Is there someone who know if we can use a Fax T0 BRI card on VMWare VSphere 4.1?
The manufacturer and price doesn't matter for informations.
I don't think either hypervisor (ESX/ESXi) supports BRI or BRI fax cards. This is confirmed by the VM Community here and on the Vmware (I/O) compatibility guide. I would try a serial attached solution if an IP based fax option is less desirable.