Those programmable button not assigned as appearance buttons by your administrator can be used for a range of other features. Those other features can be programmed by you or by your system administrator.
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Your administrator can restrict which buttons you can change.
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This guide only covers those features that you may be able to assign through the phone's own menus. Your administrator has access to a larger range of button functions.
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The use of the button lamps depends on the feature assigned to the button.
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Buttons programmed with a feature that is not supported by the phone, display as Invalid.