19.5. Incoming Fax Handling

Received faxes are commonly encoded in Tagged Image File Format (TIFF). This graphics file format, while not as well known as JPEG or GIF, is not as obscure as one might think. In fact, we suspect your computer (whether you’re running Windows, Linux, or MacOS) will already have the ability to interpret TIFF files built in. While it has become popular to offer PDF as a delivery format for received faxes, we’re not sure this is strictly required, since TIFF is so ubiquitous.

Received faxes will be stored by Asterisk as files. Where those files are stored will depend on several factors, including: