  We address the following criterion for quantifying the quantum information
resources: classically simulable {\it vs.} classically non-simulable
information processing. This approach gives rise to existence of a deeper level
of quantum information processing--which we refer to as "quantum communication
channel". We particularly show, that following the recipes of the standard
theory of entanglement measures does not necessarily give rise to un-locking
the quantum communication channel, which is naturally quantified by Bell
inequalities.
