GSM History

GSM stands for Global System for Mobile Communication and was develop by European Telecommunications Standards Institute (ETSI) and it describes all public protocols to be used on the second generation for digital networks (2G).

GSM Architecture Entities

GSM Components Explained

GSM Components Explained

GSM Interfaces

GSM Interfaces

GSM Protocol Stack

GSM Channels

GSM Channels

GSM Codes

SIM Card Identifiers

IMEI IMEI-SV , MEID and PEI (5G)