Can I make a prepaid Skypeout call to a GSM mobile phone on Yesss network in Austria
 

My relatives use this Yesss network and I want to call them using Skype from my pc but skype support does not specifically state that they can connect to a yesss mobile phone in Austria

what should be the reason of skype on not letting you call an austrian mobile phone? I would say to 99,9% that this will work without problems. However the skypeout rates are quite high compared to other VoIP services on the internet...

Yesss, btw, is just a MVNO on the Orange Austria network. But as dg7feq noted there are indeed far cheaper VoIP services offering calls to Austrian mobile phones starting from € 0.01/min - for a tariff comparison of some VoIP brands of an Luxembourgian company called Dellmont (formerly Betamax) which many of us have been using for years visit betamax price comparison.

Thanks for your replies.
In 2010 I did not have Skype, when I needed to call my relatives I just used a calling card, which worked to Austrian landlines ok, but
it did not work to the Yesss mobile network.
Now I have Skype, which I've used to video call friends and relatives in Austria, but I have not used
Skypeout yet, and I have not yet paid for any Skype credit.
That's why I wanted to confirm that Skypeout can connect to the Yesss mobile network, before I pay for Skype credit.