VOIP Newbie & NoName :
Ive done this for a few clients using QTelNet FXO-1301 and an FXS-1301. The equipment top notch in my mind .. good support as well.
NoName mentioned you need a static IP, this is untrue with QTelNet’s equipment. You can use static, DHCP or Nat’d addressing. The software does all the translation for you.
Let me know if you ahve any questions.