Release ledger
Canonical Atlas record
TS 23.231
SIP-I based circuit-switched core network; Stage 2
Responsible WGC4
StatusUnder change control
Initial releaseRel-8
Selected releaseRel-8
Latest indexed version19.0.0
Series23
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-8 snapshot
Work affecting this release
57 indexed Change Requests · 9 connected Work Items.
Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →
CR 0009 — IP Interface Type Indicator for SIP-I on Nc
CR 0009 rev.1 — IP Interface Type Indicator for SIP-I on Nc
CR 0010 — Call Hold for SIP-I on Nc
CR 0010 rev.1 — Call Hold for SIP-I on Nc
CR 0011 — Bearer Establishment for Multiparty Bearers
CR 0011 rev.1 — Bearer Establishment for Multiparty Bearers
CR 0012 — CS Data and Facsimile Updates
CR 0013 — Call Hold Service
CR 0014 — Multiparty Service Encoding
CR 0017 — Support of CS CAT in CSCN
CR 0018 — Call Release
CR 0018 rev.1 — Call Release
Version history
Indexed versions
Showing 23 of 23 indexed versions.
19.0.0Rel-19SA#1092025-10-08
18.0.0Rel-18SA#1032024-04-08
17.0.0Rel-17SA#95-e2022-04-01
16.0.0Rel-16SA#88-e2020-07-08
15.0.0Rel-15SA#802018-06-22
14.0.0Rel-14CT#752017-03-21
13.0.0Rel-13SA#702015-09-25
12.0.0Rel-12CT#622013-12-17
11.1.1Rel-11CT#542012-11-15
11.1.0Rel-11CT#542011-12-19
11.0.0Rel-11CT#532011-09-26
10.0.0Rel-10CT#512011-04-04
9.0.0Rel-9SA#462009-12-18
8.4.0Rel-8CT#442009-06-08
8.3.0Rel-8CT#432009-03-25
8.2.0Rel-8CT#422008-12-16
8.1.0Rel-8CT#412008-09-23
8.0.0Rel-8CT#402008-06-09
2.0.0Rel-8 · pre-approvalCT#402008-06-06
1.0.0Rel-8 · pre-approvalCT#392008-03-20
0.2.0Rel-8 · pre-approval-2007-11-19
0.1.0Rel-8 · pre-approval-2007-10-22
0.0.0Rel-8 · pre-approval-2007-09-24
Atlas classifications
Meaning and provenance
No Atlas classifications have been attached yet.
Work Items
Standards work connected to TS 23.231
NcSIP
Rel-7officialStudy on Support of (G)MSC-S - (G)MSC-S Nc Interface based on the SIP-I protocol
AoIP
Rel-8historical linkAoIP (A-interface over IP)
Historical association · verification pendingAoIP-CN
Rel-8historical linkCT4 part of Core Network Impacts for A-Interface User Plane over IP
Historical association · verification pendingAoIP-CN
Rel-8historical linkCore Network Impacts for A-Interface User Plane over IP
Historical association · verification pendingCAT
Rel-8historical linkCustomized Alerting Tone (CAT) service
Historical association · verification pendingCAT-3G_CS
Rel-8historical linkCT4 part of CAT Service in 3GPP CS domain
Historical association · verification pendingCAT-3G_CS
Rel-8historical linkCAT Service in 3GPP CS domain
Historical association · verification pendingSIP_Nc
Rel-8historical linkSupport of (G)MSC-S (G)MSC-S Nc Interface based on the SIP-I protocol
Historical association · verification pendingSIP_Nc-St2
Rel-8officialSIP-I based circuit-switched core network; Stage 2
TEI8
Rel-8parsed(Small) Technical Enhancements and Improvements for Rel-8
CS-IBCF
Rel-9historical linkCT4 aspects of CS-IBCF and CS-TrGW definition in 3GPP specifications
Historical association · verification pendingLCLS-CN
Rel-10historical linkStage 2/3 for CN aspects of Local Call Local Switch
Historical association · verification pendingLCLS-CN
Rel-10historical linkTR on CN aspects of Local Call Local Switch
Historical association · verification pendingTEI10
Rel-10parsed(Small) Technical Enhancements and Improvements for Rel-10
ACR_CS-CN
Rel-11historical linkCT4 part of Core Network aspects of Anonymous Call Rejection in the CS domain (Stage 2/3)
Historical association · verification pendingTEI12
Rel-12parsed(Small) Technical Enhancements and Improvements for Rel-12
Knowledge graph
Related standards
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