Separation of the various layers in the network enables use of separate licensees for each layer. Such a model is used for instance in Malaysia (see box III 18). This may at first glance be seen as a further complication for telecom operators, as they will now need to obtain more licenses than in a situation where the same license applies for all layers. On the other hand such a system enables service provision to be liberalized without loosing control with infrastructure development. Therefore it becomes possible to reduce barriers of entry for actors not engaged in all layers, as requirements for licensees in some areas can be reduced or lifted entirely.