1     Scope  
 2     References  
 3     Definitions   
 4     Abbreviations    
 5     Conventions      
 6     Mapping GFP frames into PDH signals     
        6.1     Mapping into N × 1544 kbit/s        
        6.2     Mapping into N × 2048 kbit/s        
        6.3     Mapping into N × 44 736
kbit/s     
        6.4     Mapping into N × 34 368
kbit/s