Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 General principles
5 Requirements
   5.1 Error detection
   5.2 Lost speech frames
   5.3 First lost SID frame
   5.4 Subsequent lost SID frames
6 Example solution
   6.1 Example solution for substitution and muting
       of lost speech frames
   6.2 Example solution for substitution and muting
       of lost SID frames
History

Abstract

Defines a frame substitution and muting procedure which shall be used by the Receive (RX) Discontinuous Transmission (DTX) handler when one or more lost speech or Silence Descriptor (SID) frames are received from the Radio Sub System (RSS). The requirements of this ETS are mandatory for implementation in all GSM Base Station Systems (BSS)s and Mobile Stations (MS)s capable of supporting the enhanced full-rate speech traffic channel. It is not mandatory to follow the bit exact implementation outlined in this specification and the corresponding C-source code.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SMG 2
Supersedes	PRETS 300 727 : NOV 96