On Tue, 2012-01-31 at 14:01 -0500, James B. Byrne wrote: > CentOS-6.2 > > We have a dedicated CentOS-5.7 host used for fax reception > and transmission that we wish to move to a CentOS-6.2 > virtual guest instance. The CentOS-6.2 virtual host has a > 4-port serial card installed. Consider replacing your multi-serial port card with a VoIP analog gateway and use a pre-rolled Asterisk with virtual faxmodems, like Elastix. Just make sure your codec is high enough quality. We used to receive faxes using a dedicated Linux box with a Comtrol Rocketport and an USRobotics MP8. We Converted to SIP trunks and managed to get our faxes in the SIP trunks, as well. This will remove the PCI pass-through from the equation.