Hi Michael,
thanks for your help.
I've got the answer for the other controllers. The RFS 4000 is able to manage 200 simultaneous hotspot users, RFS6000 400 users and RFS 7000 4000 users. RFS 4000 Radius User Capacity is 256 users, RFS 6000 500 users and RFS7000 5000 users.
I want to offer my clientele (hospitality, education etc.) a solution from a single source, therefore the external RADIUS opportunity is of no interest.
Regards,
Schrein