Компьютерные технологии в науке и образовании. Смирнов С.А. - 9 стр.

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, ,
    (100   ). ,
      , 
.
  (Wide Area Network) 
  ,     .
     ,
  ,       .
       
 (PSTN, Public Switched Telephone Network) 
       
  (ISDN, Integrated Services Digital Network).  ISDN
     ,  
.
  : , ,
, .
       
 (, ).
   –   ,
.
     
     
.
    
.
 – .
  ,     
    ,    .
.
                                             ,                                                       ,
                                         (100                        ).                          ,
                                                                              ,
.
                                                     (Wide Area Network)
                             ,                                                                       .
                                                                                                     ,
             ,                                                                                       .


    (PSTN, Public Switched Telephone Network)


                 (ISDN, Integrated Services Digital Network).                                  ISDN
                                                                 ,
                                     .

                                                             :            ,                          ,
     ,                                                                                .


                                                 (       ,                                ).
                                                 –                                                   ,
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