�1���� Scope�
�2���� References�
�3���� Terms and definitions�������
�4���� Abbreviations���
�5���� Conventions�����
�6���� Individual and group protection
concept���
�7���� Architecture types
������� 7.1���� 1+1 protection architecture
������� 7.2���� 1:n protection architecture��
������� 7.3���� m:n protection architecture�
������� 7.4���� (1:1)n protection
architecture����������
�8���� Switching types�
�9���� Operation types
10���� Protocol types�
11���� Protection classes and subclasses
������ 11.1���� Trail protection�����
������ 11.2���� SNC protection����
12���� Survivability offered by LCAS����
������ 12.1���� LCASfunctional model�����
13���� Protection switching performance
14���� Hold-off timer��
15���� Wait-to-restore timer������
16���� Automatic Protection Switching (APS) signal�������
17���� Non-preemptible Unprotected Traffic (NUT)������
18���� Extra traffic (protection) transport entity overhead/OAM�
19���� External commands���������
20���� Protection switching process states����������
21���� Priority������
22���� SF and SD trigger conditions������
���� ��22.1���� Overview of SF conditions
������ 22.2���� Overview of SD conditions�����������
23���� Working and protection allocation�����������
24���� APS protocol��
������ 24.1���� 1-phase�
������ 24.2���� 2-phase�
������ 24.3���� 3-phase�
Appendix I �
Implementation of hold-off timer����
Appendix II �
Automatic conditions (SF, SD) in group SNC protection����
Appendix
III � Implementation observations����
����� III.1���� Analysis��
Appendix IV � An
example of (1:1)n protection����