My DECT6.0 telephone will not give me a dial tone nor answer any calls neither will the additional handset..Although my verizon direct line functions as it designed
Here are some tips, found online:
Reset the phone:
Unplug the battery in the handset, unplug the phone line from the base and unplug the electricity from the base. Leave everything unplugged for an hour or two instead of a couple to five minutes that way you can get more of an idea of whether your phone will work. After an hour or two plug in everything. If resetting the phone doesn't work then try the next step.
Check the surge protector:
Is the phone line plugged into a surge protector? The surge protector may have stopped working or blown a surge, a sudden burst of electricity, which may have caused the dial tone in your cordless phone to go. Unplug the phone line from the surge protector then plug it back in and see if you get a dial tone. It could be that the phone line plugged into the surge was loose or not plugged in securely.
Try a different phone plug, outlet.
Check the base:
Is the base dusty and have possible dirt in the prongs where the phone sits? Lift the base and blow off dust.
Check the handset for dirt.
Rub metal connections on handset and base:
Use a pen cap or coin and rub the metal connections on the bottom of the handset. Rub the prongs, metal connections on base.
Hope these suggestions help.