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 24.483
Mission Critical Services (MCS) Management Object (MO)
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.484
Mission Critical Services (MCS) configuration management; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.501
Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.502
Access to the 3GPP 5G Core Network (5GCN) via non-3GPP access networks
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.523
Core and enterprise Next Generation Network (NGN) interaction scenarios; Architecture and functional description
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.524
Hosted enterprise services; Architecture, functional description and signalling
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.525
Business trunking; Architecture and functional description
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.526
User Equipment (UE) policies for 5G System (5GS); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.581
Mission Critical Video (MCVideo) media plane control; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.582
Mission Critical Data (MCData) media plane control; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.604
Communication Diversion (CDIV) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.605
Conference (CONF) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.606
Message Waiting Indication (MWI) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.607
Originating Identification Presentation (OIP) and Originating Identification Restriction (OIR) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.608
Terminating Identification Presentation (TIP) and Terminating Identification Restriction (TIR) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.610
Communication HOLD (HOLD) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.611
Anonymous Communication Rejection (ACR) and Communication Barring (CB) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.615
Communication Waiting (CW) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol Specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.616
Malicious Communication Identification (MCID) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.623
Extensible Markup Language (XML) Configuration Access Protocol (XCAP) over the Ut interface for Manipulating Supplementary Services
Protocol
Rel-15TSIMSUpdated 2026-07-25