Release Rel-15
5G NRThe foundational 5G New Radio release, defining the NR air interface and 5G core.
Frozen 2018-06-141,188 specifications
Key features: First 5G NR specifications, NSA and SA architectures
All SeriesSeries 21Series 22Series 23Series 24Series 26Series 27Series 28Series 29Series 31Series 32Series 33Series 34Series 35Series 36Series 37Series 38
TS 24.007
Mobile radio interface signalling layer 3; General Aspects
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.008
Mobile radio interface Layer 3 specification; Core network protocols; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.010
Mobile radio interface layer 3; Supplementary services specification; General aspects
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.011
Point-to-Point (PP) Short Message Service (SMS) support on mobile radio interface
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.022
Radio Link Protocol (RLP) for circuit switched bearer and teleservices
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.030
Location Services (LCS); Supplementary service operations; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.067
Enhanced Multi-Level Precedence and Pre-emption service (eMLPP); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.072
Call Deflection (CD) supplementary service; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.080
Mobile radio interface layer 3 supplementary services specification; Formats and coding
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.081
Line Identification supplementary services; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.082
Call Forwarding (CF) supplementary services; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.083
Call Waiting (CW) and Call Hold (HOLD) supplementary services; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.084
Multi Party (MPTY) supplementary service; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.085
Closed User Group (CUG) supplementary service; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.086
Advice of Charge (AoC) supplementary services; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.087
User-to-User Signalling (UUS) Supplementary Service; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.088
Call Barring (CB) supplementary service; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.090
Unstructured Supplementary Service Data (USSD); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.091
Explicit Call Transfer (ECT) supplementary service; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.093
Completion of Calls to Busy Subscriber (CCBS); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25