X25

1 definition found

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  X.25
       
           An {ITU-T} {standard} {protocol} suite
          for the {DTE}-{DCE} interface in a {packet-switched} network,
          approved by {ISO}.  X.25 defines standard {physical layer},
          {data link layer} and {network layers} (layers 1 through 3).


          It was developed to describe how data passes into and out of
          public data communications networks.  X.25 networks are in use
          throughout the world.
       
          Document: {ISO} 8208.
       
          Several other {ITU-T} recommendations are relevant to {packet
          switching}: {X.3}, {X.28}, {X.29}, {X.75}.
       
          (1996-08-10)