Do you want to configure the switch port for both IP telephone and computer (computer connected through the telephone)? If so, here is the config we use:
interface x
tagged vlan <voice vlan id>
untagged vlan <lan vlan id>
spanning-tree admin-edge-port
We don't use QoS in our switch setup, so can't help you with that.
Please make sure that you have upgraded your 2530 switches to the latest software version. In earlier versions this configuration caused trouble with interface resets every 15 minutes or so.