TabsTabs are the top categories for classifying settings. When you click a tab, the corresponding menu itemsand the configuration screen of the first menu item appear. There are 6 tabs for the Administrator accountand 4 tabs for the User account. For details about the account types, see Access Levels (IDs andPasswords) in this section.MenuThe menu displays the sub-categories of the selected tab.Configuration ScreenClicking a menu displays the corresponding configuration screen, which contains the actual settings,grouped into sections. For details, see 4.2 Status to 4.7.6 Restart.ButtonsThe following standard buttons are displayed in the Web user interface:Button FunctionWeb Port Close Closes the Web port of the unit and logs you out of the Web user interface aftera confirmation message is displayed.Save Applies changes and displays a result message (® see Result Messages inthis section).Cancel Discards changes. The settings on the current screen will return to the valuesthey had before being changed.Refresh Updates the status information displayed on the screen. This button isdisplayed in the upper-right area of the [Network Status] and [VoIP Status]screens.Entering CharactersIn the Web user interface, when specifying a name, message, password, or other text item, you can enter anyof the ASCII characters displayed in the following table with a white background.However, there are additional limitations for certain types of fields as follows:• Number field– You may only enter a sequence of numeric characters.– You cannot leave the field empty.• IP Address field– You can enter the IP address using dotted-decimal notation (i.e., "n.n.n.n" where n=0–255).Document Version 2012-02 Administrator Guide 251.1.6 Web User Interface Programming