A system is provided that includes a control panel of a security system that protects a secured geographic area, wherein a controller enters a set-up mode in response to detecting entry of a code by an authorized user through a user interface and opening of an access door and wirelessly pairs a portable device carried by the authorized user with the control panel and registers the portable device with the controller while in the set-up mode, wherein, when operating in a normal operating mode, the controller detects the portable device and automatically forms a wireless control connection between the portable device and the control panel, and wherein the controller enters a log-on mode during set-up in response to connecting to the portable device and allows the authorized user to unlock the access door and enter a password at the controller, thereby enabling service and control from the portable device.