�1����
Scope
�2����
References
�3����
Terms
and definitions
������� 3.1����
Definitions
������� 3.2����
Terms
defined in other Recommendations
������� 3.3����
Terms
defined in other standards
�4����
Abbreviations
�5����
General
considerations
������� 5.1����
Safety
considerations for avoiding damage to the human eye and skin
������� 5.2����
Considerations
to keep fibres damage-free
�6����
Procedures
and guidelines
������� 6.1����
General
������� 6.2����
APR
procedures for systems employing discrete optical amplification
������� 6.3���� APR procedures for systems
based upon distributed Raman amplification
Appendix I
� Examples of APR architectures for systems (including those based upon Raman
amplification) deploying an OAC
������� I.1����
�� Considerations on using an OAC
instead of a restart pulse for automatic restart
������� I.2����
�� Description of APR
procedure using co-propagating OSC
������� I.3����
�� Description of APR procedure using
counter-propagating OSC
Appendix II
� Description of ALS/APSD procedures for single-channel point-to-point SDH
systems
������ II.1����
Introduction
������ II.2����
Single-channel
point-to-point SDH without line amplifiers
������ II.3����
Single-channel
point-to-point SDH with line amplifiers
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