TS 06.91 – AMR Speech Frame Substitution and Muting
3GPP TS 06.91 is the 3GPP Technical Specification for AMR Speech Frame Substitution and Muting. It is part of 3GPP R98 (version 7.1.1).
Defines frame substitution and muting procedures for handling lost speech or SID frames in AMR channels, improving speech quality during transmission errors.
Releases and versions of TS 06.91
| Release | Latest version | Links |
|---|---|---|
| R98 | 7.1.1 | Read · Download (3GPP) |
Scope of TS 06.91
Category: Services (Voice Services). Technology generation: 2G. Network layer: UE.
Who should read this specification?
- Network operators
- Device manufacturers
- Regulators and standards bodies
Implementation notes
Complexity level: Intermediate. Implementation difficulty: Medium.
Key technologies
Other specifications in the 06 series
- TS 06.81 Enhanced Full Rate DTX Operation
- TS 06.82 Voice Activity Detector for DTX in EFR
- TS 06.85 GSM Speech Codec Performance Evaluation
- TS 06.90 AMR Speech Codec Mapping Specification
- TS 06.92 DTX Comfort Noise for AMR Speech
- TS 06.93 GSM AMR DTX Operation Specification
- TS 06.94 Voice Activity Detector for AMR DTX
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TS 06.91?
3GPP TS 06.91 is the 3GPP Technical Specification for AMR Speech Frame Substitution and Muting. Defines frame substitution and muting procedures for handling lost speech or SID frames in AMR channels, improving speech quality during transmission errors.
Which 3GPP releases include TS 06.91?
TS 06.91 is part of 3GPP R98. The latest version on 3GPP Explorer is 7.1.1 (R98).
What category does TS 06.91 belong to?
TS 06.91 belongs to the Services (Voice Services) category of 3GPP specifications. It applies to 2G networks.
View the full specification with interactive table of contents, version history, and AI analysis.
Read Full Specification →