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 for cir
From The Free On-line Dictionary of Computing (30 December 2018) :

  Committed Information Rate
      (CIR) The guaranteed average data rate 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).  CIR is generally
     used in reference to leased lines and similar classes of
     network services, not dial-up.

Contact=webmaster@dict.org Specification=RFC 2229