\Registry\machine\software\microsoft\fax\Routing Extensions
    Itg Routing Extension
        FriendlyName = Itg Routing Extension
        ImageName = REG_EXPAND_SZ %systemroot%\system32\faxitg.dll
        Routing Methods
            Itg
                Function Name = FaxRouteItg
                Guid = {b1568c8f-cae0-11d0-b225-00c04fb6c2f5}