CONTENTS

 1     Scope 
 2     References 
 3     Terms and definitions       
 4     Abbreviations and acronyms        
 5     Parameters of system elements     
        5.1     Transmitter parameters      
        5.2     Submarine cable parameters          
        5.3     Submarine repeater parameters      
        5.4     Cable joint parameters       
        5.5     Receivers parameters         
 6     Optical network topology
        6.1     Point-to-point        
        6.2     Star 
        6.3     Branched star        
        6.4     Trunk and Branch  
        6.5     Festoon  
        6.6     Ring 
        6.7     Branched ring        
 7     System design considerations       
        7.1     Optical power budget        
        7.2     Dispersion considerations   
 8     Forward error correction 
 9     Reliability consideration    
        9.1     Reliability requirement        
        9.2     Internal fault           
        9.3     External fault          
        9.4     Fault localization    
10     Upgradeability considerations      
       10.1     Upgrade definitions           
       10.2     Standard upgrades
       10.3     Challenging upgrades        
       10.4     Conclusion           
11     Physical layer compatibility          
       11.1     Single-span longitudinal compatibility         
       11.2     Single-span black-box transverse compatibility      
       11.3     Multi-span black-box full transverse compatibility  
       11.4     Multi-span black-box single-link transverse compatibility   
       11.5     Multi-span black-box multiple-link transverse compatibility
       11.6     Single-span black-link transverse compatibility      
       11.7     Multi-span black-link transverse compatibility        
Bibliography