that 82% of the global mobile market uses the standard (1). GSM is used by over 2 BILLION people across more than 212 countries and territories. Its ubiquity makes international roaming very common between mobile phone operators, enabling subscribers to use their phones in many parts of the world. GSM differs from its predecessors in that both signaling and speech channels are digital call, and so is considered a second generation (2g) mobile phone system. This has also meant that data communication were built into the system using the 3rd generation.
NOTE
I m going to put question answeres releated to mobile - communications/computing in details in this blog ,all the areas will be covered acordin to syllabus.