Programmable Settings22Programming using the function keysYou can program features using the functions keys ({F1}, {F2} and {F3} keys).For your reference, a chart of all programmable functions is printed below. Details for eachitem can be found on the corresponding pages.Important:L Before programming, make sure the unit is not being used.1 To begin programming, press {MENU} ({F2} key).2 Press {<} or {>} to scroll through the main menu.3 Press {SELECT} ({F3} key) to select the desired main menu item.4 Press {<} or {>} to scroll through the sub-menu.5 Press {SELECT} ({F3} key) to select the desired sub-menu item.6 Press {<} or {>} repeatedly to select the desired setting.7 Press {SAVE} ({F3} key) to save the new setting.8 Press {STOP} to exit programming mode.Note:L The default settings are indicated by *.During programming:L To exit programming, press {STOP} at any time.L You can press {SET} instead of pressing {SELECT} ({F3} key) and {SAVE} ({F3} key).L To go back to the previous menu, press {BACK} ({F1} key).L A Q indicates the current setting.Main menu Sub-menu Option Reference pagefor programmingCaller list - - page 18RingersettingRinger volume Low, Medium, High*, Off page 23Ringer tone Pattern 1*–3 page 23InitialsettingLCD contrast Level 1–6 (Default: 3) page 23Key tone On*, Off page 25Set area code - page 24Set recall time 900 ms, 700 ms, 600 ms,400 ms, 300 ms, 250 ms,200 ms, 160 ms, 110 ms,100 ms*, 90 ms, 80 mspage 24