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 22.088
Call Barring (CB) supplementary services; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.090
Unstructured Supplementary Service Data (USSD); Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.091
Explicit Call Transfer (ECT) supplementary service; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.093
Completion of Calls to Busy Subscriber (CCBS); Service description, Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.094
Follow Me service description; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.096
Name identification supplementary services; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.097
Multiple Subscriber Profile (MSP) Phase 2; Service description; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.101
Service aspects; Service principles
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.105
Services and service capabilities
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.115
Service aspects; Charging and billing
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.135
Multicall; Service description; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.140
Multimedia Messaging Service (MMS); Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.141
Presence service; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.142
Value Added Services (VAS) for Short Message Service (SMS) requirements
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.146
Multimedia Broadcast/Multicast Service (MBMS); Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.153
Multimedia priority service
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.173
IP Multimedia Core Network Subsystem (IMS) Multimedia Telephony Service and supplementary services; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.174
Push Service; Service aspects; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.179
Mission Critical Push to Talk (MCPTT); Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25
TS 22.182
Customized Alerting Tones (CAT) requirements; Stage 1
Service
Rel-15TS3GPP ServicesUpdated 2026-07-25