So you would like to use your cellphone with your landline phone? The Cell2jack Cellphone to Landline Adapter can do the job. It lets you make and receive phone calls on your landline phone. You will also able able to use Siri or Google Assistant to control your home.
You can use this adapter with corded, cordless, rotary phone, and other landline phones. Simply put your phone in a place with good reception and you are ready to make and receive calls.