cell to cordless base stations

How can I connect my cell phone to a cordless base station?

Vtech DS6522-4 4 Handset Connect to Cell Answering System

Episode 1297

Keetahn from Walnut, CA

Keetahn wants to know if he can hardwire a speaker to his cell phone that will let people hear the phone ringing in another room. Leo says that a Bluetooth speaker would be ideal, but the problem is that it can lose connectivity and would need re-pairing. Leo says the best is a base station corded phone that he can pair with his cell phone service.