TR 29.949 – VoLTE IMS Roaming Architecture & Procedures
3GPP TR 29.949 is the 3GPP Technical Report for VoLTE IMS Roaming Architecture & Procedures. It is published in 8 releases (Rel-12 to Rel-19); the latest version is 19.0.0 in Rel-19.
Describes end-to-end use cases and signaling flows for VoLTE IMS roaming with local breakout, covering registration, routing, and access transfer scenarios.
Releases and versions of TR 29.949
| 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 | 13.3.0 | Read · Download (3GPP) |
| Rel-12 | 12.2.0 | Read · Download (3GPP) |
Scope of TR 29.949
Category: Services (IMS). Technology generation: 4G. Network layer: Services.
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 TR 29.949
- TS 23.218 IMS Call Model Specification
- TS 29.228 IMS Cx and Dx Interface Procedures
- TS 23.003 Numbering, Addressing and Identification
- TR 21.905 3GPP Terminology and Definitions
- TS 24.237 IMS Service Continuity Protocol Details
- TS 24.628 Common Basic Communication Procedures in IMS
- TS 32.260 IMS Charging Management
- TS 23.002 3GPP System Architecture Overview
- TS 29.212 Diameter-Based PCC Reference Points
- TS 29.214 Rx Interface for Policy and Charging Control
- TS 23.228 IP Multimedia Core Network Subsystem
- TS 24.229 IMS SIP/SDP Call Control Protocol
Specifications that reference TR 29.949
- TS 29.165 Inter-IMS Network-to-Network Interface (II-NNI)
Other specifications in the 29 series
- TR 29.893 Technical Report on QUIC for 5GC SBI
- TR 29.909 Diameter Usage Guidelines for 3GPP
- TR 29.935 HSS Reference Data Model for Ud Interface
- TR 29.941 Port Number Allocation Guidelines for 3GPP Interfaces
- TR 29.994 GSM/GERAN UE Interworking Recommendations
- TR 29.998-01 OSA API Mapping Overview
- TR 29.998-04-1 OSA Call Control to CAP/MAP Mapping
- TR 29.998-04-4 OSA API Mapping for Multiparty Call Control to ISC
Related glossary terms
Related topics
Related technologies
Frequently asked questions
What is 3GPP TR 29.949?
3GPP TR 29.949 is the 3GPP Technical Report for VoLTE IMS Roaming Architecture & Procedures. Describes end-to-end use cases and signaling flows for VoLTE IMS roaming with local breakout, covering registration, routing, and access transfer scenarios.
Which 3GPP releases include TR 29.949?
TR 29.949 is published in 8 releases, from Rel-12 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TR 29.949 belong to?
TR 29.949 belongs to the Services (IMS) category of 3GPP specifications. It applies to 4G networks.
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