V23

1 definition found

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

  V.23
       
          An old {ITU-T} {modem} {protocol} which allowed {half-duplex}
          (unidirectional) data transmission at 1200 bits per second.
          This was the main standard used for {British Telecom}'s
          {Prestel} service.