Table of Contents

Foreword
Introduction
1 Scope
2 Normative reference
3 Abbreviations
4 TBR-Requirements
  4.1 Safety
  4.2 Electro-Magnetic Compatibility (EMC)
  4.3 Physical layer requirements
      4.3.1 General characteristics
      4.3.2 Connector characteristics and contact
            number assignments
      4.3.3 Generator characteristics
5 TBR test specification
  5.1 Conditions of test
      5.1.1 Environment for tests
      5.1.2 Power supply limitations
      5.1.3 Test state
      5.1.4 Test point
      5.1.5 Bit patterns
      5.1.6 Signal element timing
      5.1.7 Interchange circuits presentation
      5.1.8 Physical layer tests
  5.2 Test descriptions
      5.2.1 Connector characteristics and contact
            number assignments
      5.2.2 Generator characteristics
  5.3 TBR 1 Test Case Selection Expression Definition
      Table
  5.4 Test case index
Annex A (normative): The TBR Requirements Table
        (TBR-RT)
        A.1 Introduction to the TBR-RT
        A.2 Format of the tables
        A.3 Notations used in the TBR-RT
        A.4 The TBR Requirement Tables (TBR-RTs)
Annex B (normative): Physical layer Implementation
        extra Information for Testing (PIXIT)
Annex C (informative): Bibliography
History

Abstract

Defines technical characteristics of terminal equipment using CCITT recommendation X.21 interface which can be connected to circuit switched public data networks and leased circuits.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	TE 5
Supersedes	PRTBR 001 : MAY 94