Release ledger
Canonical Atlas record
TR 26.940
Study on Ultra Low Bit rate Speech Codecs
Responsible WGS4
StatusUnder change control
Initial releaseRel-20
Selected releaseRel-4
Latest indexed version20.1.0
Series26
TypeTR
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-4 snapshot
Work affecting this release
0 indexed Change Requests · 0 connected Work Items.
Showing 0 CR records from the available cross-release sample. Browse release CR records (JSON) →
Version history
Indexed versions
Showing 17 of 17 indexed versions.
20.1.0Rel-20SA#1132026-10-04
20.0.0Rel-20SA#1122026-07-10
1.0.0Rel-20 · pre-approvalSA#1122026-06-02
0.9.0Rel-20 · pre-approvalSA4#1362026-05-21
0.8.0Rel-20 · pre-approvalSA4#1362026-05-18
0.7.0Rel-20 · pre-approvalSA4#135-bis-e2026-04-17
0.6.1Rel-20 · pre-approvalSA4#1352026-03-26
0.6.0Rel-20 · pre-approvalSA4#1352026-03-26
0.5.1Rel-20 · pre-approvalSA4#1352026-02-03
0.4.0Rel-20 · pre-approvalSA4#1342025-11-11
0.2.0Rel-20 · pre-approvalSA4#1322025-07-04
0.1.0Rel-20 · pre-approvalSA4#131-bis-e2025-04-17
0.0.2Rel-20 · pre-approvalSA4#131-bis-e2025-04-17
0.0.1Rel-20 · pre-approvalSA4#131-bis-e2025-04-07
0.5.0Rel-20 · pre-approvalSA4#134—
0.4.1Rel-20 · pre-approvalSA4#134—
0.3.0Rel-20 · pre-approvalSA4#133-e—
Atlas classifications
Meaning and provenance
No Atlas classifications have been attached yet.
Work Items
Standards work connected to TR 26.940
FS_ULBC
Rel-20officialStudy on Ultra Low Bitrate Speech Codec
ULBC-MED
Rel-20parsedUltra Low Bitrate Speech Codec for IMS Voice Call over NB-IoT NTN via GEO Satellite
Knowledge graph
Related standards
No graph edges indexed yet. The graph API is available at this JSON endpoint.