Q:  Where are incoming faxes written as they come in? Where are outgoing faxes written while they are being transmitted? 

A:  Incoming faxes are written to /usr/spool/NeXTFaxes/{fax_modem_name}.
Faxes being sent are created in /usr/spool/NeXT/{fax_modem_name}.   

QA749

Valid for 2.0, 3.0, 3.1