Question : VoIP Prioritization over Cisco Hardware

We have about 40 IP phones (Mitel) at 3 separate locations; all locations are connected via fiber at 2Mbps.

Each site has it's own Mitel 3300 ICP, so only internal calls between locations and forwarded calls are going over the fiber connection.

We need to be able to prioritize the VoIP traffic, and I'm curious the best way of going about this.

We utilize Cisco Catalyst 2960's and 2955's at all locations. We also have a Cisco ASA 5510 Security Plus that acts as a router on a stick for routing all of our vlans. I know that there is a VoIP prioritization within these switches, but the way it's worded it sounds like it is for Cisco IP phones only. Is this correct, or can I use these switches to prioritize the traffic of the Mitel phones?  

If I can use these switches to prioritize the traffic for the IP phones, a guide would be very helpful to make sure I cover all the ends.

Answer : VoIP Prioritization over Cisco Hardware

The command
macro global apply cisco-global
is a global command and should be put on all switches.  This does not go on the interface.
The other commands look good.  You can actually just leave off the $voice_vlan reference on that one command.

And yes you could can set the CoS and DSCP to match cisco and you would be in great shape.