Release ledger
Canonical Atlas record
TS 24.390
Unstructured Supplementary Service Data (USSD) using IP Multimedia (IM) Core Network (CN) subsystem IMS; Stage 3
Responsible WGC1
StatusUnder change control
Initial releaseRel-11
Selected releaseRel-20
Latest indexed version20.1.0
Series24
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-20 snapshot
Work affecting this release
6 indexed Change Requests · 2 connected Work Items.
Showing 6 CR records from the available cross-release sample. Browse release CR records (JSON) →
CR 0061 rev.1 — Enhancement of UE behaviour to check network-initiated USSD request format
CR 0060 — Correction on the Accept header field in the example INVITE request for USSD over IMS (USSI)
CR 0059 rev.2 — Correct <language> element Related Description in application/vnd.3gpp.ussd+xml MIME body
CR 0061 — Enhancement of UE behaviour to check network-initiated USSD request format
CR 0059 rev.1 — Correct <language> element Related Description in application/vnd.3gpp.ussd+xml MIME body
CR 0059 — Correct <language> element Related Description in application/vnd.3gpp.ussd+xml MIME body
Version history
Indexed versions
Showing 42 of 42 indexed versions.
20.1.0Rel-20CT#1132026-09-22
20.0.0Rel-20CT#1122026-06-29
19.0.0Rel-19SA#1092025-10-14
18.0.0Rel-18SA#1032024-04-05
17.0.0Rel-17CT#95-e2022-03-26
16.0.0Rel-16SA#88-e2020-07-09
15.1.0Rel-15CT#822018-12-21
15.0.0Rel-15CT#802018-06-20
14.0.0Rel-14CT#752017-03-17
13.3.0Rel-13CT#752017-03-17
12.7.0Rel-12CT#752017-03-17
13.2.0Rel-13CT#732016-09-30
12.6.0Rel-12CT#732016-09-30
11.8.0Rel-11CT#732016-09-30
13.1.0Rel-13CT#722016-06-24
12.5.0Rel-12CT#722016-06-24
11.7.0Rel-11CT#722016-06-24
13.0.0Rel-13SA#702015-12-18
12.4.0Rel-12CT#702015-12-17
12.3.0Rel-12CT#692015-09-25
11.6.0Rel-11CT#692015-09-25
12.2.0Rel-12CT#662014-12-21
12.1.0Rel-12CT#652014-09-26
12.0.0Rel-12CT#642014-06-27
11.5.0Rel-11CT#642014-06-27
11.4.0Rel-11CT#612013-09-20
11.3.0Rel-11CT#602013-06-27
11.2.0Rel-11CT#592013-03-15
11.1.0Rel-11CT#582012-12-21
1.1.1Rel-11 · pre-approval-2012-09-24
11.0.0Rel-11CT#572012-09-21
2.0.0Rel-11 · pre-approvalCT#572012-09-14
1.1.0Rel-11 · pre-approval-2012-08-17
1.0.0Rel-11 · pre-approvalCT#562012-06-15
0.7.0Rel-11 · pre-approval-2012-05-23
0.6.0Rel-11 · pre-approval-2012-02-27
0.5.1Rel-11 · pre-approval-2012-01-24
0.5.0Rel-11 · pre-approval-2012-01-05
0.4.0Rel-11 · pre-approval-2011-11-02
0.3.0Rel-11 · pre-approval-2011-09-26
0.2.0Rel-11 · pre-approval-2011-07-07
0.1.0Rel-11 · pre-approval-2011-06-15
Atlas classifications
Meaning and provenance
No Atlas classifications have been attached yet.
Work Items
Standards work connected to TS 24.390
TEI11
Rel-11parsed(Small) Technical Enhancements and Improvements for Rel-11
USSI
Rel-11officialCT1 part of Stage 3 for USSD simulation service in IMS
USSI
Rel-11officialUnstructured Supplementary Service Data (USSD) simulation service in IMS
TEI12
Rel-12parsed(Small) Technical Enhancements and Improvements for Rel-12
USSD_MS
Rel-12officialUnstructured Supplementary Service Data (USSD) method selection (Stage 3)
USSI-NET
Rel-12officialNetwork Initiated USSD Simulation Services in IMS
TEI13
Rel-13parsed(Small) Technical Enhancements and Improvements for Rel-13
eNPN
Rel-17historical linkEnhanced support of Non-Public Networks
Historical association · verification pendingIMSProtoc20-CT
Rel-20parsedIMS Stage-3 IETF Protocol Alignment
TEI20
Rel-20parsed(Small) Technical Enhancements and Improvements for Rel-20
Knowledge graph
Related standards
No graph edges indexed yet. The graph API is available at this JSON endpoint.