Specification methodology applied to the GSM system

An insight is provided into the methodology applied to the CEPT GSM (Groupe Special Mobile) pan-European digital cellular mobile radio system. A description is given of how decisions and system requirements have shaped the specification methodology. The approach is based on proven practice used in other international specifications. The GSM has supplemented the practice with a comprehensive review procedure. The principal goal now is the complete validation of the mandatory interfaces. This activity will then form the final component of the GSM specification methodology