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ETR 187 : 20001

Current
Current

The latest, up-to-date edition.

HUMAN FACTORS (HF); RECOMMENDATION OF CHARACTERISTICS OF TELEPHONE SERVICES TONES WHEN LOCALLY GENERATED IN TELEPHONY TERMINALS
Available format(s)

Hardcopy , PDF

Language(s)

English

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

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

Committee
HF 1
DocumentType
Standard
Pages
12
PublisherName
European Telecommunications Standards Institute
Status
Current

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