Panasonic KX-TDA50 Manual page 42

4.3 Registering IP Proprietary Telephones
Once the IP-PT is successfully de-registered, the status of the IP-PT will update to show "None".
42 Information about IP Proprietary Telephones
3. a.
Highlight numbers and click the right arrow to select
them for de-registration.
b.
Click Next.
A dialog box will appear.
c.
Click OK.
A dialog box will appear.
d.
Click Confirm.
• If the de-registration is successful, the dialog box
will show "Forced De-registration Succeed".
e.
Click Close.