A customer of ours wanted the 4500 series (to replace a faulty unit) and Avaya told him to order the 4800 series instead. They just ordered and received ERS4826GTS switch still with a pre-production load. Of course, they don't want that.
According to the 5.6 documentation, there is also licensing involved. In addition, from what I can tell, he didn't order any licenses. I don't have any sales and design engineering information on the 4800 series and haven't yet had the opportunity to get my hands on them to install. Does anyone know how this switch should have ordered?