When asking what kind of bike is this include as many detail pictures of the frame set. Including components is of little value since components can be bolted onto just about anything. Pictures required include rear drops, seat stay brace, seat and head tube lugs, fork crown, bottom bracket and the like. Also, seat tube diameter is a help. All that said...

My guess is that you have an eighties something Vitus 979. I compared your pictures as best I could to my own Vitus and the similarities are many.