Release Rel-17
5G NRExtends 5G NR to new device classes and satellite access.
Frozen 2022-03-23149 specifications in series 23
Key features: RedCap (NR-Light), NR-NTN, multicast/broadcast, XR support
All SeriesSeries 21Series 22Series 23Series 24Series 26Series 27Series 28Series 29Series 31Series 32Series 33Series 34Series 35Series 36Series 37Series 38
TS 23.903
Redial solution for voice-video switching
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 23.919
Direct tunnel deployment guideline
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 23.924
Feasibility study on Non-Access Stratum (NAS) node selection function above Base Station Controller (BSC) / Radio Network Controller (RNC)
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 23.973
User data interworking, coexistence and migration
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 23.975
IPv6 migration guidelines
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 23.976
Push architecture
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 23.977
Bandwidth And Resource Savings (BARS) and speech enhancements for Circuit Switched (CS) networks
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 23.979
3GPP enablers for Open Mobile Alliance (OMA); Push-to-talk over Cellular (PoC) services; Stage 2
Architecture
Rel-17TS5GCUpdated 2026-07-25
TS 23.981
Interworking aspects and migration scenarios for IPv4-based IP Multimedia Subsystem (IMS) implementations
Architecture
Rel-17TS5GCUpdated 2026-07-25