To send a fax internationally is the same as calling intenationally. You will need to know the fax number you are calling along with the country code. To dail outside of the US you will first dial 011 then the country code and phone number. If you are dialing from you office you may have to dial a 9 in order to get an outside line. You will also need to be able to make international calls from whatever line you are using. Some companies block these type of calls or may require you to use a code that ties the call to the user.