ETSI ETS 300 605 Digital cellular telecommunications system (Phase 2) (GSM); Information element mapping between Mobile Station - Base Station System (MS - BSS) and Base Station System - Mobile-services Switching Centre (BSS - MSC) signalling procedures and the Mobile Application Part (MAP) (GSM 09.10 version 4.4.1)

standard by European Telecommunications Standards Institute, 05/01/1998