The official blog for Windows Server Essentials and Small Business Server support and product group communications.
...It's old technology. When it breaks, it's hard to troubleshoot (hint - it's the hardware). When it works perfectly, nobody thanks you. If it's not set up correctly, the entire office will let you know. That's why you need this guide:
The document is what it says it is - a step-by-step walkthrough for setting up and configuring fax on your SBS server.