6.2.            495

    ,   ,    
 .

         (. 6.14).
       
      ,   DCE, -
     .   -
,     ,        DSU/CSU.
   DCE     RS-232C  -
    RS-449  V.35    
1/1.   /    HSSI.

      -
,      RS-449/V.11,   RS-449/V.10,   V.35.

 G.703

s 5 t s				(    )				 s S21	
		 w u				3 U)			
										
										

 RS-449

IP =201,20.23.64
255.255.255.252
 

1

IP =201.20.23.128

255.255.255.192

 2
IP =201.20.23.0
255.255.255.192

. 6.14.      

 . 6.14         1,
 /       DSU/
CSU    RS-449    G.703.  -
       G.703,  -
   DSU/CSU .      
,    DCE    ,  
   ,      (,
 , )     
   : 4-  2-.

         .
          
      (    
 )     .   -
          
     ,   
  ,         -
.        
     .  ,  
   -,      -
      LPC,     -
 (         ).