Hi Susan and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, bear with us; re-confirm and post back with the complete model number of the base unit. A KX-TGA470 is the handset.
Additionally, who is your phone service provider please?
Appreciate the additional information.
For starters; have you tried pressing and holding on the # ***** of the handset until it beeps?