Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions, Symbols and abbreviations
   3.1 Definitions
   3.2 Symbols
   3.3 Abbreviations
4 General
5 Functions on the transmit (TX) side
   5.1 Background acoustic noise evaluation
   5.2 Modification of the speech encoding
       algorithm during SID frame generation
   5.3 SID-frame encoding
6 Functions on the receive (RX) side
   6.1 Averaging of the GS parameters
   6.2 Comfort noise generation and updating
7 Computational details
History

Abstract

Specifies the detailed requirements for the correct operation of the background acoustic noise evaluation, noise parameter encoding/decoding and comfort noise generation in GSM Mobile Stations (MS)s and Base Station Systems (BSS)s during Discontinuous Transmission (DTX) on half rate speech traffic channels.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SMG 11
Supersedes	PRETS 300 971 : DEC 96