Panasonic KX-TG6021NZ Operating Instructions Manual page 37

Registration
Problem
The handset registration
may have been cancelled
or the communication
between the base unit and
the handset is unstable.
Cause/solution
L Re-register the handset.
Handset: {MENU} i {0}{0}{1}
1
Base unit: Press and hold {LOCATOR} until
2
the IN USE indicator flashes.
Handset: Press {OK}, then wait until a beep
3
sounds. i {OFF}
If the registration fails, try to deregister the
handset first:
KX-TG6021
Press {MENU} i {0}{0}{2} i {3}{3}{5}
i {OK} i {1}, then re-register it again.
KX-TG6022
Use another handset to deregister the unstable
handset. Press {MENU} i {0}{0}{2} i
{3}{3}{5} i {OK} i {1} or {2} (The
handset number which you want to cancel). Try
to re-register it again.
L If the above remedy does not solve the problem,
consult your nearest Panasonic service centre.
Useful Information
37