If for some reason, the phone does not do what it is supposed to do, then the handset can be reset.
Below you can see how this should be done.
Place 1 battery in the handset while inserting the 2nd battery. press and hold the button with the * in it.
Until the display shows "factory reset" , the hand set will now be completely reset.
Please note that all numbers and settings will have to be entered again.
Reconnect the handset