Table of Contents

Foreword
Introduction
1 Scope
2 References
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 User requirements on text telephony
  4.1 The users
  4.2 User requirements
5 Relations with other services
  5.1 Audio-visual and multi-media services
  5.2 Paging services
  5.3 Short message facility of the GSM network
  5.4 Fax
  5.5 Screen based telephony
  5.6 Use of electronic mail
  5.7 Use of a PC and currently available data
      communication modems for text telephony
  5.8 Use of video telephony or multi-media communication
      for text telephony
  5.9 Conclusion
6 The current methods for text telephony
  6.1 The dialogue
  6.2 The transmission methods
7 Implementation possibilities
  7.1 General implementation possibilities
  7.2 Implementation possibilities in PSTN
  7.3 Implementation possibilities in ISDN
  7.4 Implementation possibilities in GSM
  7.5 Implementation possibilities in UMTS
  7.6 Implementation possibilities in Internet
8 Protocols
  8.1 Presentation
  8.2 Transmission
  8.3 Interworking between networks
  8.4 Interworking with current text telephones in PSTN
History

Abstract

Gives a summary of the basic user requirements and provides information on the existing text telephone methods, characteristics of alternative implementations, and recommendations for implementations in different networks.

General Product Information

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