For Enhanced Redirection Notification, you must enable at least one of the Redirection Notification options listed in the Feature-Related System Parameters screen. For example, if you enable all the redirection notification options, all the notifications appear on the IP (H.323) telephones. The system does not check the notifications to be displayed when you disable all the options. However, if you activate Do Not Distrub (DND) notification field, the endpoints display only the DND notification. This is because the system checks the displayed notifications only when you enable at least one of the options.