Canonical Atlas record

TS 24.173

IMS Multimedia telephony communication service and supplementary services; Stage 3

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Responsible WGC1

StatusUnder change control

Initial releaseRel-7

Selected releaseRel-15

Latest indexed version19.0.0

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.

Release ledger

Version · WI · CR evidence by release

Rel-4no version indexed1 WI0 CRs

Rel-5no version indexed1 WI0 CRs

Rel-77.9.05 WI95 CRs · 27 approved

Rel-88.6.011 WI39 CRs · 17 approved

Rel-99.1.04 WI16 CRs · 3 approved

Rel-1010.0.03 WI9 CRs · 1 approved

Rel-1111.5.02 WI20 CRs · 8 approved

Rel-1212.3.03 WI37 CRs · 9 approved

Rel-1313.1.01 WI8 CRs · 2 approved

Rel-1414.3.01 WI24 CRs · 6 approved

Rel-1515.4.00 WI38 CRs · 13 approved

Rel-1616.2.01 WI11 CRs · 4 approved

Rel-1717.2.04 WI12 CRs · 4 approved

Rel-1818.0.04 WI6 CRs · 2 approved

Rel-1919.0.00 WI0 CRs

Rel-15 snapshot

Work affecting this release

38 indexed Change Requests · 0 connected Work Items.

Showing 12 CR records from the available cross-release sample. Browse release CR records (JSON) →

CR 0133 — Removal of EN on RequestTimeout timer

CR 0131 rev.1 — TCP use for EPS fallback when N26 is missing

CR 0131 rev.2 — TCP use for EPS fallback when N26 is missing

CR 0123 rev.2 — UE behaviour for MO MMTel voice call when service request failure

CR 0134 — Correct PS Data Off requirements for other accesses

CR 0130 — No unified access control check when adding or removing media during MMTEL session

CR 0130 rev.1 — No unified access control check when adding or removing media during MMTEL session

CR 0129 rev.2 — T3325 notification in Annex M

CR 0124 — SSC mode 1 for mmtel services

CR 0129 rev.1 — T3325 notification in Annex M

CR 0131 — TCP use for EPS fallback when N26 is missing

CR 0123 rev.1 — UE behaviour on congestion for MO MMtel voice call

Version history

Indexed versions

Showing 58 of 58 indexed versions.

19.0.0Rel-19SA#1092025-10-14

18.0.0Rel-18CT#98-e2023-01-02

17.2.0Rel-17CT#95-e2022-03-24

17.1.0Rel-17CT#92-e2021-06-27

17.0.0Rel-17CT#90-e2020-12-18

16.2.0Rel-16CT#862019-12-19

16.1.0Rel-16CT#852019-09-24

15.4.0Rel-15CT#852019-09-24

16.0.0Rel-16CT#842019-06-14

15.3.0Rel-15CT#822018-12-20

14.3.0Rel-14CT#822018-12-20

15.2.0Rel-15CT#812018-09-19

15.1.0Rel-15CT#802018-06-20

15.0.0Rel-15CT#782017-12-28

14.2.0Rel-14CT#752017-03-17

14.1.0Rel-14CT#732016-09-30

14.0.0Rel-14CT#722016-06-24

13.1.0Rel-13CT#722016-06-24

13.0.0Rel-13CT#682015-06-26

12.3.0Rel-12CT#662014-12-21

12.2.0Rel-12CT#652014-09-26

12.1.0Rel-12CT#642014-06-27

12.0.0Rel-12CT#622013-12-20

11.5.0Rel-11CT#592013-03-15

11.4.0Rel-11CT#582012-12-21

11.3.0Rel-11CT#572012-09-21

11.2.0Rel-11CT#552012-03-16

11.1.0Rel-11CT#542011-12-20

11.0.0Rel-11CT#532011-09-28

10.0.0Rel-10CT#492010-09-28

9.1.0Rel-9CT#472010-03-31

9.0.0Rel-9CT#462009-12-17

8.6.0Rel-8CT#462009-12-17

8.5.0Rel-8CT#442009-06-08

7.9.0Rel-7CT#442009-06-08

8.4.0Rel-8CT#432009-03-20

7.8.0Rel-7CT#432009-03-20

8.3.0Rel-8CT#422008-12-17

7.7.0Rel-7CT#422008-12-17

8.2.0Rel-8CT#412008-09-24

7.6.0Rel-7CT#412008-09-24

8.1.0Rel-8CT#402008-06-10

7.5.0Rel-7CT#402008-06-10

8.0.0Rel-8CT#392008-03-25

7.4.0Rel-7CT#392008-03-25

7.3.0Rel-7CT#382007-12-18

7.2.0Rel-7CT#372007-09-26

7.1.0Rel-7CT#362007-06-22

7.0.0Rel-7CT#352007-03-20

2.1.0Rel-7 · pre-approvalCT#352007-03-19

2.0.0Rel-7 · pre-approvalCT#352007-03-19

1.1.0Rel-7 · pre-approval-2007-03-04

1.0.0Rel-7 · pre-approvalCT#342006-12-04

0.5.0Rel-7 · pre-approval-2006-12-03

0.4.0Rel-7 · pre-approval-2006-11-16

0.3.0Rel-7 · pre-approval-2006-09-08

0.2.0Rel-7 · pre-approval-2006-07-11

0.1.0Rel-7 · pre-approval-2006-06-12

Atlas classifications

Meaning and provenance

No Atlas classifications have been attached yet.

Work Items

Standards work connected to TS 24.173

Rel-4 Terminal interfaces

Rel-4official

TLM5

Rel-5 Terminal interfaces

Rel-5official

MAINT_R1

Maintenance of TISPAN R1

Rel-7official

MITE

Study on Multimedia Telephony Capabilities for IMS

Rel-7official

MTSI

Stage 3 of MTSI

Rel-7official

MTSI

Multimedia Telephony Service for IMS

Rel-7official

ServID

Identification of Communication Services in IMS

Rel-7official

CCBS_CCNR

CT3 part of Stage 3 CCBS_CCNR

Rel-8official

CCBS_CCNR

Call Completion on Busy Subscriber (CCBS)/Call Completion on Non-Reachable (CCNR) on IMS

Rel-8official

CCBS_CCNR

CT1 part of Stage 3 CCBS_CCNR

Rel-8official

CW_IMS

CT3 part of Stage 3 CW-IMS

Rel-8official

CW_IMS

CT1 part of Stage 3 CW-IMS

Rel-8official

CW_IMS

Communication Wait on IMS

Rel-8official

Stage 3 FA

Rel-8official

MAINT_R2

Maintenance of TISPAN R2

Rel-8official

REDOC_3GPP2

Stage 3 CIMS_3GPP2 (CT1)

Rel-8official

REDOC_TIS-C1

Documentation of TISPAN R1 and R2 in CT1

Rel-8official

TEI8

(Small) Technical Enhancements and Improvements for Rel-8

Rel-8parsed

CRS

Stage 3 for IMS Customized Ringing Signal (CRS) Service

Rel-9official

SSAC

Service Specific Access Control in EPS

Rel-9official

SSAC

Stage 3 for Service Specific Access Control in EPS

Rel-9official

TEI9

(Small) Technical Enhancements and Improvements for Rel-9

Rel-9parsed

CCNL

CT1 part of Stage 3 for Completion of Communications on Not Logged-in

Rel-10official

RED

Deleted - Registration in Densely-populated area (RED)

Rel-10official

TEI10

(Small) Technical Enhancements and Improvements for Rel-10

Rel-10parsed

TEI11

(Small) Technical Enhancements and Improvements for Rel-11

Rel-11parsed

USSI

CT1 part of Stage 3 for USSD simulation service in IMS

Rel-11official

SCM_LTE-CT

CT aspects of Smart Congestion Mitigation in E-UTRAN (Stage 3)

Rel-12official

TEI12

(Small) Technical Enhancements and Improvements for Rel-12

Rel-12parsed

USSD_MS

Unstructured Supplementary Service Data (USSD) method selection (Stage 3)

Rel-12official

TEI13

(Small) Technical Enhancements and Improvements for Rel-13

Rel-13parsed

TEI14

(Small) Technical Enhancements and Improvements for Rel-14

Rel-14parsed

TEI16

(Small) Technical Enhancements and Improvements for Rel-16

Historical association · verification pending

Rel-16historical link

5GProtoc17

Stage-3 5GS NAS protocol development 17

Historical association · verification pending

Rel-17historical link

5GProtoc17-non3GPP

Stage-3 5GS NAS protocol development 17 non-IETF aspects

Rel-17parsed

TEI17

(Small) Technical Enhancements and Improvements for Rel-17

Rel-17parsed

eNPN

Enhanced support of Non-Public Networks

Historical association · verification pending

Rel-17historical link

5GProtoc18

Stage-3 5GS NAS protocol development 18

Rel-18parsed

MPSSupServ

MPS for Supplementary Services

Rel-18parsed

NG_RTC

System architecture for Next Generation Real time Communication services

Historical association · verification pending

Rel-18historical link

TEI18

(Small) Technical Enhancements and Improvements for Rel-18

Rel-18parsed

Knowledge graph

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