Jorgen

If something is wirelevel, it refers to how data is represented during transfer within your network context. I've seen SSL included in this category, as it's just a way of making the data not being readable between the two ends of the wire, but is independant of the data sent...

I can't find much use of the term on the web, but I would say that it's stuff that fits between the application layer and the network layer of the Open Systems Interface model... In the session layer, maybe.

I'd be interested if you see it used differently.