how do i restore my new iphone device to my old settings after already selecting set up as new device?

I've gotten a new iPhone 5 which is replacing my old iPhone 5 and I wanted to restore my settings from my old iPhone to the new one. However during the set up of the new iPhone I lost connection from the internet, therefore I chosed to set up my iPhone as a new iPhone. I have now gone onto iTunes to see if it'll let me restore my old iPhone settings and it was providing me with other devices but my old iPhone. How can I restore my old settings or will I have to start over as a new device?