http://service.us.panasonic.com/OPERMANPDF/KXTG4500B.PDF
page 80,do this first,
then if you want to reset both phone and base,
clear base unit settings to default,
1 Press {MENU}. 2 Scroll to "Initial setting" by pressing {<} or {>}, then press {ENTER}. 3 Scroll to "Initialize base" by pressing {<} or {>}, then press {ENTER}. 4 Scroll to "Clear settings" by pressing {<} or {>}, then press {ENTER}. L The "Clear settings?" screen is displayed. 5 Press {CLEAR}. L Confirmation tone is heard.
clear handset to default,
Press {MENU}. 2 Scroll to "Initial setting" by pressing {V} or {^}, then press . 3 Scroll to "Initialize HS" by pressing {V} or {^}, then press . 4 Scroll to "Clear settings" by pressing {V} or {^}, then press . L The "Clear settings?" screen is displayed. 5 Press . L Confirmation tone is heard.
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