Probably not. 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 cable modems or DSL lines. With some DSL
connections you can obtain a DSL line filter suitable for connecting a
standard analog voice line to the DSL line and can then connect an analog
fax modem to that line.

Hi,

Your question is a kind of FAQ.

Sending a fax by DSL requires one of two methods:

1. You obtain a DSL line filter suitable for connecting a standard voice
telephone to the DSL line, then connect a regular analog fax modem to the
line through the line filter.  Your DSL provider has these filters, as does
your local Radio Shack store:

http://www.radioshack.com/category.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%
5F004%5F004%5F002%5F000&Page=1&find=dsl%20filter(keyword)

2. You hire an Internet E-faxing service:

http://www.slipstick.com/addins/services/fax.htm#internetfax
Personal Fax Services - Internet Fax
http://www.savetz.com/fax/
FAQ: How can I send a fax from the Internet?