Hi Janet 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 Panasonic base unit.
Additionally, who is your phone service provider please?
Apologies for the delay; Internet was sluggish.
Perhaps a KX-TG465SK?
If yes, have you tried dialing you own number using the Panasonic? ...any VoiceMail messages?