CONTENTS

 1     Scope 
 2     References 
 3     Definitions  
 4     Abbreviations   
 5     Conventions     
 6     Specification of the virtually concatenated interfaces          
        6.1     Interface at N × 1544 kbit/s with virtual concatenation of a clear channel payload    
        6.2     Interface at N × 2048 kbit/s with virtual concatenation of a clear channel payload    
        6.3     Interface at N × 34 368 kbit/s with virtual concatenation of a clear channel payload 
        6.4     Interface at N × 44 736 kbit/s with virtual concatenation of a clear channel payload