I was configuring NAC. I've noticed when I plug IP phone to the switch managed by NAC, IP phone register to the callmanager without to creating filter on NAC. On switch port, voice vlan has been assigned and IP phone has been registered without any problem.
Do I still need to setup filter for IP phones or leave it as is?
why Cisco mentions in documents to create filter for IP phones even though it's registered to Callmanager without filter?
any suggestion would be very appreciated.