Vista - phone ringing in on modem like fax

Can someone please help?. My computer will be on, but not online, and my home phone will ring and after the second ring my computer modem starts reacting like a fax modem and starts ringing and then says your call did not go through please try again. What can I do to stop this from happening? My modem is just automatically reacting after the second ring and I don't want this.
I am using Windows Vista Home Premium.

Hello CHickerson,

Welcome to the Vista Forums.

This should be a setting in whatever Fax software you have installed. If you don't have any fax software, then take a look at the properties/settings for your modem.

Hope this helps. Enjoy your stay.
Gary

Hello and thanks for your response. I don't have any fax software installed and vista won't let me change anything in the modems properties. I am using old fashioned dial-up internet and my phone line is hooked from back of pc to phone jack splitter and phone is connected to other port/splitter side.

sorry posted twice

Don't you have 2 telephone jacks on your modem card? One should be for phone line in and the other should be out to the answering machine/telephone. That's how mine is set up. Try that and see if you still have the problem.

Gary

No, I only have one and is states Line imprinted beside it. No chance to mess up plug the wrong spot.