CONTENTS

 1     Scope 
 2     References 
 3     Terms and definitions       
        3.1     Terms defined in other Recommendations   
        3.2     Definitions 
 4     Abbreviations   
 5     Characteristics and performances of the system    
        5.1     Characteristics and performance of the Digital Line Sections (DLS)
        5.2     Optical power budget        
        5.3     System reliability performance        
        5.4     System capacity upgradeability       
 6     Characteristics and performance of the TTE         
        6.1     General  
        6.2     Transmission performance  
        6.3     Actions consequent to an alarm      
        6.4     Automatic switching           
 7     Characteristics and performance of the Optical Submarine Repeaters (OSR)        
        7.1     Mechanical characteristics  
        7.2     Electrical characteristics     
        7.3     Optical characteristics        
        7.4     Supervisory facilities          
        7.5     Fault location         
        7.6     Reliability
 8     Characteristics and performance of the in-line Branching Unit (BU)           
        8.1     General  
        8.2     Mechanical characteristics  
        8.3     Electrical characteristics     
        8.4     Optical characteristics        
        8.5     Supervisory facilities          
        8.6     Fault location         
        8.7     Reliability
 9     Characteristics and performance of the submarine cable    
        9.1     Scope    
        9.2     Transmission characteristics           
        9.3     Characteristics of fibre in a submarine cable
        9.4     Mechanical characteristics and resistance to the environment           
        9.5     Electrical characteristics     
Annex A – Implementation of repeatered optical fibre submarine cable systems  using optical fibre amplifier    
        A.1     Introduction          
        A.2     System configuration         
        A.3     System performance         
        A.4     System operation  
        A.5     Optical Submarine Repeater (OSR) and Branching Unit (BU) characteristics