The choice? If has not changed in the last 5years then your choice is Turk Telecom TTNET, no need for USwitch in Turkey. Check out search facility, input telephone or Turk Telekom you may get your answers. If matters have not changed then you will be able to get a line installed in your name as long as you have residency, so you may have to wait a while, if you have a good neighbour or friend Turkish or someone with residency they can or used be able to order in their name. Good luck:-)