21. The method of claim 20, further comprising the step of: at a predetermined time, modifying the model of the user's calling behavior in accordance with the training set.
22. The method of claim 21, wherein the model of the user's calling behavior includes weights determined from previous calls by the user to at least one of the telephone numbers, and wherein the modifying step includes the substep of: altering the weights of the user's calling beavior model to reflect the information related to the previous call.