Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 Common requirements
  4.1 General notes
  4.2 PSTN access requirements
  4.3 Information to be provided by the applicant
5 Requirements common to some Category II modems
  5.1 General notes
  5.2 Call establishment sequence based upon CCITT
      Recommendation V.25
  5.3 Test loop implementation based upon CCITT
      Recommendation V.54
  5.4 Threshold of received line signal detection
  5.5 Requirements for modems providing asynchronous
      to synchronous conversion based upon CCITT
      Recommendation V.14
  5.6 Performance
Annex A (informative): Testing methods for national
                       variants for clause 4
  A.1 General notes
Annex B (normative): Testing methods for clause 5
  B.1 General conditions for test
  B.2 Tests of the call establishment sequence
      specified in subclause 5.2
  B.3 Tests to verify the test loop implementation
      specified in subclause n specified in subclause
      5.55
  B.4 Tests to verify the threshold of line signal
      detection
  B.5 Tests to verify the process of asynchronous to
      synchronous conversion specified in subclause 5.5
  B.6 Performance testing methodology
Annex C (normative): Description of specialised test
                     facilities, specification of test
                     lines for use in assessing the
                     performance of Category II modems
  C.1 General
  C.2 Test set-up
  C.3 Test Line 1 transmission characteristics
  C.4 Test Line 2 transmission characteristics
  C.5 Test Line 3 transmission characteristics
Annex D (normative): Provision of test tools
Annex E (informative): Example of proforma chart for
                       information request
Annex F (informative): Bibliography
History

Abstract

Specifies the technical characteristics to be met by modems seeking approval for connection to the PSTN. Contains clauses that define the approval criteria for certain features that may be provided by some Category II modems; the requirements in these parts are only mandatory when invoked by a modem specific European Telecommunication standard.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	TE 5
Supersedes	PRETS 300 114 : FEB 96