Table of Contents

Foreword
0 Introduction
  0.1 Scope
  0.2 Normative references
  0.3 Definitions and abbreviations
1 General
2 Supervisory tones
  2.1 General
  2.2 Method
  2.3 Standard tones
  2.4 Applicability
  2.5 Point of introduction
  2.6 Comfort tones
3 Recorded announcements
Annex A (normative): Application of call control cause
        information elements to supervisory tones
History

Abstract

Describes requirements for call progress and related information to be provided to users of the GSM system.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SMG 1
Supersedes	PRETS 300 512 : MAY 94