I just wanted to verify I'm actually understanding some concepts here. A while back I posted about QoS for our Voice VLAN and it was suggested that I need to consider the Wired QoS Protocol support inside of the QoS Profile for the Platinum profile. I have since read a document that says this setting is actually obsolete (http://www.ascomwireless.com/pdf/guide/vowifi/cisco_wlc_infrastructure_cn_92433gb.pdf) and I found this in the Voice over WIreless LAN 4.1 Design Guide:
WMM-enabled clients have the classification of their frames mapped to a corresponding DSCP
classification for LWAPP packets to the WLC. This mapping follows the standard IEEE
CoS-to-DSCP mapping, with the exception of the changes necessary for QoS baseline compliance.
This DSCP value is translated at the WLC to a CoS value on IEEE 802.1Q frames leaving the WLC
So I want to verify my understanding. We will be leveraging 7925 which will use WMM. Wouldn't the phone itself hande setting the QoS flag on the frames, and then in return wouldn't the WLC use whatever the appropriate QoS was back? This of course presumes the switch ports to the APs trust DSCP and then trust CoS coming from the WLC. Thank you to anyone who can help me make sure I understand this.