GSM Architecture OverviewWorldwide GSM deploymentTrends in mobile telecommunicationsGSM network componentsGSM identitiesGSM interfaces
The GSM Air InterfaceRadio link and user accessPhysical channels and logical channelsDifferent types of channelsFrames and channel codingCall setups using the radio channels
GSM ServicesBearer services and teleservicesPhase I, Phase II and Phase 2+Short Message Service (SMS)Supplementary Services Roaming and Call Flow ScenariosMAP protocol structureAuthentication and cipheringMobile originated callsMobile terminated callsShort Message Service (SMS)Handovers Phase 2+ and BeyondBearer and teleservices for Phase 2CAMELLocation-based servicesGPRS and UMTS
Of all technology implementations, 50% are severely challenged, 24% completely fail, and 25% succeed. The #1 reason for this is education, or lack thereof.