Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 General requirements
  4.1 References to other ETSs
  4.2 Information to be provided by the applicant
5 Functional requirements specific to Category II
  modems
  5.1 General requirements
  5.2 Modes of operation/use
  5.3 Line signals
  5.4 Line signalling rates
  5.5 Encoding of data
  5.6 Scrambler and descrambler
  5.7 Channel allocation
  5.8 Hand-shaking sequences
  5.9 Transmission of start-stop characters
  5.10 Threshold of received line signal detector
  5.11 Test loop 2
  5.12 Receiver performance
Annex A (normative): Testing methods
  A.1 General testing conditions
  A.2 Test for subclause 5.3.1 (Transmitted carrier
      frequency)
  A.3 Test for subclause 5.3.2 (Receiver carrier
      tolerance)
  A.4 Test for subclause 5.4 (Line signalling rates)
  A.5 Test for subclause 5.5 (Encoding of data)
  A.6 Test for subclause 5.6 (Scrambler and
      descrambler)
  A.7 Test for subclause 5.7 (Channel allocation)
  A.8 Test for subclause 5.8 (Hand-shaking sequences)
  A.9 Test for subclause 5.9 (Transmission of
      start-stop characters)
  A.10 Tests for subclause 5.11 (Test loop 2)
Annex B (informative): Example proforma for the
        declaration of modes of operation/use
Annex C (informative): Bibliography
History

Abstract

Gives technical characteristics required for end-to-end interworking of modems according to CCITT V.32 bis

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	TE 5
Supersedes	PRETS 300 492 : FEB 96