Curtis TID899 - Manual (Page 5)

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ADJUST THE BRIGHTNESS OF LCD DISPLAY ( 9 LEVEL)
WITH THE HANDSET LIFTED,
LCD
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ACTIVIATE THE ‘DO NOT DISTURB’ FUNCTION
Remarks: THIS FUNCTION ALLOWS RINGING OCCURS SOLELY
WHEN A ‘VIP’ CALL COMES IN.
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SET VOICE PAGE NUMBER
WHEN SOMEONE CALLS YOUR TELEPHONE AND THERE IS
NOBODY ANSWER, IT WILL INFORM THE CALLER THE NUMBER
YOU HAVE SET.
e.g. SET THE VOICE PAGE NUMBER TO 6225622
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SET PRE-RINGING LENGTH BEFORE AUTO VOICE PAGE
BROADCAST
e.g. SET 5 RINGING TIMES