Panasonic manuals, page 182
Panasonic KX-TC1811B Manual
Panasonic KX-TC1831W Manual
Panasonic KX-TC1850B Manual
Panasonic KX-TC1851B/KX-TC1851W/KX-TC1852B Manual
Panasonic KX-TC185-B Manual
Panasonic KX-TC1861B Manual
Panasonic KX-TC1866B/KX-TC1866W Manual
Panasonic KX-TC1867B/KX-TC1870B Manual
Panasonic KX-TC1868B/KX-TC1871B/KX-TC1872B Manual
Panasonic KX-TC1743B KX-TC1743W KX-TC1743F KX-TC1743G or KXTC1743PW Manual
Panasonic KX-TC1750B Manual
Panasonic KX-TC1800B Manual
Panasonic KX-TC1801B KX-TC1802B Manual
Panasonic KX-TC1710B Manual
Panasonic KX-TC1711B KX-TC1711W Manual