http://www.voipstunt.com/en/directcall.html

Direct Callback
You can choose to make your Voip Stunt calls via your regular phone with the Direct Callback feature. Just enter your home or mobile phone number in the Direct Callback field of the application. You can now decide with each call if you want to place it via the application OR take your call on your regular phone.

With the Direct Callback feature checked, the application will first dial your regular phone number. As soon as you have picked it up, a connection with the number you want to call will be made. The big advantage is that you can make your cheap Voip Stunt calls on your normal phone.

Costs for calling your phone number and the destination number are settled via your Voip Stunt account. You pay the regular Voip Stunt rates as advertised on this website.

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I updated my Voipstunt, and found a new service added. Basically add the number where you are and then dial the number you want, and for €0.03 , plus any relevant call charges, you're connected.
Just made a call to the bird in Hungary on her landline. Voipstunt is free to UK & Hungary landlines. I had €10 credit, made the call, had a really clear conversation which seemed better than pc to phone, ended the call and checked my balance. €9.97.
At todays rates 0.03 Euro  = 0.0205929 GBP.
So I can now chat directly abroad for a little over 2p for up to 1 hour.
Just thought I'd let you know

Can't find the reason why either, but I know that when you use the actual software to place the call, it shows that you will be charged the 3c.
Also they have changed their allowance again. It is now 300 free mins calculated over a seven day period. NOT weekly or a set 7 days.
So if on day 1 you use 1 min, and on day 7 you use 299 min, you cannot now use the free mins for a further 6 days. ALL mins will now be charges at 1c per min.
Still, 6 hours over any week is good.

********EDITED*********

OK, I knew I saw it somewhere. It is on the page used to place the call
Not giving the page address because I had to log in first.

Make a call! (connection fee 3Ct.)   
  Your phone number: 
 
(Imagine there's a box  here)

Destination phone number: 
 
(And another box)
Make sure you enter both phone numbers in the international format, for instance for calls to UK phones: 00442012345678


................................................................................
.
They also offer the facility to send international SMS

Send a text-message (SMS)   
    Enter your text message here (max. 160 characters):

  (Reasonably sized box)

Enter the mobile phone number you want to text:
(They love their boxes)
Enter mobile phone number in the international format (for instance, a UK mobile: 0044 77 xx)
 
At this moment you can only send a text message to country codes starting with +1, +3 and +4. Sending a text-message costs 5Ct. and will be settled via your Voip Stunt account.

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It is worth pointing out that the third call made after breaking the news unfortunately suffered some of the problems that we come to recognise with voip, including the "underwater" conversation. So perhaps this new service is not as brilliant as I thoought.
However, one advantage is that you could connect your distant cousins to their further placed friends and relatives at a minor cost, from the comfort of your own home.
Your father's wartime friend has been found in America? No problem, connect the 2 and surprise him!