The FO-4400 is an incredible fax with endless amount of functions. It is ITU-TG3 compatible. Some of its qualities are a half-duplex desktop transceiver configuration and a 2MB memory producing approximately 225 pages. It also includes a 1.3 seconds per page scanner, allowing a shorter time to finish work. And a 12 pages per minute printer, to complete a dazzling machine, which will allow you to save time every time you use it.