572     6   

.       
  .     -
   Microsoft RAS,     Windows NT,  -
 NetWare Connect,     NetWare.

   dial-in      
,   dial-out      .

 dial-in  dial-out    ,    -
        .

       --
         -
 :  ,      
 .

 

       -   
  (remote node).      -
       ( 
 ISDN)      , -
        -
  .        
,    .  ,   -
      ,   -
 .       
    .       -
      ISDN,    -
      SLIP,    .
  .25  frame relay      -
  ,    LAP-B  .25/3     LAP-F
  (  frame relay    
).        -
, ,     ,   , -
, ,      ,   
     .   
  IP, IPX    NetBEUI.  -
     ,      -
,          , 
          -
        -
 .

,     ,     
  ,       , 
        .  
   ,      33,6 /
  ,   3 %    Ethernet, 
,       30 ,   
    15-20 .      -
  ,  , .