Psn connect with gigacube of vodafone possible?

I would like to know if it is possible to connect the Gigacube with 50gb from vodafone to the psn (ps3). I tried it and there was synonymous with the ps3 Internet connection test that the internet connection was successful but psn and the rest failed. Why is that? Is it not possible with the gigacube to log in to psn?

It worked very easy with us, just as you connect with every other Wi-Fi network. It even works with the mobile phone.