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TR 23.877 (SA2)
Architectural aspects of
Speech-enabled services

ToC   3GPP‑Page   Help    
V6.0.0 (Wzip)  2004/04  18 p.

Rapporteur:  Dr. Xuan, Qing
See also:  SR-related TS/TR

The service requirements on Speech Enabled Services defined in TS 22.243 may place architectural requirements on the CS and PS domains and the IMS. Additionally various techniques for improving speech recognition performance may be identified which have architectural impact.

The objective of TR is to document these architectural impacts.


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1 Scope2 References3 Definitions and abbreviations3.1 Definitions3.2 Abbreviations4 Techniques for improving speech recognition performance4.1 Additional noise suppression in terminal4.2 Disable DTX for improving ASR performance4.3 Indication of use/non-use of DTX4.4 Indication of codec mode to ASR platform4.5 Command needed to provide high data rate codec for speech recognition mode4.6 TFO needed in ASR platform for AMR wide band mode4.7 Regional accents and ASR platforms5 Impacts of speech recognition improvements on CS domain5.1 High level TFO signalling flows in GSM/UMTS network5.2 Activation mechanism for SRM session5.3 Deactivation mechanism for SRM session5.4 ASR platform outside of the Mobile Network5.5 Charging5.6 Roaming5.7 An alternative solution for triggering speech recognition session via CTM6 Impacts of speech recognition improvements on PS domain6.1 Charging - RADIUS connected to ASR platform6.2 Fetching regional accent information from MSISDN associated database6.3 Roaming7 Impacts of speech recognition improvements on IMS domain7.1 ASR server directly "through connects" the call to the B party7.2 ASR server acting in call transfer mode7.3 Uni-directional codec and SDP7.4 Charging7.5 Roaming - support of roaming users8 Security9 Privacy10 Analysis and conclusions10.1 Impact of potential techniques on network entities10.2 SummaryA Change history


1  ScopeWord-p. 5
2  References
3  Definitions and abbreviationsWord-p. 6
4  Techniques for improving speech recognition performance
5  Impacts of speech recognition improvements on CS domain
6  Impacts of speech recognition improvements on PS domain
7  Impacts of speech recognition improvements on IMS domain
8  SecurityWord-p. 15
9  Privacy
10  Analysis and conclusionsWord-p. 16
A  Change historyWord-p. 18Up

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