You need to access the website you have linked to and click on the Documents tab. Scroll down a little and then download the Configuration guide for OSN 500. I can't access the documents to provide the required information because the downloads are available only for customers.
Official page: http://www.thunder-link.com/HUAWEI-OPTIX-OSN500_p184.html
Note: Make sure you have a compatible PDF reader installed in your computer.