I have solved the integrated fax issue with a multifunction printer. I have 2 offices. One uses a Brother MFC the other uses an HP 8610 officejet. With either you print to the fax, it brings up the software that asks for a telephone number (and if you want a cover and how to fill it out) and once you hit send you hear the printer excrete fax noises about 5 seconds later.
I like the HP better because it catches faxes and automatically downloads them as PDFs to the server. The Brother has clunky software that usually requires manually downloading the files then converting them to PDF with paperport software. Paperport is a good manager for the documents, but for us it's primary purpose is to change from (I think) TIFF format to PDF. It will save that to the server group folder and they then import from there. (OK, I know Updox can automatically imports, but it doesn't take long to import for my office).
In fact, when the HP failed (cartridge not recognized, a common problem) I bought another Brother for that office, thinking that they had updated things from my now probably 8 year old Brother in the other office. When staff complained about the clunkiness, I restarted the HP as a fax machine only. I suppose I could have bought another HP but I had already spent the money on the Brother and it is a good printer too, so it prints and the HP faxes. For more money you could by a fax card, but I really don't see the point.
Anyway, I don't use Updox for faxing, my system works well. Few of my patients use the portal. I use NitroPDF (free version) and attach a scanned signature to sign and markup PDF documents (others here like Foxit, but NitroPDF seems to work better for me). That works 95% of the time. About 5% won't take it and I either wet sign and fax or tell them to mail it and I will sign it.One company didn't like my SIGNED signature, I told them to mail it.
So I don't see fax ability as a limitation of AC.
