Your Vonage Box is shipped to you with instructions on how to set it up. You may need to purchase a travel adapter if your outlet is not the traditional U.S. 2-pin flat socket. To connect your telephone, you must use an RJ11 phone cable with the same plug on each end. The Vonage Box can handle any power voltage between 100V and 240V AC. Our website offers more details related to international set-up instructions.