Allo...

Sur le pont du Garigliano, une drôle de cabine téléphonique vous attend...

Over the bridge of Garigliano, an amazing public phone is waiting for you...

"My name is Sophie Calle. You are in my "public-phone". I am the only one who knows his phone number. I'll dial it regulary, but in a random range of time, just to get hope that someone will pick up".