TBR 020001 : 20001
Current
The latest, up-to-date edition.
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
Hardcopy , PDF
English
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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 |
| 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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