Are you opening the fax on your PC or a mobile device. In most cases (if you are on your PC), it will open in a web browser, so you just use the browsers
File > Print options. On most of the new browsers, there is usually an options/settings icon at the top/right corner of the page which is where you will usually find the Print command.
If you are unable to find the print option, let us know how you are opening and viewing the fax.