TS 23.153 – Out-of-Band Transcoder Control Stage 2
3GPP TS 23.153 is the 3GPP Technical Specification for Out-of-Band Transcoder Control Stage 2. Its official 3GPP title is “Out of band transcoder control; Stage 2”. It is published in 17 releases (R99 to Rel-19); the latest version is 19.0.0 in Rel-19.
Specifies procedures for Transcoder Free Operation (TrFO) and Tandem Free Operation (TFO) to avoid speech quality degradation from multiple transcodings in circuit-switched networks.
Releases and versions of TS 23.153
| 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 | 13.2.0 | Read · Download (3GPP) |
| Rel-12 | 12.0.0 | Read · Download (3GPP) |
| Rel-11 | 11.1.0 | Read · Download (3GPP) |
| Rel-10 | 10.1.0 | Read · Download (3GPP) |
| Rel-9 | 9.3.0 | Read · Download (3GPP) |
| Rel-8 | 8.3.0 | Read · Download (3GPP) |
| Rel-7 | 7.2.0 | Read · Download (3GPP) |
| Rel-6 | 6.3.0 | Read · Download (3GPP) |
| Rel-5 | 5.12.0 | Read · Download (3GPP) |
| Rel-4 | 4.14.0 | Read · Download (3GPP) |
| R99 | 1100 | Read · Download (3GPP) |
Scope of TS 23.153
Category: Services (Voice Services). 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 23.153
- TS 28.062 Tandem Free Operation (TFO) Service Description
- TS 23.009 Handover Procedures in PLMNs
- TS 29.232 Mc Interface Protocol Profile
- TS 29.415 Nb User Plane Protocol Specification
- TS 48.008 BSS-MSC Interface Layer 3 Procedures
- TS 43.051 GERAN Stage 2 Service Description
- TS 23.172 Service Change and UDI Fallback (SCUDIF)
- TS 34.108 Common Test Environments for UE Conformance Testing
- TS 29.007 PLMN-PSTN/ISDN Interworking Requirements
- TS 23.107 UMTS QoS Framework
- TS 23.231 SIP-I based CS core network stage 2
- TS 29.231 Application of SIP-I Protocols to CS Core Network
Specifications that reference TS 23.153
- TS 26.114 IMS Multimedia Telephony Client
- TS 23.221 3GPP System Architectural Requirements
- TS 23.236 Intra Domain Connection of RAN Nodes to Multiple CN Nodes
- TS 25.415 Iu Interface User Plane Protocol
- TS 29.007 PLMN-PSTN/ISDN Interworking Requirements
- TS 23.205 Bearer Independent CS Core Network Stage 2
- TS 23.009 Handover Procedures in PLMNs
- TS 23.172 Service Change and UDI Fallback (SCUDIF)
- TS 29.232 Mc Interface Protocol Profile
- TS 25.410 Iu Interface Introduction for UTRAN
- TS 43.051 GERAN Stage 2 Service Description
- TS 23.231 SIP-I based CS core network stage 2
Other specifications in the 23 series
- TS 23.140 Non-realtime Multimedia Messaging Service
- TS 23.141 Presence Service Stage 2 Architecture
- TS 23.142 VAS for SMS Stage 2 Specification
- TS 23.146 3G Facsimile Group 3 Technical Realization
- TS 23.161 Network-based IP Flow Mobility (NBIFOM)
- TS 23.167 IMS Emergency Services
- TS 23.171 Location Services Stage 2 Specification
- TS 23.172 Service Change and UDI Fallback (SCUDIF)
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TS 23.153?
3GPP TS 23.153 is the 3GPP Technical Specification for Out-of-Band Transcoder Control Stage 2. Specifies procedures for Transcoder Free Operation (TrFO) and Tandem Free Operation (TFO) to avoid speech quality degradation from multiple transcodings in circuit-switched networks.
Which 3GPP releases include TS 23.153?
TS 23.153 is published in 17 releases, from R99 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TS 23.153 belong to?
TS 23.153 belongs to the Services (Voice Services) category of 3GPP specifications. It applies to Multi-Gen networks.
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