__   ___3.5.  FDDI      233

  .    ( -
 )        , 
       ,   -
.   ,   .

 ,       -
       TRT  
 _0.    ,    , 
  _0,   TRT < _0.     -
       ( )  .  
    T_0pr - TRT,      
     ,  .

      ,   TRT  
_0.           
.          , 
      ,    
   ,        -
           
.

  FDDI       -
    .

3.5.3.   FDDI

     FDDI  
      .   FDDI -
      .   
        Dual
Attachment, DA.       -
   Single Attachment, SA.

  FDDI        
(Station),    (Concentrator).    
        ,   . -
     : SAS (Single
Attachment Station), DAS (Dual Attachment Station), SAC (Single Attachment
Concentrator)  DAC (Dual Attachment Concentrator).

    ,    ,
    . 3.18,     .   
    ,   .   
        ,   (Master) -
      ,   
    S (Slave).

         -
  FDDI       
       -
 (. 3.19).        -
  FDDI.   ,     
,     ,    