gratis 5 minuten gesprek met XO (alleen USA)

You get a free 5 min call for free by following this link:

http://www.xo.com/forms/Campaign/ExternalSales/VoIP/VoIPDemo/VoipDemo.aspx

Call are only valid within the us. Using Ipkall (http://www.ipkall.com/) or many other options, you can call the US for free.

Good Luck