I am planning a 7900 series deployment in a non-Cisco switching environment. My question is, how do the phones know which VLAN to use? I am assuming that in a Cisco environment the command "switchport voice VLAN x" identifies the VLAN to be used for voice on the switch. Then when the phones boot maybe they do some CDP stuff to figure out what VLAN to use. What happens when there is no CDP? Do I need to pre-configure the phones for the voice VLAN? Can I work it backwards and setup the non-Cisco switch voice VLAN to coincide with the default VLAN on the phones? Any and all suggestions would be greatly appreciated.