CONTENTS

        2.1     Signal code for line signalling
                  2.1.1     General
                  2.1.2     Transit working
                  2.1.3     Sending duration of line signalling
                  2.1.4     Recognition times of line signals
                  2.1.5     Line signal code of System No. 5
                  2.1.6     Further specification clauses relative to the signalling code
                  2.1.7     Backward signals on multilink connections (consider as an example a connec-tion A‑T‑B)