Table of Contents

Intellectual Property Rights
Foreword
1 Scope
2 References
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 Data encoding
5 Protocol requirements
  5.1 Presentation layer
  5.2 Data Link layer
  5.3 Physical layer
6 Data transmission requirements: signalling, timing
  and tolerance
  6.1 Data transmission associated with ringing
  6.2 Data transmission not associated with ringing
  6.3 TAS physical characteristics
Annex A (normative): TE connected to the LE via a pair
        gain system - considerations for the Z' interface
Annex B (normative): DTMF based subscriber line protocol
      B.1 Introduction
      B.2 Line seizure phase
      B.3 Alerting phase
      B.4 Information transfer phase
      B.5 Tests
Annex C (informative): Reference configurations
Annex D (informative): Data transmission format
Bibliography
History

Abstract

Defines the protocol for on hook data transmission on analogue lines required to support display services such as Calling Line Identification Presentation for the PSTN.

General Product Information

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