Digital cellular telecommunications system (Phase 2+) - Specification of the Subscriber Identity Module - Mobile Equipment (SIM-ME) interface (Endorsement of the English version ETS 300977:1998-12 as German standard)
Edition 2001-06

Digital cellular telecommunications system (Phase 2 & Phase 2+) - Base Station System (BSS) equipment specification - Radio aspects (GSM 11.21 V 8.2.1)
Edition 2005-11-01

Digital cellular telecommunications system (phase 2). Principles of telecommunication services supported by a GSM public land mobile network (PLMN) (GSM 02.01)
Edition 1996-08-01

European digital cellular telecommunications system (phase 2). Bearer services (bs) supported by a GSM public land mobile network (PLMN) (GSM 02.02)
Edition 1995-12-01

European digital cellular telecommunications system (phase 2). Teleservices supported by a GSM public land mobile network (PLMN) (GSM 02.03)
Edition 1995-12-01

European digital cellular telecommunications system (phase 2). General on supplementary services (GSM 02.04)
Edition 1995-12-01

Digital cellular telecommunications system (phase 2). Types of mobile stations (MS) (GSM 02.06)
Edition 1996-08-01

Digital cellular telecommunications system (phase 2). Mobile stations (MS) features (GSM 02.07)
Edition 1996-08-01

European digital cellular telecommunications system (phase 2). Security aspects (GSM 02.09)
Edition 1996-08-01

Digital cellular telecommunications system (Phase 2). Service accessibility (GSM 02.11)
Edition 1997-05-01