I just picked up some used phones and their VLAN is set to 401. We use VLAN 0, the phones will not pull a dhcp address because of this and i am unable to program them because the "Press * to program" option doesnt come up. I have tried pressing Mute R E S E T # but it beeps at every key press and wont go into the programming screens. Is there a way to change the VLAN or reset these to factory settings?