ATTACHMENT REQUIREMENTS FOR TERMINAL EQUIPMENT TO BE CONNECTED TO CIRCUIT SWITCHED DATA NETWORKS AND LEASED CIRCUITS USING A CCITT RECOMMENDATION X.21 INTERFACE, OR AT AN INTERFACE PHYSICALLY, FUNCTIONALLY AND ELECTRICALLY COMPATIBLE WITH CCITT RECOMMENDATION X.21 BUT OPERATING AT ANY DATA SIGNALLING RATE UP TO, AND INCLUDING, 1 984 KBIT/S

Available format(s)

Hardcopy , PDF

Language(s)

English

Publisher

European Telecommunications Standards Institute

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

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.

Committee	TE 5
DocumentType	Standard
Pages	21
PublisherName	European Telecommunications Standards Institute
Status	Current
Supersedes	PRTBR 001 : MAY 94

Standards	Relationship
NBN TBR 001 : 1999	Identical
UNE-TBR 1:1999	Identical

TR 101 844 : 1.1.1	ACCESS AND TERMINALS (AT); STUDY OF THE GLOBAL USAGE AND ACCEPTANCE OF NON-RADIO TBRS AND ASSOCIATED DOCUMENTS
TR 103 050 : 1.2.1	ACCESS AND TERMINALS (AT); DIGITAL ACCESS TO PUBLIC TELEPHONE NETWORKS; APPLICABILITY OF ITAAB ADVISORY NOTES TO TBRS

ISO 4903:1989

Information technology Data communication 15-pole DTE/DCE interface connector and contact number assignments

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TBR 020001 : 20001

Current

Table of Contents

Abstract

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