VoIP traffic prioritisation options on procurve 2520

[oliverm]

What are the various voip traffic prioritisations available on a 2520?

Ones that I know about are;

Port prioritisation - If we attach the phone to one port and the pc to another port we can prioritise one over the other. 

VLAN prioritisation - If we attach the phone and the pc to the same port we configure the phone and PC on separate VLANS and prioritise based on that. 

DSCP prioritisation - We can tag the traffic coming from the phones with a given DSCP queue ID and prioritise on that. 

Any others? 

Olly