TS 29.235 – SIP-I CS Core Network Interworking
3GPP TS 29.235 is the 3GPP Technical Specification for SIP-I CS Core Network Interworking. It is published in 12 releases (Rel-8 to Rel-19); the latest version is 19.0.0 in Rel-19.
Specifies interworking procedures between a SIP-I based CS core network and external SIP-I, ISUP, BICC networks, and IMS.
Releases and versions of TS 29.235
| 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 | 15.1.0 | Read · Download (3GPP) |
| Rel-14 | 14.1.0 | Read · Download (3GPP) |
| Rel-13 | 13.2.0 | Read · Download (3GPP) |
| Rel-12 | 12.2.0 | Read · Download (3GPP) |
| Rel-11 | 11.4.0 | Read · Download (3GPP) |
| Rel-10 | 10.4.0 | Read · Download (3GPP) |
| Rel-9 | 9.11.0 | Read · Download (3GPP) |
| Rel-8 | 8.9.0 | Read · Download (3GPP) |
Scope of TS 29.235
Category: Core Network (Interworking). Technology generation: Multi-Gen. Network layer: CoreNetwork.
Who should read this specification?
- Network operators
- Device manufacturers
Implementation notes
Complexity level: Advanced. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TS 29.235
- TS 29.205 BICC Protocols for Bearer-Independent CS Core Network
- TS 23.228 IP Multimedia Core Network Subsystem
- TS 24.229 IMS SIP/SDP Call Control Protocol
- TS 29.163 Interworking between 3GPP IM CN and CS networks
- TR 21.905 3GPP Terminology and Definitions
- TS 23.014 DTMF Support in 3GPP Systems
- TS 24.629 Explicit Communication Transfer (ECT) Protocol
- TS 24.610 Communication Hold (HOLD) Service Protocol
- TS 29.238 H.248 Profile for IBCF-TrGW Interface
- TS 23.002 3GPP System Architecture Overview
- TS 29.162 IMS-IP Network Interworking
- TS 23.231 SIP-I based CS core network stage 2
Specifications that reference TS 29.235
- TS 23.205 Bearer Independent CS Core Network Stage 2
- TS 23.231 SIP-I based CS core network stage 2
- TS 29.162 IMS-IP Network Interworking
- TS 29.231 Application of SIP-I Protocols to CS Core Network
- TS 29.332 MGCF-IM-MGW Interface Protocol (Mn)
- TS 29.238 H.248 Profile for IBCF-TrGW Interface
- TS 29.164 CS-LTE Interworking with SIP-I, BICC, ISUP
Other specifications in the 29 series
- 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
- TS 29.234 WLAN-3GPP Interworking Stage-3 Protocol
- TS 29.238 H.248 Profile for IBCF-TrGW Interface
- TS 29.240 3GPP Generic User Profile (GUP) Stage 3 Protocol
- TS 29.244 PFCP for Control and User Plane Separation
- TS 29.250 Nu Reference Point Stage 3 Specification
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TS 29.235?
3GPP TS 29.235 is the 3GPP Technical Specification for SIP-I CS Core Network Interworking. Specifies interworking procedures between a SIP-I based CS core network and external SIP-I, ISUP, BICC networks, and IMS.
Which 3GPP releases include TS 29.235?
TS 29.235 is published in 12 releases, from Rel-8 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TS 29.235 belong to?
TS 29.235 belongs to the Core Network (Interworking) category of 3GPP specifications. It applies to Multi-Gen networks.
View the full specification with interactive table of contents, version history, and AI analysis.
Read Full Specification →