TS 23.279 – Combined CS and IMS Services (CSI) Architecture
3GPP TS 23.279 is the 3GPP Technical Specification for Combined CS and IMS Services (CSI) Architecture. Its official 3GPP title is “Combining Circuit Switched (CS) and IP Multimedia Subsystem (IMS) services”. It is published in 13 releases (Rel-7 to Rel-19); the latest version is 19.0.0 in Rel-19.
Architectural details for combining Circuit Switched (CS) services and IMS sessions in parallel between same users, including capability exchange and session establishment procedures.
Releases and versions of TS 23.279
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.0.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.0 | Read · Download (3GPP) |
| Rel-17 | 17.0.0 | Read · Download (3GPP) |
| Rel-16 | 16.0.0 | Read · Download (3GPP) |
| Rel-15 | 15.0.0 | Read · Download (3GPP) |
| Rel-14 | 14.0.0 | Read · Download (3GPP) |
| Rel-13 | 13.0.0 | Read · Download (3GPP) |
| Rel-12 | 12.0.0 | Read · Download (3GPP) |
| Rel-11 | 11.0.0 | Read · Download (3GPP) |
| Rel-10 | 10.0.0 | Read · Download (3GPP) |
| Rel-9 | 9.0.0 | Read · Download (3GPP) |
| Rel-8 | 8.1.0 | Read · Download (3GPP) |
| Rel-7 | 7.7.0 | Read · Download (3GPP) |
Scope of TS 23.279
Category: Services (IMS). Technology generation: 3G. Network layer: Services.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TS 23.279
- TS 23.060 GPRS Stage 2 Service Description
- TS 23.088 Call Barring (CB) Supplementary Services Stage 2
- TS 23.091 Explicit Call Transfer (ECT) Stage 2
- TS 22.279 CS and IMS Combinational Services Requirements
- TS 22.115 3GPP Charging and Billing Service Aspects
- TS 23.087 User-to-User Signalling (UUS) Stage 2
- TS 23.078 CAMEL Phase 4 Stage 2 Specification
- TS 23.206 Voice Call Continuity (VCC) Functional Architecture
- TR 21.905 3GPP Terminology and Definitions
- TS 22.087 User-to-User Signalling (UUS) Supplementary Service
- TS 23.228 IP Multimedia Core Network Subsystem
- TS 23.081 Call Identification Supplementary Services Stage 2
Specifications that reference TS 23.279
Other specifications in the 23 series
- TS 23.271 LCS Stage 2 Specification
- TS 23.272 CS Fallback in EPS Stage 2
- TS 23.273 5G Location Services Architecture Stage 2
- TS 23.278 CAMEL for IMS Stage 2 Specification
- TS 23.280 Common Functional Architecture for Mission Critical Services
- TS 23.281 Mission Critical Video Service
- TS 23.282 Mission Critical Data Functional Architecture
- TS 23.283 Mission Critical Communication Interworking
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TS 23.279?
3GPP TS 23.279 is the 3GPP Technical Specification for Combined CS and IMS Services (CSI) Architecture. Architectural details for combining Circuit Switched (CS) services and IMS sessions in parallel between same users, including capability exchange and session establishment procedures.
Which 3GPP releases include TS 23.279?
TS 23.279 is published in 13 releases, from Rel-7 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TS 23.279 belong to?
TS 23.279 belongs to the Services (IMS) category of 3GPP specifications. It applies to 3G networks.
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