1. A system for use in processing a plurality of calls coming into a contact center, each of the plurality of calls comprising a streaming voice signal, the system comprising: an interceptor operable to receive the plurality of calls; a recognizer, operably coupled to the interceptor, operable to continuously analyze a call of the plurality of calls to detect occurrence of an unprompted predetermined utterance having response-determinative significance to provide a detected utterance; and a treatment processor, operably coupled to the recognizer, operable to determine a responsive action based on the response-determinative significance corresponding to the detected utterance.