Well the time has come to decommission it. Of course open source alternative can be found in Hylafax.
I've built my test server on a Gentoo distribution (2.6.8 kernel) on a Eversham Voyager, Celeron 800Mhz & 128Mb Memory. Modem is a 3Com Courier V.Everything 56K.
Will do the move over Christmas, pending a security risk assessment.
Expect the micro "how-to" section soon.