Release Rel-15
5G NRThe foundational 5G New Radio release, defining the NR air interface and 5G core.
Frozen 2018-06-14137 specifications in series 26
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 26.307
Presentation layer for 3GPP services
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.346
Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.347
Multimedia Broadcast/Multicast Service (MBMS); Application Programming Interface and URL
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.401
General audio codec audio processing functions; Enhanced aacPlus general audio codec; General description
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.402
General audio codec audio processing functions; Enhanced aacPlus general audio codec; Additional decoder tools
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.403
General audio codec audio processing functions; Enhanced aacPlus general audio codec; Encoder specification; Advanced Audio Coding (AAC) part
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.404
General audio codec audio processing functions; Enhanced aacPlus general audio codec; Enhanced aacPlus encoder Spectral Band Replication (SBR) part
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.405
General audio codec audio processing functions; Enhanced aacPlus general audio codec; Encoder specification parametric stereo part
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.406
General audio codec audio processing functions; Enhanced aacPlus general audio codec; Conformance testing
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.410
General audio codec audio processing functions; Enhanced aacPlus general audio codec; Floating-point ANSI-C code
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.411
General audio codec audio processing functions; Enhanced aacPlus general audio codec; Fixed-point ANSI-C code
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.412
Source code for 3GP file format
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.430
Timed graphics
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.441
Codec for Enhanced Voice Services (EVS); General overview
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.442
Codec for Enhanced Voice Services (EVS); ANSI C code (fixed-point)
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.443
Codec for Enhanced Voice Services (EVS); ANSI C code (floating-point)
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.444
Codec for Enhanced Voice Services (EVS); Test sequences
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.445
Codec for Enhanced Voice Services (EVS); Detailed algorithmic description
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.446
Codec for Enhanced Voice Services (EVS); Adaptive Multi-Rate - Wideband (AMR-WB) backward compatible functions
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26
TS 26.447
Codec for Enhanced Voice Services (EVS); Error concealment of lost packets
Codecs & Media
Rel-15TSCodecs & MediaUpdated 2026-07-26