Sharp UX-B800 - Manual (Page 54)

Option Settings
52
DIAL TONE
DETECTION
Press (YES) to have the machine verify the presence of a
dial tone on the line before automatic dialling. Press (NO) to
turn this function off.
Note: If you select YES and find that the machine is unable to dial,
change the setting to NO.
Initial setting: NO
KEY TONE
Press (ON) to have the machine sound a beep each time a
key is pressed on the operation panel (this confirms that the key
has been correctly pressed). Press (OFF) to turn off the
beep sound.
Initial setting: ON
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