half-duplex

1 definition found

half-duplex - Free On-line Dictionary of Computing (26 May 2007) :

  half-duplex
  hdx
  
     <communications> (hdx, from telegraphy) 1. A type of
     communication channel using a single circuit which can carry
     data in either direction but not both directions at once.
  
     Compare: simplex, full-duplex.
  
     2. An obsolete term for local echo.
  
     (2001-07-21)