Release ledger
Canonical Atlas record
TS 22.179
Mission Critical Push to Talk (MCPTT); Stage 1
Responsible WGS1
StatusUnder change control
Initial releaseRel-13
Selected releaseRel-20
Latest indexed version21.0.0
Series22
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
13 indexed Change Requests · 3 connected Work Items.
Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →
CR 0083 rev.2 — Call forwarding for Ad hoc Group calls
CR 0082 rev.3 — Ambient listening requirements pause and resume operation
CR 0084 rev.1 — First-to-answer (Shared Functional Alias) for Ad hoc Group calls
CR 0083 rev.1 — Call forwarding for Ad hoc Group calls
CR 0081 — Enhancement of interworking with GSM-R using Ad hoc Group Calls
CR 0084 — First-to-answer (Shared Functional Alias) for Ad hoc Group calls
CR 0085 — Call hold and resume for Ad hoc Group calls
CR 0085 rev.1 — Call hold and resume for Ad hoc Group calls
CR 0081 rev.2 — Enhancement of interworking with GSM-R using Ad hoc Group Calls
CR 0082 — MCX Ambient listening requirements – pause and resume operation
CR 0082 rev.1 — Ambient listening requirements pause and resume operation
CR 0082 rev.2 — Ambient listening requirements pause and resume operation
Version history
Indexed versions
Showing 38 of 38 indexed versions.
21.0.0Rel-21SA#1132026-10-02
20.0.0Rel-20SA#1072025-03-28
19.3.0Rel-19SA#1052024-09-27
19.2.0Rel-19SA#1022023-12-22
19.1.0Rel-19SA#1012023-09-22
19.0.0Rel-19SA#1002023-06-23
18.0.0Rel-18SA#1002023-06-23
17.1.0Rel-17SA#95-e2022-04-01
17.0.0Rel-17SA#862019-12-20
16.5.0Rel-16SA#832019-03-29
16.4.0Rel-16SA#822018-12-21
16.3.0Rel-16SA#812018-09-21
16.2.0Rel-16SA#802018-06-23
16.1.0Rel-16SA#792018-04-06
16.0.0Rel-16SA#782018-01-05
15.2.0Rel-15SA#782018-01-05
15.1.0Rel-15SA#772017-09-22
15.0.0Rel-15SA#762017-06-16
14.3.0Rel-14SA#742016-12-16
14.2.0Rel-14SA#732016-09-30
14.1.0Rel-14SA#722016-06-24
14.0.0Rel-14SA#712016-03-18
13.3.0Rel-13SA#702015-12-19
13.2.0Rel-13SA#682015-06-30
13.1.0Rel-13SA#672015-03-21
13.0.1Rel-13SA#662015-01-05
13.0.0Rel-13SA#662014-12-19
2.1.0Rel-13 · pre-approvalSA#662014-12-17
2.0.0Rel-13 · pre-approvalSA#662014-12-17
1.0.0Rel-13 · pre-approvalSA#652014-09-22
0.7.0Rel-13 · pre-approval-2014-09-02
0.6.0Rel-13 · pre-approval-2014-07-22
0.4.0Rel-13 · pre-approval-2014-06-13
0.3.1Rel-13 · pre-approval-2014-02-27
0.3.0Rel-13 · pre-approval-—
0.2.0Rel-13 · pre-approval-—
0.1.0Rel-13 · pre-approval-—
0.0.1Rel-13 · pre-approval-—
Atlas classifications
Meaning and provenance
No Atlas classifications have been attached yet.
Work Items
Standards work connected to TS 22.179
DUMMY
Rel-13parsedAwaiting formal work item
MCPTT
Rel-13officialStage 1 for MCPTT
MCPTT
Rel-13officialMission Critical Push To Talk over LTE (MCPTT)
MCImp-MCPTTR
Rel-14parsedMission Critical Push to Talk over LTE Realignment
FS_FRMCS
Rel-15parsedStudy on Future Railway Mobile Communication System
MCOver
Rel-15parsedRemoval of 'over LTE' limitation from Mission Critical Specifications
MONASTERYEND
Rel-17parsedComplete Gap Analysis for Railways Mobile Communication System
TEI17
Rel-17parsed(Small) Technical Enhancements and Improvements for Rel-17
FRMCS_Ph5
Rel-19parsedStage 1 of Railways specific Enhancements to Mission Critical Services
FS_FRMCS_Ph5
Rel-19parsedStudy on FRMCS Phase 5
ALPR-REQ
Rel-20parsedStage 1 for Ambient listening enhancements including pause and resume in MCS
FRMCS_Ph6
Rel-20parsedFRMCS Phase 6
FS_FRMCS_Ph6
Rel-20parsedStudy on FRMCS Phase 6
FRMCS_Ph7-REQ
Rel-21parsedStage 1 for FRMCS Phase 7
Knowledge graph
Related standards
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