Thanks to a good friend of mine, I got a Cisco 7960 IP Phone today!
I intend to explore the features of the beast, and maybe try to get it working in combination with the voip thing I get from xs4all. Perhaps toy arround with Asterisk while I am at it.
The only downside to this story is that I still need an adapter for it. This type requires 48V / 50 mA DC input, and that’s one thing my universal adapter can’t provide. (12V max). Oh well, there’s always ebay.