CONTENTS

�1���� Scope�
�2���� References�
�3���� Terms and definitions�������
������� 3.1���� Definitions�
������� 3.2���� Terms defined in other Recommendations���
�4���� Abbreviations���
�5���� Characteristics and performance of the system������
������� 5.1���� Characteristics and performance of the digital line sections��
������� 5.2���� Characteristics and performance of the optical sections�������
������� 5.3���� System reliability performance��������
������� 5.4���� System capacity upgradeability�������
�6���� Characteristics and performance of the terminal equipment
������� 6.1���� General��
������� 6.2���� Transmission performance��
������� 6.3���� Actions consequent to an alarm������
������� 6.4���� Automatic switching�����������
�7���� Characteristics and performance of the submarine cable����
������� 7.1���� Scope����
������� 7.2���� Transmission characteristics�����������
������� 7.3���� Mechanical characteristics and resistance to the environment�����������
������� 7.4���� Characteristics of fibres in a submarine cable����������
Annex A � Implementation of repeaterless optical fibre submarine cable systems����
������� A.1���� Introduction����������
������� A.2���� System configuration���������
������� A.3���� Characteristics of the line signal�����
������� A.4���� System operation��
������� A.5���� Passive branching unit characteristics���������
Annex B � Repeaterless optical fibre submarine cable systems using remotely pumped optical amplifiers: Optical power budget between optical reference points S and R and line monitoring����
������� B.1���� Remotely pumped optical amplifiers�����������
�� �����B.2���� Optical power budget for systems using remotely pumped optical amplifiers
������� B.3���� Line monitoring for pumping portion�����������