A:AnswerYes you can call your home phone, once you hear the recorded announcement you can enter the default code or one you assign to the phone to retrieve your messages.
A:Answeryou need power (either a utility source or a battery) -- there is no battery I know of -- so you need an external power source - it is not self-animating
A:AnswerNot that I see. It is Bluetooth enabled so you might be able to connect that way but only within 15 foot range of base. I have Bluetooth hearing aids that I might be able to connect. Haven’t tried.