Here is how to call Skype contacts from your Windows Phone:
1. Open the Voxofon app
2. Select the first icon in the app bar in Voxofon app
3. Select Skype and enter your recipient's username as the destination
4. Select "Call"
Voxofon will call the nearest access number to reach the VoIP platform, then forward the call to your Skype contact. Please note that this will use your local plan minutes.
Note: When you make a call to Skype via Voxofon, the recipient will see "Voxofon" as the caller. The call will not go through if your contact does not allow calls from user Voxofon.