Ok Wera two way's to use it, they have two types newer and older, I would get the newer one you plug it in too your laptop usb port and use your computer to talk and listen or plug a phone into it works anywhere that has wifi, rings too.. If you use a modem at home it plugs right into that and from there to phone or fax! You can also buy time to make international calls and apply those to any phone or cell, guau is that great huh! When you use it with the laptop a screen appears with all your contacts Like I said works anywhere that has wifi. Hey hows my Spanish on your blog, you know I do read it. One more thing when its hooked up to the modem it is always on like a regular phone. You can get a 1 800 number or any number or area code you want like huerita you know the numbers that match the letters.