Won't work, Windows XP Fax only supports one modem:
http://members.shaw.ca/bsanders/FAQFAX.htm#_Toc88835153
23. What is the limit on the number of fax devices supported on different
Operating Systems?
Hal
--
Hal Hostetler, CPBE -- hhh.DeleteThis@kvoa.com
Senior Engineer/MIS -- MS MVP-Print/Imaging -- WA7BGX
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"Nik" <nospam.DeleteThis@nospam.com> wrote in message
news:18knu3t742mavhmedpq6s74qcchlan21c2@4ax.com...
> Hi all
> we have a program that sends fax printing them on Microsoft fax
> I can't modify anything in this program.
> I was wondering this : it may be possible to mount 4 PCI modems in one
> pc and use them to send faxes? I mean send 4 faxes on 4 lines in the
> same moment.
> Maybe that Microsoft fax itself "choose" which line use.
>
> thanks
> Nik