The email that will arrive shortly will contain brief instructions about how to make long-distance phone calls. There you’ll also find several local access numbers that you need to call from the phone you typed during the registration process.
The second nice feature offered by the service is the ability to use a SIP client to do the calls. All you have to do is to set up your preferred soft/hard phone (take a look here for a short review of two good and free SIP soft phones that you can use with this service) using this information:
User: [your phone number from the registration form]
Pass: [your password]
Although the website and received emails lack the professional aspect, the voice service seems to work. In the end it’s a good deal for a free service.