Table of Contents

�1���� Scope����������
�2���� References
�3���� Definitions
������� 3.1���� Terms defined elsewhere�������
������� 3.2���� Terms defined in this Recommendation�����������
�4���� Abbreviations and acronyms
�5���� Conventions
�6���� Network reference model
�7���� Network limits
������� 7.1���� Network limits at reference point A����
������� 7.2���� Network limits at reference point B����
������� 7.3���� Network limits at reference point C����
������� 7.4���� Network limit at reference point D�����
Appendix I � Clock models for noise accumulation simulations����
������� I.1���� T-BC models for noise accumulation simulations������������
������� I.2���� End-to-end TC models for noise accumulation simulations
Appendix II � Hypothetical reference models used to derive the network limits����
������ II.1���� HRM composed of T-BCs
������ II.2���� HRM composed of T-BCs and T-TCs
Appendix III � Network limits considerations����
����� III.1���� Measurement of network limits in deployment case 1�
Appendix IV � Constant and dynamic time error and error accumulation����
������ IV.1���� Introduction��
������ IV.2���� Components of time error
������ IV.3���� Accumulation of time error in a chain of clocks
Appendix V� Example of design options����
������� V.1���� Network limits
������� V.2�� ��Components of time error budgets
������� V.3���� Failure scenarios
������� V.4���� Time error budget allocation��
������� V.5���� Operator options
������� V.6���� Further details
Appendix VI � Mitigation of time error due to synchronous Ethernet transients����
Appendix VII � Maximum relative time error����
Appendix VIII � Models for budgeting in a chain of microwave devices����
Appendix IX � Models for budgeting in a chain of xPON or xDSL devices����
Appendix X � Time error and transients due to PTP rearrangement����
Appendix XI � Measurement of maximum relative time error limits����
������ XI.1���� Measurement of maximum relative time error limits
Bibliography����