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 24.096
Name Identification supplementary services; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.103
Telepresence using the IP Multimedia (IM) Core Network (CN) Subsystem (IMS); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.105
Application specific Congestion control for Data Communication (ACDC) Management Object (MO)
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.109
Bootstrapping interface (Ub) and network application function interface (Ua); Protocol details
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.116
Stage 3 aspects of system architecture enhancements for TV services
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.117
TV service configuration Management Object (MO)
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.135
Multicall supplementary service; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.139
3GPP system - fixed broadband access network interworking; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.141
Presence service using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.147
Conferencing using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.161
Network-Based IP Flow Mobility (NBIFOM); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.166
3GPP IP Multimedia Subsystem (IMS) conferencing Management Object (MO)
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.167
3GPP IMS Management Object (MO); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.171
Control Plane Location Services (LCS) procedures in the Evolved Packet System (EPS)
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.173
IMS Multimedia telephony communication service and supplementary services; Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.182
IP Multimedia Subsystem (IMS) Customized Alerting Tones (CAT); Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.183
IP Multimedia Subsystem (IMS) Customized Ringing Signal (CRS); Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.196
Enhanced Calling Name (eCNAM)
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.216
Communication Continuity Management Object (MO)
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.229
IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25