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APPENDIX
Error Messages
· The system takes no action for the keys pressed during display of the messages
(Error message, Line back...) that resides on the display for a specific period of
time.
· In the event that an incorrect operation is done while in the programming mode,
the error message is displayed in two lines for one second. The user receives
erroneous action tone from the handset during that period. No key pressed in the
meantime is detected and the telephone returns to the upper menu after the error
display is over.
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