CIR

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

Committed Information Rate
CIR

   <communications> (CIR) The guaranteed average {bandwidth} of a
   {virtual circuit} in a {frame relay} network.  The CIR plus
   the Excess Information Rate (EIR, burst rate) is equal to or
   less than the speed of the access port into the network.

   The term CIR includes voice and non-data packets that are not
   included in the {Committed Data Rate} (CDR).

   (2007-02-28)