The cisco switch will see multiple VLANs but you will only be able to assign one VLAN / port. Thats how I have seen it work with a HUB anyway.

You could set up a seperate VLAN for your phones the way cisco define it is as a AuxVlan. You configure your switch with it's normal Data VLAN and also configure an auxVlan on the same port. I would use a seperate address space too, and set up a ne...