HDLC

from The Free On-line Dictionary of Computing (8 July 2008)
High-level Data Link Control
HDLC

   <networking> (HDLC) A general-purpose {data link} control
   {protocol} defined by {ISO} for use on both point-to-point and
   {multipoint} (multidrop) data links.  It supports
   {full-duplex}, {transparent-mode} operation.  It is used
   extensively in both multipoint and computer networks.

   Some manufacturers and other standards bodies still use their
   own acronyms, e.g. {IBM}'s SDLC ({Synchronous Data Link
   Control}), the forerunner of HDLC and {ANSI}'s ADCCP
   ({Advanced Data Communications Control Procedure}).

   [Fred Halsall, "Data Communications, Computer Networks and
   Open Systems" 4th edition, 1996, p.237, Addison-Wesley
   Publishing Co. Reading, Mass., USA].

   (1997-11-09)