Yes you'll to plug a land line into the modem. It also requires some type of fax software. If your running Windows XP, it's built in.
I have a generic 56 hcf fax modem installed on my computer. I want to be able to send faxes. Should I just be able to plug a phone into the computer and will I then be able to send faxes? I used to use this modem to get onto the internet, but now use internet cable. I just don't understand how this works. Thanks