______________________________3.3.  Ethernet (802.3)      219

  :        
 ,       .    -
  PDV.        
    lOBase-T,     ,  
     ,        
        1,    
      5.

        4-   
       1  6  5 ,   
   lOBase-FB.  ,     2800 ,
   2500 .   PDV   .

  1:15,3 () + 100  0,113 = 26,6.

  2: 33,5 + 1000  0,1 = 133,5.

  3'. 24 + 500  0,1 = 74,0.

  4:24 + 500  0,1 = 74,0.

  5'. 24 + 600  0,1 = 84,0.

  6:165 + 100  0,113 - 176,3.

     PDV,  568,4.

   PDV     575,  
          ,  
    2500 ,      4-.

 PW

    ,    -
   ,    PW.

  PW      -
       -
  ,  IEEE    . 3.6.

 3.6.    

              , bt    , bt

lOBase-5  lOBase-2      16                         11-,
lOBase-FB                                          2
lOBase-FL                 10,5                       8
lOBase-T                  10,5                       8

       PW   .

  1 lOBase-T:   10,5 bt.

  2 lOBase-FL: 8.

  3 lOBase-FB: 2.

  4 lOBase-FB: 2.

  5 lOBase-FB: 2.

     PW,  24,5,   
  49  .

        Ethernet 
 ,     ,    .