Network-based method for notification of the best time to call

A method for processing a telephone call within a telecommunication network for notifying a calling party while making a telephone call of a minimum cost calling plan or period for completing the telephone call. During telephone service connection invocation but before charges are billed, a subscriber is provided with a notification suggesting the telephone call would be cheaper if made on a different day or time. Also the notification may state that different calling plan would be cheaper at the time of the telephone call.