CONTENTS

 1     General
 2     DCE/DTE interface
 3     Signalling
 4     Modes of operation – Timing diagrams
Annex A  –  Automatic call by DTE
Annex B  –  Automatic call by DTE
Annex C  –  Teleprinter + DTE
Annex D  –  Answering by DTE
Annex E  –  Teleprinter answering
References