A method is provided for customizing a call control rule by a subscriber at a graphical user interface. The method includes providing a first display, including multiple conditions relating to identifying calls involving the at least one telephone number, and receiving a first selection of at least one identifying condition. The method further includes providing a second display, including multiple call dispositions relating to processing the calls based on the at least one selected condition, and receiving a second selection of at least one call disposition. The identifying condition and the call disposition are stored as the call control rule in association with the telephone number, and calls involving the telephone number are processed in accordance with the stored call control rule. The method may also include providing a third display describing the call control rule contemporaneously with receiving the first and second selections.