Hi,
If you get busy tone in your Panasonic KX-TGA820 cordless phone, it may be due to any one of the following reasons:
1)The called handset is in use.2)The handset you are calling is too far from the base unit.Check whether the base unit is not so far from the handset
3)There is no handset registered to the base unit matching the extension number you entered.
Try to re-register the handset to the base unit again, To know details regarding registering and re-registering, please refer page 38 of the manual, which you can download from the link given below
4)Other units are in use and the system is busy. Try again later.
Try to check whether the other units are not using your base unit
You can download manual for your phone from the following link for reference
http://service.us.panasonic.com/OPERMANPDF/KXTG8231.PDFPlease rate this solution
Rnj VINODKUMAR
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