Reviewing the technical details for this product, I don't see that it supports Class 1, 2, 2.0 or 2.1 industry standard faxing protocols. If that's the case, then it won't work with our faxing components.
In the past, I've noted that some of our customers do use the Fritz card successfully but I'm hesitant to say we support it 100% if I don't see proof that they utilize Class 1, 2, 2.0 or 2.1 protocols.
You can always email their support staff and find out if they do indeed support the industry standards noted above. If you do, please let me know what you find out.