Using Windows Live Messenger and a compatible headset, you can make free PC-to-PC calls to anyone on your Messenger contact list.
Free phone calls: it shouldn't sound like false advertising, but when it comes to phone calls, a free anything can be hard to come by. Just try making an overseas mobile call if you need any reminder of that. But with Messenger, you can make free phone calls to any other PC equipped with a compatible headset and speakers, as well as an active connection to the internet.
It's incredibly easy, here are the two foolproof steps:
Open a chat window and click call Select Call computer from the menu. Your contact will be sent a call invitation, and their computer will ring.
Start talking! Once your contact accepts your invitation, you’re good to go.
And that's about it, click here to find out about how to set up a video chat in Messenger.