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     Packet-based synchronization functional model and general principles           
        6.1     Packet-based synchronization functional model           
        6.2     Synchronization interfaces     
        6.3     Automatic reference selection process (alternate BMCA)         
        6.4     PTP Announce message delay times for NEs   
        6.5     Overview of the processes performed within the atomic functions       
 7     Network synchronization layer atomic functions      
        7.1     NS-p connection function (NS-p_C)    
 8     Synchronization distribution layer atomic functions
        8.1     SD-p connection function (SD-p_C)    
        8.2     Trail termination (TT) functions            
        8.3     Adaptation functions
 9     Transport layer to SD-p layer atomic functions          
        9.1     ETH to SD-p adaptation functions        
        9.2     OTUk to SD-p adaptation functions     
        9.3     OTSn to SD-p adaptation functions     
        9.4     FlexE to SD-p adaptation functions     
        9.5     FlexO to SD-p adaptation functions    
Appendix I – Transport layer models for packet-based synchronization information    
Appendix II – Examples of packet-based synchronization functionality in the NE    
Appendix III – Analysis of message delay times for NEs in packet-based  synchronization networks    
      III.1     Introduction  
      III.2     Non‑switching PTP message delay TPNSM………..           
      III.3     Switching PTP message delay TPSM     
      III.4     PTP Holdover message delay TPHM     
Bibliography