Fax and ISDN modem

The built in fax in Win XP Pro doesn't seem to recognise
my Billion ISDN PCI Card as a modem. Do anyone know if
this might be a driver problem, or doesn't Win XP Pro
recognise ISDN (which is the most common telephone
standard in Norway where I live) as a telephone standard?

Many users don't realize that faxing is a function that can only use analog
phone lines and analog fax modems. Accordingly, no fax software will
function with digital or DSL lines. With some ISDN lines you can isolate the
voice/analog line and hook that directly to your analog modem or obtain a
line filter suitable for connecting a standard analog voice line then
connect an analog fax modem to that line.


--
Russ Valentine
[MVP-Outlook]
"Stein Erik Paulsen" <ser-paul@online.no> wrote in message
news:28c001c33f4c$bb6a8310$a601280a@phx.gbl...
> The built in fax in Win XP Pro doesn't seem to recognise
> my Billion ISDN PCI Card as a modem. Do anyone know if
> this might be a driver problem, or doesn't Win XP Pro
> recognise ISDN (which is the most common telephone
> standard in Norway where I live) as a telephone standard?

"Russ Valentine [MVP-Outlook]" <russval@mvps.org> wrote in message
news:eudufN1PDHA.1720@TK2MSFTNGP11.phx.gbl...
> Many users don't realize that faxing is a function that can only use
analog
> phone lines and analog fax modems.

....or G3 analog fax emulation over ISDN - such as provided with most, if not
all, commercially available ISDN TAs. Pop over here
http://www.billion.com/communication/communication.html and you should find
suitable software/drivers for your TA
Oh - BTW, there is also G4 Fax, which is explicitly an ISDN fax standard


> With some ISDN lines you can isolate the
> voice/analog line and hook that directly to your analog modem or obtain a
> line filter suitable for connecting a standard analog voice line then
> connect an analog fax modem to that line.

Er..I think you are confusing ISDN with ADSL. Pretty much all voice and fax
traffic has been carried over ISDN for the past 20 years - it is just that
the local access (or subscriber line) is analog - with the D/A conversion
taking place at the local exchange.

The solutions you are referring to apply to ADSL - there is no analog
carrier in an ISDN line, so there is nothing to isolate or filter.

Don't be sorry. I asked for the clarification since I had misread the
initial post and was posting the answer for DSL lines. I rather suspect,
though, that most users still can't fax over ISDN using Win XP Fax even if,
in theory, they should be able to. Then again, Win XP Fax can't use a lot of
standard analog fax modems either.
--
Russ Valentine
[MVP-Outlook]
"Groundhog" <nospam@privacy.net> wrote in message
news:bdrip8$vvp7t$1@ID-198354.news.dfncis.de...
>
>
> "Russ Valentine [MVP-Outlook]" <russval@mvps.org> wrote in message
> news:%23P0qtO3PDHA.1072@TK2MSFTNGP10.phx.gbl...
> > Thanks for the clarification, I think. So if there is no analog carrier
on
> > an ISDN line, why would anyone expect it to work for faxing?
> > --
>
> Because the Terminal Adapter (TA) in the PC provides the analog-digital
> conversion, creating the 64k/sec signal, which on an old POTS (analog)
line
> would have taken place at the local exchange. An ISDN line has two 64k
and
> one 16k channel - and is exclusively digital.
>
> Take a look here http://www.isdnshop.com/isdn-basics.html for a better
> explanation than I can give ;-)
>
> Windows XP's Fax Service is a bit funny about emulated modems with ISDN,
> using TAPI - but there are plenty of pieces of software/shareware which
will
> do the job admirably.
>
> Sorry to pull you up over this, Russ, but I've seen the "cannot fax over
> ISDN" statement several times in this NG - and it is inaccurate. For sure
> though, with ADSL or Cable, you do need a separate analog modem (unless
you
> use a fax over internet service).
>
> Happy to help :-)
>
>