duplex high speed data

1 definition found

duplex high speed data - Free On-line Dictionary of Computing (26 May 2007) :

  Duplex High Speed Data
  DHSD
  
     (DHSD) A term which describes a full-duplex channel that can
     carry 64 kilobits per second.
  
     This is the kind of service provided by an Inmarsat-B type
     portable earth station or a leased line (not ISDN).
  
     (1995-02-02)