1. In a call processing unit capable of supporting a plurality of call classes, a method for determining an eagerness to admit a call, comprising: obtaining first and second load parameters for the call processing unit; fuzzifying the first and second load parameters according to first and second fuzzification functions respectively; comparing the fuzzified first and second load parameters against a defined set of eagerness rules; defuzzifying a result of said comparing; and generating the eagerness based on said defuzzification result.