The fixed-line on the iPhone

Exactly what I needed. When I'm at home, my iPhone is transformed into fixed phone
I was looking for a cordless phone for the home that is easy to use.
Can I use my iPhone directory to make calls on my landline. I am even told when trying to call home and I got out.
It connects directly to my box. The installation was very easy and fast thanks to the dedicated app.
It also works with my iPod iPad and children. So now anyone with a wireless home phone.