Oops, that's local configuration that we shouldn't have let slip out.
The directory /sys/lib/fax and the command /rc/bin/fax are full of
local refrences.

This needs a manual.  The machine that has the modem attached should
be running a telco with the appropriate dev in the command line.  For
example, out system dinar has the following in it's cpurc:

telco -vs 19200 /dev/eia011 &				# FAX

Then you should have a cron entry that kicks it ever now and then
just like for mail.  For example, we have in /cron/upas/cron:

5,15,25,35,45,55 * * * *	dinar		/sys/lib/fax/faxtickle

Now edit /rc/bin/fax and everything in /sys/lib/fax to reflect
your local environment.  Basicly change everything that mentions
emelie into a pointer to your file server.

If you only have one system, then just remove from /rc/bin/fax the
line:
	rx dinar /sys/lib/fax/faxgoose
with
	upas/runq -t3 /mail/faxoutqueue /sys/lib/fax/faxtry < /dev/null > /dev/null >[2=1] &

A bit of a pain all around.  We never got around to making this generic and
it fell through the cracks in the release.  This is part of why releases are
hard.  We (i.e. Rob) usually have to go over the system with a fine tooth
comb to comb out all this local lice.