1. A communication system having a plurality of terminals associated therewith, each such terminal operable for establishing communication connections as a result of stimuli generated from said terminals, said communication system including a call processing module, said module comprising means for receiving said stimuli from said terminals, means for associating each said received stimuli with the terminal sending said received stimuli, means for establishing a queue of said received stimuli from said terminals in order of the arrival of said stimuli, means for processing from said queue stimuli associated with a particular terminal in order of arrival of said stimuli, and means for intermixing the processing of stimuli associated with different terminals so that a set of stimuli from a given terminal need not be processed to completion prior to processing stimuli from another terminal.