The Remote AP is just a software key that is entered in the controller to unlock the functionality. True that the AP does not have to be reconfigured and policies can be changed on the fly without rebooting the SOHO device. Devices like scanners and VOIP phones can be profiled so that they can only pass VOIP or scanner traffic to the hosts that they are supposed to. At my company, they connect a Cisco wired VOIP phone with a computer connected to the back of that to an Aruba remote AP, and that is their SOHO solution. The phone is connected to the AP, which is a trunk. Phone traffic ends up on one VLAN back at home base and the PC at the back of the phone ends up on another VLAN at home base, with the Cisco phone doing the trunking. We use this solution for business continuity, where certain employees cannot get to work.
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