I have no dial tone
Check the telephone lead is plugged into the wall and the main base.
Make sure you use the lead that was sent with the telephone set, some leads are not compatible with other phone sets.
Phone cuts out while talking
Batteries may not be holding a charge and need replacing with rechargeable batteries.
Phone will not charge
Make sure phone is sitting in the charger correctly.
Make sure not dirt has stuck to the metal charging contacts.
Batteries may not hold a charge and need replacing with rechargeable batteries.
Not using rechargable batteries. You should remove them now as this could cause a fire.