Summary:
The FAXstf fax software, installed in some Macintosh configurations, is not picking up the phone line, so faxes cannot be received.

Issue:
Occasionally, the modem goes into data mode instead of the idle (fax) mode. When this happens, the modem no longer answers an incoming fax call.

To check what mode the modem is in:

1. Select "Fax Status" in the Apple Menu.
A window is displayed with a Macintosh icon on the right side. Below the Macintosh icon is text that states "Data Mode" or "Idle".
2. On the right side of the window a Macintosh icon is displayed with text below reading "Data Mode" or "Idle". If it is set to Data mode you must reset the FAXstf Answer On settings.

1. Open the FAXstf folder.
2. Open Fax Settings (older versions) or
Open Fax Browser (later versions)
3. Choose settings from the Edit menu.
4. Choose Fax Modem.
5. In the "Answer On" option change it to "Never".
6. Click Done.
7. Reopen the settings and change the "Answer On" selection back to one, two, or more rings (your preference).