ETSI TS 100 605 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 6.1.

standard by European Telecommunications Standards Institute, 07/01/1999