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-12
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-12 snapshot
Work affecting this release
50 indexed Change Requests · 3 connected Work Items.
Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →
CR 0033 rev.1 — Scope for USSD over IMS
CR 0020 — Prohibition of USSI usage and identification of missing network support
CR 0020 rev.1 — Prohibition of USSI usage and identification of missing network support
CR 0022 — Introduction of network-initiated USSI, revised scope and introduction
CR 0022 rev.1 — Introduction of network-initiated USSI, revised scope and introduction
CR 0023 — Introduction of network-initiated USSI, procedures
CR 0023 rev.1 — Introduction of network-initiated USSI, procedures
CR 0023 rev.2 — Introduction of network-initiated USSI, procedures
CR 0024 — Introduction of network-initiated USSI, example flows
CR 0024 rev.1 — Introduction of network-initiated USSI, example flows
CR 0025 — Editorial amendments
CR 0026 — Corrections of network-initiated USSI request procedures and coding
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
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