Radius Server VLAN assignment

Hello,

I`ve setup a .1x authentication with MAB for phones. I`ve wanted to test what happens if someone uses the mac address from the phones and connects to some port in the office. I thought he will put in the VOICE vlan which I added in the network policy, but instead he receives both vlans and gets an address from DHCP. The port is configured with access and voice vlan.

The test notebook I'm using has an address from the phone and will receive both vlans. Why?

Vlan Mac Address Type Ports

---- ----------- -------- -----

255 xxxx.xxxx.xxxx STATIC Gi1/0/35

5 xxxx.xxxx.xxxx STATIC Gi1/0/35