TS 46.021 – GSM Half Rate DTX Frame Substitution & Muting
3GPP TS 46.021 is the 3GPP Technical Specification for GSM Half Rate DTX Frame Substitution & Muting. It is published in 12 releases (Rel-8 to Rel-19); the latest version is 19.0.0 in Rel-19.
Defines frame substitution and muting procedures for handling lost/unreliable speech/SID frames in GSM half rate channels to conceal errors and mute output gracefully.
Releases and versions of TS 46.021
| 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 | 8.0.0 | Read · Download (3GPP) |
Scope of TS 46.021
Category: Radio Access (Speech Processing). Technology generation: 2G. Network layer: RAN.
Who should read this specification?
- Network operators
- Device manufacturers
Implementation notes
Complexity level: Intermediate. Implementation difficulty: Medium.
Key technologies
Specifications that reference TS 46.021
Other specifications in the 46 series
- TS 46.010 GSM Full Rate Speech Transcoding (RPE-LTP)
- TS 46.011 GSM DTX Frame Substitution and Muting
- TS 46.012 GSM DTX Comfort Noise Specification
- TS 46.020 GSM Half Rate Speech Codec Specification
- TS 46.022 GSM Half Rate DTX Comfort Noise Specification
- TS 46.031 GSM Full Rate Speech DTX Operation
- TS 46.032 GSM Voice Activity Detector (VAD) Specification
- TS 46.041 GSM Half Rate Speech DTX Operation
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TS 46.021?
3GPP TS 46.021 is the 3GPP Technical Specification for GSM Half Rate DTX Frame Substitution & Muting. Defines frame substitution and muting procedures for handling lost/unreliable speech/SID frames in GSM half rate channels to conceal errors and mute output gracefully.
Which 3GPP releases include TS 46.021?
TS 46.021 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 46.021 belong to?
TS 46.021 belongs to the Radio Access (Speech Processing) category of 3GPP specifications. It applies to 2G networks.
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