TS 29.228 – IMS Cx and Dx Interface Procedures
3GPP TS 29.228 is the 3GPP Technical Specification for IMS Cx and Dx Interface Procedures. Its official 3GPP title is “IP Multimedia (IM) Subsystem Cx and Dx interfaces”. It is published in 13 releases (Rel-8 to Rel-20); the latest version is 20.0.0 in Rel-20.
Defines Cx, Dx and related Px procedures between IMS CSCFs, HSS, SLF and presence functions, including Diameter signaling, registration, authentication and user data handling.
Releases and versions of TS 29.228
| Release | Latest version | Links |
|---|---|---|
| Rel-20 | 20.0.0 | Read · Download (3GPP) |
| Rel-19 | 19.2.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.0 | Read · Download (3GPP) |
| Rel-17 | 17.1.0 | Read · Download (3GPP) |
| Rel-16 | 16.1.0 | Read · Download (3GPP) |
| Rel-15 | 15.3.0 | Read · Download (3GPP) |
| Rel-14 | 14.6.0 | Read · Download (3GPP) |
| Rel-13 | 13.5.0 | Read · Download (3GPP) |
| Rel-12 | 12.10.0 | Read · Download (3GPP) |
| Rel-11 | 11.11.0 | Read · Download (3GPP) |
| Rel-10 | 10.8.0 | Read · Download (3GPP) |
| Rel-9 | 9.12.0 | Read · Download (3GPP) |
| Rel-8 | 8.19.0 | Read · Download (3GPP) |
Scope of TS 29.228
Category: Core Network (IMS). Technology generation: Multi-Gen. Network layer: CoreNetwork.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: High.
Key technologies
Specifications referenced by TS 29.228
- TS 23.141 Presence Service Stage 2 Architecture
- TS 23.003 Numbering, Addressing and Identification
- TS 23.008 Organization of Subscriber Data
- TS 23.380 IMS Restoration Procedures
- TS 23.228 IP Multimedia Core Network Subsystem
- TS 23.167 IMS Emergency Services
- TS 22.153 Multimedia Priority Service (MPS) requirements
- TS 24.228 IMS SIP Signaling Flows Examples
- TS 23.280 Common Functional Architecture for Mission Critical Services
- TS 24.323 IMS Service Level Tracing Management Object
- TS 33.203 IMS Security Features and Mechanisms
- TS 23.002 3GPP System Architecture Overview
Specifications that reference TS 29.228
- TS 24.229 IMS SIP/SDP Call Control Protocol
- TS 23.228 IP Multimedia Core Network Subsystem
- TS 32.422 Trace, MDT and UE Measurement Control
- TS 33.203 IMS Security Features and Mechanisms
- TS 29.272 MME and SGSN Diameter interfaces to HSS/CSS/EIR
- TS 29.229 Diameter Protocol for Cx/Dx Interfaces
- TS 23.380 IMS Restoration Procedures
- TS 24.147 IMS Conferencing Protocol Details
- TS 32.291 5G Charging Service-Based Interface
- TS 23.218 IMS Call Model Specification
- TS 29.328 IMS Sh, Dh and Ph Interface Procedures
- TS 29.336 Diameter-based Interfaces for MTC and Packet Data Networks
Other specifications in the 29 series
- TS 29.215 S9 Reference Point Stage 3 Specification
- TS 29.217 Policy and Charging Control (PCC) for Np Interface
- TS 29.219 Sy Reference Point Stage 3 Specification
- TS 29.222 CAPIF Northbound API Protocol
- TS 29.229 Diameter Protocol for Cx/Dx Interfaces
- TS 29.230 3GPP Diameter Protocol Codes Specification
- TS 29.231 Application of SIP-I Protocols to CS Core Network
- TS 29.232 Mc Interface Protocol Profile
Frequently asked questions
What is 3GPP TS 29.228?
3GPP TS 29.228 is the 3GPP Technical Specification for IMS Cx and Dx Interface Procedures. Defines Cx, Dx and related Px procedures between IMS CSCFs, HSS, SLF and presence functions, including Diameter signaling, registration, authentication and user data handling.
Which 3GPP releases include TS 29.228?
TS 29.228 is published in 13 releases, from Rel-8 to Rel-20. The latest version on 3GPP Explorer is 20.0.0 (Rel-20).
What category does TS 29.228 belong to?
TS 29.228 belongs to the Core Network (IMS) category of 3GPP specifications. It applies to Multi-Gen networks.
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