Release ledger
Canonical Atlas record
TS 26.253
Codec for Immersive Voice and Audio Services (IVAS); Detailed Algorithmic Description including RTP payload format and SDP parameter definitions
Responsible WGS4
StatusUnder change control
Initial releaseRel-18
Selected releaseRel-18
Latest indexed version19.3.0
Series26
TypeTS
Release evolution
Compare evidence between releases
Use indexed version, Work Item and Change Request evidence to see what changed around this specification. This is an evidence trail, not a clause-by-clause normative diff.
Rel-18 snapshot
Work affecting this release
55 indexed Change Requests · 4 connected Work Items.
Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →
CR 0033 rev.1 — Correction to Annex A on SR-ToC D-bit
CR 0034 — Corrections to the IVAS algorithmic description
CR 0031 rev.1 — Updates to the IVAS algorithmic description
CR 0025 rev.1 — Updates to the IVAS algorithmic description
CR 0016 rev.4 — Further corrections to Annex A
CR 0029 — Corrections to TS 26.253 Annex A
CR 0027 — Correcting references to fixed-point specification
CR 0018 — Corrections to the IVAS algorithmic description
CR 0015 — Corrections to the IVAS algorithmic description
CR 0012 — Corrections to the IVAS algorithmic description
CR 0010 — Corrections to the IVAS detailed algorithmic description (TS 26.253)
CR 0007 rev.2 — Corrections to Payload Format parameters
Version history
Indexed versions
Showing 20 of 20 indexed versions.
19.3.0Rel-19SA#1122026-07-05
18.9.0Rel-18SA#1122026-07-05
19.2.0Rel-19SA#1112026-03-23
18.8.0Rel-18SA#1112026-03-23
18.7.1Rel-18SA#1102026-01-28
19.1.0Rel-19SA#1102026-01-11
18.7.0Rel-18SA#1102026-01-11
19.0.0Rel-19SA#1092025-10-22
18.6.0Rel-18SA#1092025-10-05
18.5.0Rel-18SA#1082025-07-03
18.4.0Rel-18SA#1072025-03-29
18.3.0Rel-18SA#1062025-01-11
18.2.0Rel-18SA#1052024-10-03
18.1.1Rel-18SA#1042024-08-12
18.1.0Rel-18SA#1042024-07-08
18.0.0Rel-18SA#1032024-04-09
2.0.0Rel-18 · pre-approvalSA#1032024-03-01
1.1.0Rel-18 · pre-approvalSA4#1272024-02-27
0.1.0Rel-18 · pre-approvalSA4#1262024-01-24
1.0.0Rel-18 · pre-approvalSA#1022023-12-06
Atlas classifications
Meaning and provenance
No Atlas classifications have been attached yet.
Work Items
Standards work connected to TS 26.253
ISAR
Rel-18parsedImmersive Audio for Split Rendering Scenarios
IVAS_Codec
Rel-18parsedEVS Codec Extension for Immersive Voice and Audio Services
IVAS_Codec
Rel-18officialEVS Codec Extension for Immersive Voice and Audio Services
TEI18
Rel-18parsed(Small) Technical Enhancements and Improvements for Rel-18
IVAS_Codec_Ph2
Rel-19parsedEVS Codec Extension for Immersive Voice and Audio Services, Phase 2
Knowledge graph
Related standards
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