TS 28.062 – Tandem Free Operation (TFO) Service Description
3GPP TS 28.062 is the 3GPP Technical Specification for Tandem Free Operation (TFO) Service Description. It is published in 12 releases (Rel-8 to Rel-19); the latest version is 19.0.0 in Rel-19.
Defines in-band signaling protocol for TFO to avoid double speech transcoding in GSM/3G calls, improving quality and saving bandwidth.
Releases and versions of TS 28.062
| 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) |
Scope of TS 28.062
Category: Services (Voice Services). Technology generation: Multi-Gen. Network layer: Services.
Who should read this specification?
- Network operators
- Device manufacturers
Implementation notes
Complexity level: Advanced. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TS 28.062
- TS 48.008 BSS-MSC Interface Layer 3 Procedures
- TS 48.054 BSC-BTS Physical Layer Interface
- TS 48.058 BSC-BTS interface layer 3 specification
- TS 44.018 GSM Radio Resource Management Procedures
- TS 23.153 Out-of-Band Transcoder Control Stage 2
- TS 29.232 Mc Interface Protocol Profile
- TS 25.415 Iu Interface User Plane Protocol
- TS 26.171 Introduction to AMR-WB Speech Processing
- TS 26.190 AMR-WB Speech Codec Detailed Mapping
- TS 22.053 Tandem Free Operation (TFO) Stage 1
- TS 23.053 Tandem Free Operation (TFO) Stage 2
- TS 48.060 Inband Control of Remote Transcoder/Rate Adaptors
Specifications that reference TS 28.062
- TS 26.114 IMS Multimedia Telephony Client
- TS 44.018 GSM Radio Resource Management Procedures
- TS 23.153 Out-of-Band Transcoder Control Stage 2
- TS 29.163 Interworking between 3GPP IM CN and CS networks
- TS 29.232 Mc Interface Protocol Profile
- TS 43.068 Voice Group Call Service (VGCS) Stage 2
- TS 48.060 Inband Control of Remote Transcoder/Rate Adaptors
- TS 26.102 Mapping of AMR and other codecs to interfaces
- TS 43.069 Voice Broadcast Service (VBS) Stage 2
- TS 26.202 AMR-WB Speech Codec Mapping Specification
- TR 23.977 Bandwidth/Resource Savings & Speech Quality Requirements
- TR 43.903 Feasibility Study for A-interface over IP
Other specifications in the 28 series
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TS 28.062?
3GPP TS 28.062 is the 3GPP Technical Specification for Tandem Free Operation (TFO) Service Description. Defines in-band signaling protocol for TFO to avoid double speech transcoding in GSM/3G calls, improving quality and saving bandwidth.
Which 3GPP releases include TS 28.062?
TS 28.062 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 28.062 belong to?
TS 28.062 belongs to the Services (Voice Services) category of 3GPP specifications. It applies to Multi-Gen networks.
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