Digital cellular telecommunications system (Phase 2). Call Barring (CB) supplementary services. Stage 2 (GSM 03.88)
Edition 1997-07-01

Digital cellular telecommunications system (Phase 2). Radio subsystem synchronisation (GSM 05.10)
Edition 1998-04-01

Digital cellular telecommunications system (Phase 2). Modulation (GSM 05.04)
Edition 1997-10-01

Digital cellular telecommunications system (Phase 2). General on Terminal Adaptation Functions (TAF) for Mobile Stations (GSM 07.01)
Edition 1998-08-01

Digital cellular telecommunications system (Phase 2) - Performance data measurements (GSM 12.04, version 4.3.1)
Edition 2000-10-01

Digital cellular telecommunications system (Phase 2) - Base Station System (BSS) equipment specification - Part 2: signalling aspects (GSM 11.23, version 4.9.1)
Edition 2000-08-01

Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 12: supplementary services stage 3 - Sub-part 20 : discreet listening (DL) (V1.2.1)
Edition 2012-07-01

Digital cellular telecommunications system (Phase 2+) - General Packet Radio Service (GPRS) - Service description - Stage 1 (GSM 02.60 version 6.3.1 Release 1997)
Edition 2001-02-01

Digital cellular telecommunications system (Phase 2) - Subscriber and equipment trace (GSM 12.08, version 4.5.1)
Edition 2001-03-01

Digital cellular telecommunications system (Phase 2) - AT command set for GSM Mobile Equipement (ME) (GSM 07.07, version 4.4.1)
Edition 2001-06-01