GSM (Global System for Mobile communication) provides services to more than 500 million users across 168 countries worldwide. By describing the important decisions and development phase of key text explains how the GSM initiative became a success in Europe and how it evolved into a global communication system mobile. Presents a complete technical history of the development of GSM and UMTS evolution Clarification beginning to the creation of early second-generation GSM system in BANS GSM, the evolution to a generation 2.5 system in ETSI SMG and the evolution to Third Generation (UMTS) in ETSI SMG and 3GPP Includes all services and system features together with working methods and organizational aspects of GSM and UMTS provides an interesting and informative read and will appeal to all people involved in the mobile communications market need to know how GSM and UMTS technologies evolved. CD-ROM that accompanies provides reference documents nearly 500, including reports of all meetings of the plenary standardization, strategy documents, key decisions, the GSM Memorandum of Understanding and the report of the UMTS Task Force.