Fwd: HylaFax+ installation on VM, and connect to Elastix(asterisk) lines with it

Hi,

As continue to making my outgoing faxes sent in better quality, I was
suggested to use HylaFax+ (instead of the HylaFax that is installed on my
Elastix setup).

I am willing to keep my current working version of Elastix as is, as I'm
afraid to ruin it (it's a physical machine, so I can't take snapshots of it
and rollback in case of problem).
What I thought is to run a new VM that will be dedicated to HylaFax+ only.
Since I would like to keep using the asterisk pbx as the lines for my fax,
I think I need the IAXModem.

How should I run this setup, so one machine will hold the HylaFax+, the
other will have the "lines" with asterisk, and where should I install the
IAXModem, and how do I configure it with all of this?
I didn't find a complete guide for this kind of setup (only for the same
machine).

I did read that there is something called: termnetd+ttyd, don't know if its
related or not.

Thanks a lot!