484     6   

    . ,    
        . 
     SONET/SDH    
  ,     
 .       
 (   SPE  Synchronous Payload Environment) -
      .  
 SPE   HI,     . -
 ,   ,     -
           
      .    
         
  STS-1.         -
 ,     . 6.9.

SPE 879

 STS-1					3 	
	H1-f-^'"^	^				
					<>^,	
				^^^^		
			11				
 STS-1							
						
						


 

VC  
 1:39 = 27 

. 6.9.       

         
   STS-n.     1/1  /
       STS-n.  -
   ,   HI,   -
  .        
  4,       -
 .  .    -
,   24    1,'      
  STS-1.       
     .

 ,  STS-n     ,  
        -
      ,    -
  .

      -
      ,   .
       1  
   1,544 /,  1,728 /.

  SONET/SDH  ,    
    STS-n.     ,  -