80     1      

       -
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Telephony, CCITT).     1993   ITU
CCITT        -
       
ITU (ITU Telecommunication Standardization Sector, ITU-T).  -
 ITU-T       -

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        Institute of
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  .  1981    802  -
   ,   
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,       802.1, 802.2, 802.3  802.5,
   ,     ,
        Ethernet  Token Ring.

     (European Computer Manu-
facturers Association, )   ,  -
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,      . -
   -101,    -
       
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      (Computer and Business
Equipment Manufacturers Association, CBEMA)    -
  ;   
;         -
 .

    (Electronic Industries Association, EIA) 
-      -
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