Table of Contents

Foreword
Introduction
1 Scope
2 References
3 Definitions and abbreviations
  3.1 Definitions of the names of the tones
  3.2 Abbreviations
4 Description of recommended tone characteristics
  4.1 Dial tone
  4.2 Ringing tone
  4.3 Busy tone
  4.4 Congestion tone
  4.5 Special information tone
  4.6 Call waiting tone
  4.7 Warning tone
  4.8 Caller waiting tone
5 Tolerance limits of tone characteristics
Annex A: Indication tones of real information value to the
         end user
      A.1 Before dialling
      A.2 After dialling
      A.3 After a connection has been established
History

Abstract

Specifies characteristics of telephone services information tones when locally generated in telephony terminals (e.g., terminals in ISDN or mobile networks).

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	HF 1