DSCP and CoS mapping to use uAPSD

Hi CISCO experts, I'm trying to map some traffic to a DSCP and CoS priority. The fact is that doesn't work.
Steps:
1.Set personal filter (myfilter)to forward from specific IP.
2.Set QoS policy: my_policy --> myfilter-CoS (4).
3. Add policy to 802.11g.
When I look up the IP traces DSCP is allways 0x00 (Best Efford).
If I map DSCP (best efford) to DSCP (vocie) doesnt work either.
What can I do? Im trying to emulate AC_VO or AC_VE so I can force the uAPSD protocol to work.
Best regards

Are you using a Cisco WLAN controller or autonomous AP?
You would need to ensure that the RTP (voice) packets to the AP has DSCP = EF.
There is an auto policy in the WLAN controller to map EF to UP6.
For autonomous, will need to create a QoS policy to do this.
But you do not want to map DSCP = 0 to UP6!
This defeats the purpose.
Will only want RTP packets to be marked as EF.
See the WLAN SRND and 7921G Deployment Guides for more info.
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns279/c649/ccmigration_09186a00808d9330.pdf
http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7921g/5_0/english/install/guide/7921dply.pdf

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