I run a small business and I am attempting to build a phone system with 3CX. I played around with the free version to get a feel for the software on a laptop that has a built in analog modem. I am looking at switching over to a desktop terminal with a paid version. My phone lines in my office are analog lines. Is there a way to utilize my analog lines (3) without using a seperate piece of hardware? Maybe PCI modems or another type of PCI device? I originally found out about the 3CX software from http://www.usedphones.com. They have a picture of a packaged system that does not show an additional piece of equipment - I figured they had internal hardware that your analog lines would simply plug into. Thanks in advance.