Panasonic KX-TGA740B Support Question
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Question posted by crherman6375 on February 25th, 2015
How Do I Unregister A Handset That Is Inop & Has No Display
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Current Answers
Answer #1: Posted by TommyKervz on February 25th, 2015 2:13 PM
To deregister a handset, follow this procedure here
or
Try to reset the phone system,
- Disconnect the main base unit from the power supply and the telephone line
- Remove the batteries from all of the handsets for approximately 1 hour.
- Re-insert the batteries into the handsets and power up the base unit
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