10KEY FUNCTIONSNETWORK: The SMT-i5243 uses VoIP communication through an already-installed data network.LCD SCREEN: Various functions are displayed on the LCD screen, so you can usethem conveniently by using the Navigation buttons on the phone.SHORT MESSAGE SERVICE (SMS): You can exchange text messages usingthis function. This function is available on internal IP stations.TELEPHONE STATUS INDICATORThe indicators are turned on or off depending on the status of relevant functions.SCREEN STRUCTUREThe LCD screen consists of three areas.• STATUS DISPLAY: On the top of the screen, the icons representing phonefunction settings are displayed.• MAIN SCREEN: On the main screen, selectable menus, call processing status,and various messages are displayed.• MENU DISPLAY: At the bottom of the screen, menus that the user can selectdepending on status are displayed.Screen Status LED IndicatorWhen station is busy Red colored indicator isconstant.When station is receiving anincoming call Red indicator (slow flash).When there is a messageDuring “Do Not Disturb” Red indicator (fast flash).Incoming Trunk Call Green colored indicatorflashes.Hold Recalls Amber colored indicatorflashes.Status DisplayMain ScreenMenu DisplayTEXT INPUT METHODUsing the dial and direction buttons on the phone, you can enter and modify theEnglish characters, numeric and special characters.Whenever you press the dial button [] on a text input screen, the input mode ischanged in sequence.Text Input Example• Use the dial buttons to type English text and numbers; and use theNavigation button to move the cursor left and right and OK buttons to com-plete input. When removing the typed characters, select the Del soft button.English Input: Select this mode (uppercase/lowercase) by pressing the []button, and type text by repeated pressing the dial buttons.Number Input: Select this mode by pressing the [] button, and type num-bers by pressing the dial buttons.Special Character Input: Select this mode by pressing the [#] button; selecta desired character by using the Navigation button; and press the OK buttonto enter it.Keypad Character Entry11Aa123#Uppercase Input ModeLowercase Input ModeNumeric Input ModeSpecial Character Input ModeCount 1 2 3 4Dial A(Uppercase)a(Lowercase)1(Numbers)$(Special Characters)Dial # Not UsedDial 0 Not UsedDial 1 Not UsedDial 2 A B CDial 3 D E FDial 4 G H IDial 5 J K LDial 6 M N ODial 7 P Q R SDial 8 T U VDial 9 W X Y Z