smds

from The Free On-line Dictionary of Computing (8 July 2008)

Switched Multimegabit Data Service
SMDS

   <networking> (SMDS) An emerging high-speed {datagram}-based
   public data {network} service developed by {Bellcore} and
   expected to be widely used by telephone companies as the basis
   for their data networks.

   See also {Metropolitan Area Network}.

   (1997-01-31)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

SMDS
       Switched Multimegabit Data Service (BELLCORE, BIT)