Calling Card Dialing Rules with Fax

When I send a fax, using Win XP Pro, the fax wizard does not use my calling
card rules. It just uses the fax number, which I have defined in canonical
form in Outlook Contacts.

I have checked for advice in the Knowledge Base but find nothing that works
- the articles mostly seems quite old. Going into Admin Tools / Services /
Fax / Logon etc caused the fax to stop working and give ewrror messages.

I am able to force the fax to send using my calling card by entering all the
digits in the fax number box, eg from the hotel where I am now I have to dial:

9, 1234, 12345678, 1234, 1, 441234567890# which represents
outside line, calling card access no, account no, PIN, option, fax number.

This is pretty cumbersome and a bit hit and miss, and I cannot find a way to
make the fax use the calling card rules and a fax number taken from Outlook
contact.

Any suggestions?!

Many thanks

Paul WW