Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions, symbols and abbreviations
   3.1 Definitions
   3.2 Symbols
   3.3 Abbreviations
4 Functional description of the GSM half rate
   speech codec
   4.1 GSM half rate speech encoder
   4.2 GSM half rate speech decoder
5 Homing sequences
   5.1 Functional description
   5.2 Definitions
   5.3 Encoder homing
   5.4 Decoder homing
   5.5 Encoder home state
   5.6 Decoder home state
Annex A (normative): Codec parameter description
Annex B (normative): Order of occurrence of the
        codec parameters over Abis
Annex C (informative): Bibliography
History

Abstract

This European Telecommunications standard (ETS) specifies the speech codec to be used for the GSM half rate channel. It also specifies the test methods to be used to verify that the codec implementation complies with this ETS. The requirements are mandatory for the codec to be used either in GSM Mobile Stations (MS)s or Base Station Systems (BSS)s that utilize the half rate GSM speech traffic channel.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SMG 11
Supersedes	PRETS 300 969 : DEC 97