European digital cellular telecommunications system (Phase 1); Mobile radio interface layer 3; Supplementary services specification; Formats and coding (GSM 04.80)

Norma vydaná dňa 1.1.1995

Digital cellular telecommunications system (Phase 2+) (GSM); Mobile radio interface layer 3; Supplementary services specification; Formats and coding (GSM 04.80)

Norma vydaná dňa 30.8.1996

European digital cellular telecommunications system (Phase 1); Mobile Radio Interface Layer 3; Call Offering Supplementary Services Specification (GSM 04.82)

Norma vydaná dňa 1.1.1995

Digital cellular telecommunications system; Closed User Group (CUG) supplementary services; Stage 3 (GSM 04.85)

Norma vydaná dňa 15.12.1996

European digital cellular telecommunications system (Phase 1); Mobile Radio Interface Layer 3; Call Offering Supplementary Services Specification (GSM 04.88)

Norma vydaná dňa 1.1.1995

Digital cellular telecommunications system (Phase 2+) (GSM); Explicit Call Transfer (ECT) supplementary service; Stage 3 (GSM 04.91)

Norma vydaná dňa 15.2.1996

Digital cellular telecommunications system (Phase 2+) (GSM); Explicit Call Transfer (ECT) supplementary service; Stage 3 (GSM 04.91)

Norma vydaná dňa 30.3.1996

Universal Personal Telecommunication (UPT); Phase 1; Requirements on Information Flows (IFs) and protocols

Norma vydaná dňa 30.9.1995

Operational energy Efficiency for Users (OEU); Adaptive and multiple output power supplies based on USB Type C with USB PD support

Norma vydaná dňa 2.6.2025

Multi-access Edge Computing (MEC); Federation enablement APIs

Norma vydaná dňa 8.2.2023