Hi there! By the way, I used Google Translate so that I can understand your issue. I checked the servers of Black Ops 2 today and it's in Defcon 5, you can also check it. here's the link: Call of Duty: Black Ops 2 Status
I was able to check the support site for an article of some steps that you can try so that you can connect with the game server like restarting your router and so on. Here' the link to the article: http://support.activision.com/articles/en_US/FAQ/Problem-Connecting-to-an-Online -Game-for-PlayStation-3/?q=improving+connection&l=en_US&c=Game_Title%3AAll&fs=Se arch&pn=1
I hope this helps. Good luck!