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