Canonical Atlas record

TS 23.228

IP Multimedia Subsystem (IMS); Stage 2

Responsible WGS2
StatusUnder change control
Initial releaseRel-5
Selected releaseRel-8
Latest indexed version20.1.0
Series23
TypeTS
Visual answer

TS 23.228 relationship map

IMS architecture

Rel-8mixed provenance
TS 23.228IMS architecture
No mapped relationship in this release.The document may exist, but Atlas has no release-valid relationship evidence for the selected snapshot yet.

Release-aware filtering uses explicit relationship validity where mapped and official initial-release metadata where available. Unknown relationship validity remains visible and labelled rather than guessed.

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

1 common IMSno version indexed1 WI0 CRs
Rel-4no version indexed1 WI0 CRs
Rel-55.15.024 WI372 CRs · 157 approved
Rel-66.16.010 WI475 CRs · 141 approved
Rel-77.16.024 WI431 CRs · 123 approved
Rel-88.12.029 WI293 CRs · 88 approved
Rel-99.4.03 WI75 CRs · 22 approved
Rel-1010.9.010 WI96 CRs · 33 approved
Rel-1111.11.07 WI109 CRs · 39 approved
Rel-1212.11.08 WI135 CRs · 39 approved
Rel-1313.9.07 WI95 CRs · 28 approved
Rel-1414.7.03 WI70 CRs · 20 approved
Rel-1515.5.01 WI40 CRs · 14 approved
Rel-1616.7.04 WI96 CRs · 26 approved
Rel-1717.3.04 WI25 CRs · 10 approved
Rel-1818.12.04 WI336 CRs · 67 approved
Rel-1919.8.07 WI804 CRs · 118 approved
Rel-2020.1.03 WI267 CRs · 33 approved
R99no version indexed3 WI0 CRs

Rel-8 snapshot

Work affecting this release

293 indexed Change Requests · 29 connected Work Items.

Showing 0 CR records from the available cross-release sample. Browse release CR records (JSON) →

Version history

Indexed versions

Showing 60 of 171 indexed versions.

20.1.0Rel-20SA#1132026-09-24
19.8.0Rel-19SA#1132026-09-24
20.0.0Rel-20SA#1122026-06-22
19.7.0Rel-19SA#1122026-06-22
18.12.0Rel-18SA#1122026-06-22
19.6.0Rel-19SA#1112026-03-16
19.5.0Rel-19SA#1102025-12-19
18.11.0Rel-18SA#1102025-12-19
19.4.0Rel-19SA#1092025-09-24
19.3.0Rel-19SA#1082025-06-19
18.10.0Rel-18SA#1082025-06-19
19.2.0Rel-19SA#1072025-03-25
18.9.0Rel-18SA#1072025-03-25
19.1.0Rel-19SA#1062024-12-20
18.8.0Rel-18SA#1062024-12-20
19.0.0Rel-19SA#1052024-09-24
18.7.0Rel-18SA#1052024-09-24
18.6.0Rel-18SA#1042024-06-26
18.5.0Rel-18SA#1032024-03-27
18.4.0Rel-18SA#1022023-12-19
18.3.0Rel-18SA#1012023-09-19
18.2.0Rel-18SA#1002023-06-23
18.1.0Rel-18SA#992023-03-31
18.0.0Rel-18SA#98-e2022-12-21
17.3.0Rel-17SA#94-e2021-12-23
16.7.0Rel-16SA#94-e2021-12-23
15.5.0Rel-15SA#94-e2021-12-23
14.7.0Rel-14SA#94-e2021-12-23
13.9.0Rel-13SA#94-e2021-12-23
12.11.0Rel-12SA#94-e2021-12-23
17.2.0Rel-17SA#93-e2021-09-24
17.1.0Rel-17SA#92-e2021-06-24
17.0.0Rel-17SA#91-e2021-03-30
16.6.0Rel-16SA#90-e2020-12-17
16.5.0Rel-16SA#89-e2020-09-24
16.4.0Rel-16SA#87-E2020-03-27
16.3.0Rel-16SA#862019-12-22
16.2.0Rel-16SA#852019-09-24
16.1.0Rel-16SA#842019-06-11
16.0.0Rel-16SA#832019-03-25
15.4.0Rel-15SA#832019-03-25
15.3.0Rel-15SA#812018-09-17
15.2.0Rel-15SA#792018-03-27
15.1.0Rel-15SA#782017-12-22
14.6.0Rel-14SA#782017-12-22
15.0.0Rel-15SA#772017-09-18
14.5.0Rel-14SA#772017-09-18
14.4.0Rel-14SA#762017-06-12
14.3.0Rel-14SA#752017-03-13
14.2.0Rel-14SA#742016-12-16
13.8.0Rel-13SA#742016-12-16
14.1.0Rel-14SA#732016-09-26
13.7.0Rel-13SA#732016-09-26
14.0.0Rel-14SA#722016-06-22
13.6.0Rel-13SA#722016-06-22
13.5.0Rel-13SA#712016-03-15
12.10.0Rel-12SA#712016-03-15
13.4.0Rel-13SA#692015-09-22
13.3.0Rel-13SA#682015-06-24
12.9.0Rel-12SA#682015-06-21

Atlas classifications

Meaning and provenance

No Atlas classifications have been attached yet.

Work Items

Standards work connected to TS 23.228

IMS_Comm_Mtce7

SA1,SA2 part of Maintenance of TISPAN release 1 common IMS

1 common IMSofficial
EMC1-CS

Rel-4 Emergency call enhancements

Rel-4official
WI 11004

IETF: RFC 3267 (AMR and AMR WB RTP and SDP)

Rel-5official
WI 11000

IETF: RFC 3265 (specific event notification)

Rel-5official
WI 2525

IETF: RFC 3313 (SIP extensions for media authorization)

Rel-5official
WI 2524

IETF: RFC 3323 (SIP extensions for caller identity and privacy)

Rel-5official
WI 2522

IETF: RFC 3312 (Without COMET)(Integration of resource management and SIP)

Rel-5official
WI 2523

IETF: RFC 3262 (Reliability of provisional responses)

Rel-5official
WI 2521

IETF: RFC 3261 (Session Initiation Protocol)

Rel-5official
WI 10004

Main IETF dependencies

Rel-5official
WI 1292

Impact on HSS

Rel-5official
WI 1291

Architectural issues

Rel-5official
WI 1290

Addressing

Rel-5official
WI 11024

IETF: RFC editor Queue (Various 3GPP Private Extensions)

Rel-5official
WI 11023

IETF: RFC 3324 (Network Asserted Identity)

Rel-5official
WI 11022

IETF: RFC 3311 (The Update method)

Rel-5official
WI 11005

IETF: RFC 3266 (IPv6 support within SDP)

Rel-5official
WI 11002

IETF: RFC editor Queue (DHCP options for SIP servers)

Rel-5official
WI 11001

IETF: RFC editor Queue (refer method)

Rel-5official
E2EQoS

End to End QoS for PS Domain including IMS

Rel-5official
Effective Acronym:

Stage 2 (Architecture and Main flows)

Rel-5official
IMS

Provisioning of IP-based multimedia services

Rel-5official
IMS-ASEC

Access Security for IMS

Rel-5official
IMS-CCR

Call control and roaming to support IMS in UMTS

Rel-5official
TEI5

(Small) Technical Enhancements and Improvements for Rel-5

Rel-5parsed
TLM5

Rel-5 Terminal interfaces

Rel-5official
Effective Acronym:

Stage 2 for IMS Messaging

Rel-6official
Effective Acronym:

Stage 2 for IMS Group Management

Rel-6official
Effective Acronym:

Stage 2 for add SIP cap (e.g. forking)

Rel-6official
Effective Acronym:

Stage 2 for IMS Conferencing

Rel-6official
GUP

Generic User Profile Rel-6

Rel-6official
IMS2

IMS Phase 2

Rel-6official
IMSCOOP

Interoperability and Commonality between IMS using different IP-connectivity Networks

Rel-6official
PoC

3GPP Enablers for services like Push to Talk over Cellular (PoC)

Rel-6official
QoS1

QoS Improvements

Rel-6official
TEI6

(Small) Technical Enhancements and Improvements for Rel-6

Rel-6parsed
CSIterm

Deleted - Study on Terminating Session handling

Rel-7official
CSItermS

CSI Terminating Session handling

Rel-7official
EMC1

PS domain and IMS impacts for supporting IMS Emergency calls (EMC1)

Rel-7official
EMC1

Emergency Call Enhancements for IP& PS Based Calls stage 3

Rel-7official
EMC1

Stage 2 Specification Phase - IMS-level

Rel-7official
EMC1

Study on Stage 2 for IMS-level solution

Rel-7official
Effective Acronym:

Stage 1,2 of FBI for PacketCable

Rel-7official
Effective Acronym:

Stage 2 of CStermS

Rel-7official
Effective Acronym:

Evolution of policy control and flow based bearer level charging

Rel-7official
FBI

System enhancements for Fixed Broadband access to IMS

Rel-7official
FBI-PCBL

PacketCable Related aspects

Rel-7official
GRUU

Supporting Globally Routable User Agent URIs in IMS

Rel-7official
GRUU

Stage 1,2 of GRUU

Rel-7official
IMS-EMER

Deleted - PS domain and IMS support for IMS Emergency sessions

Rel-7official
IMS-RT

Deleted - Study on IMS enhancements and optimizations for real time communication.

Rel-7official
IMSLocal

Deleted - IMS Local services

Rel-7official
Mp

Mp (MRFC - MRFP) interface

Rel-7official
PCC

Evolution of Policy Control and Charging

Rel-7official
PNPAN

Deleted - Covered by SI - Personal Network (PN) and Personal Area Network (PAN)

Rel-7official
SMSIP

Support of SMS over generic 3GPP IP access

Rel-7official
ServID

Stage 1,2 of ServID

Rel-7official
ServID

Identification of Communication Services in IMS

Rel-7official
TEI7

(Small) Technical Enhancements and Improvements for Rel-7

Rel-7parsed
VCC

Voice Call Continuity between CS and IMS (incl. I-WLAN)

Rel-7official
CIMS_3GPP2

Stage 2 CIMS_3GPP2

Rel-8official
CIMS_3GPP2

3GPP2 Input to Common IMS

Rel-8official
FBI2

Deleted - never approved- FBI Phase 2

Rel-8official
FS_SAE

Study on 3GPP System Architecture Evolution

Rel-8official
ICSRA

IMS Centralized Service control

Rel-8official
ICSRA-St2

Stage 2 for ICS Requirement and Architecture

Rel-8official
IMS-Cont

IMS Service Continuity

Rel-8official
IMS_Comm_Doc

Documentation of TISPAN NGN R1 and R2 in 3GPP SA2

Rel-8official
IMS_Corp

SA2 aspects of IMS_Corp

Rel-8official
IMS_Corp

IMS System enhancements for corporate network access

Rel-8official
IMS_NNI

Stage 2 for IMS_NNI

Rel-8official
IMS_NNI

System enhancements for interconnection interfaces between two IMSs

Rel-8official
PktCbl-Deploy

Architecture aspects of PktCbl-Deploy

Rel-8official
PktCbl-Intw

Architecture aspects of PktCbl-Interwork

Rel-8official
PktCbl-Intw

IMS Inter-working aspects in Support of Cable Regulatory requirements

Rel-8official
SAES

Deleted - Issues for CT4 TR 29.803

Rel-8official
SAES

Issues for CT1 TR 24.801

Rel-8official
SAES

CT6 aspects of SAE

Rel-8official
SAES

3GPP System Architecture Evolution Specification - Evolved Packet System (non RAN aspects)

Rel-8official
SAES

Issues for CT3 TR 29.804

Rel-8official
SAES-CSFB

CS Fallback in EPS

Rel-8official
SAES-IMS_LBO

System enhancements for the use of IMS services in local breakout

Rel-8official
SAES-SA

Deleted - SA aspects of System Architecture Evolution

Rel-8official
SAES-SA-FP_3GPP

Stage 2 GPRS for EPC (23.060, etc.)

Rel-8official
SAES-SA-FP_n3GPP

Stage 3 security aspects for MIPv4 Access

Rel-8official
SAES-SA_IMS

SAE impacts on IMS

Rel-8official
SAES-St2

Deleted - Stage 2 of architecture for the 3GPP System Architecture Evolution

Rel-8official
TEI8

(Small) Technical Enhancements and Improvements for Rel-8

Rel-8parsed
eMp

Conferencing enhancements for Mp interface

Rel-8official
IMS_EMER_GPRS_EPS

Stage 2 for IMS Emergency Calls over GPRS and EPS

Rel-9official
IMS_EMER_GPRS_EPS

Support for IMS Emergency Calls over GPRS and EPS

Rel-9official
TEI9

(Small) Technical Enhancements and Improvements for Rel-9

Rel-9parsed
ECSRA_LAA

Stage 2 for Enabling Coder Selection and Rate Adaptation for UTRAN and E-UTRAN for Load Adaptive Applications

Rel-10official
FS_IMS_LBO_ORM

Study on System enhancements for the use of IMS services in Local BreakOut and Optimal Routing of Media

Rel-10official
IMSProtoc4

IMS Stage 3 IETF Protocol Alignment - phase 4

Rel-10parsed
OMR

Stage 2 for Optimal Media Routing

Rel-10official
OMR

Optimal Media Routing

Rel-10official
TEI10

(Small) Technical Enhancements and Improvements for Rel-10

Rel-10parsed
eMPS

Enhancements for Multimedia Priority Service

Rel-10official
ePRIOR-St2

Stage 2 on eMPS for IMS Aspects

Rel-10official
ePRIOR-St2

Stage 2 on eMPS for EPS Bearer Service

Rel-10official
ePRIOR-St2

Stage 2 on eMPS for CSFB

Rel-10official
FS_eIMS

Study on IMS Evolution

Rel-11parsed
IOC

Stage 2 for IMS Overload Control

Rel-11official
IPXS

Stage 2 for Advanced IP Interconnection of Services

Rel-11official
IPXS

Advanced IP Interconnection of Services

Rel-11official
NWK-PL2IMS

Stage 2 for Network-provided Location information for IMS

Rel-11official
RAVEL

Stage 2 for Roaming Architecture for Voice over IMS with Local Breakout

Rel-11official
TEI11

(Small) Technical Enhancements and Improvements for Rel-11

Rel-11parsed
BusTI

IMS Business Trunking for IP-PBX in Static Mode of Operation

Rel-12parsed
BusTI-SA2

Stage 2 for IMS Business Trunking for IP-PBX in Static Mode of Operation

Rel-12official
IMS_RegCon

Deleted - IMS Registration Control

Rel-12parsed
IMS_RegCon-del2

Deleted - Stage 2 for IMS Registration Control

Rel-12official
IMS_WebRTC

Stage 2 for Web Real Time Communication access to IMS

Rel-12official
NETLOC_TWAN

Network-provided Location information for IMS Trusted WLAN Access Network (TWAN) case

Rel-12parsed
NETLOC_TWAN-SA2

Stage 2 for Network-provided Location information for IMS Trusted WLAN Access Network (TWAN) case

Rel-12official
TEI12

(Small) Technical Enhancements and Improvements for Rel-12

Rel-12parsed
DRuMS

Double Resource Reuse for Multiple Media Sessions

Rel-13parsed
DRuMS-SA2

Stage 2 for Double Resource Reuse for Multiple Media Sessions

Rel-13official
TEI13

(Small) Technical Enhancements and Improvements for Rel-13

Rel-13parsed
eProSe-Ext-SA2

Stage 2 for Enhancements to Proximity-based Services - Extensions

Rel-13parsed
eWebRTCi

Stage 2 for Enhancements to WEBRTC interoperability

Rel-13official
voE_UTRAN_PPD

voice over E-UTRAN Paging Policy Differentiation

Rel-13parsed
voE_UTRAN_PPD-SA2

Stage 2 for voice over E-UTRAN Paging Policy Differentiation

Rel-13official
FS_PS_DATA_OFF

Study on Stage 2 of PS Data off function

Rel-14parsed
TEI14

(Small) Technical Enhancements and Improvements for Rel-14

Rel-14parsed
V8

S8 Home Routing Architecture for VoLTE

Rel-14parsed
5GS_Ph1

5G System - Phase 1

Rel-15parsed
FS_eIMS5G

Study on Enhanced IMS to 5GC Integration

Rel-16parsed
LI16

Lawful Interception Rel-16

Rel-16parsed
TEI16

(Small) Technical Enhancements and Improvements for Rel-16

Historical association · verification pending
Rel-16historical link
eNA

Enablers for Network Automation for 5G

Historical association · verification pending
Rel-16historical link
MPS2

Multimedia Priority Service (MPS) Phase 2

Rel-17parsed
MUSIM

Support for Multi-USIM Devices

Historical association · verification pending
Rel-17historical link
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
NG_RTC

System architecture for Next Generation Real time Communication services

Rel-18parsed
NG_RTC_SEC

Security support for Next Generation Real Time Communication services

Rel-18parsed
TEI18

(Small) Technical Enhancements and Improvements for Rel-18

Rel-18parsed
eNA_Ph3

(stage 2 of eNA_Ph3) Enablers for Network Automation for 5G phase 3

Rel-18parsed
5GSAT_Ph3-ARC

Integration of satellite components in the 5G architecture Phase 3

Rel-19parsed
5GSAT_Ph3_ARCH

CT aspects of integration of satellite components in the 5G architecture Phase 3

Rel-19parsed
AvCall-MED

Avatar Communications in AR Calls

Rel-19parsed
MPS4msg

MPS for Messaging services

Rel-19parsed
NG_RTC_Ph2

Stage 2 of System architecture for Next Generation Real time Communication services Phase 2

Rel-19parsed
NG_RTC_Ph2

System architecture for Next Generation Real time Communication services Phase 2

Rel-19parsed
TEI19

(Small) Technical Enhancements and Improvements for Rel-19

Rel-19parsed
5GSAT_Ph4-ARC

Stage 2 of Integration of satellite components in the 5G architecture Phase 4

Rel-20parsed
FS_Avatar_Ph2_MED

Study on Avatar communication Phase 2

Rel-20parsed
NG_RTC_Ph3-ARC

System architecture for next generation real time communication services - Phase 3

Rel-20parsed
E2EQoS99

End-to-end QoS for PS Domain including IMS

R99parsed
QoS

End-to-end UMTS Quality of Service management

R99official
TEI

(Small) Technical Enhancements and Improvements for R99

R99parsed

Knowledge graph

Related standards

No graph edges indexed yet. The graph API is available at this JSON endpoint.