Cisco 7925G Deployment Manual page 53

After enabling Call Admission Control, the following configuration should be enabled, which can be displayed in the "show
run-config".
Call Admision Control (CAC) configuration
Voice AC - Admission control (ACM)............ Enabled
Voice max RF bandwidth........................ 75
Voice reserved roaming bandwidth.............. 6
Voice load-based CAC mode..................... Enabled
Voice tspec inactivity timeout................ Disabled
Video AC - Admission control (ACM)............ Disabled
Voice Stream-Size............................. 84000
Voice Max-Streams............................. 2
Video max RF bandwidth........................ 25
Video reserved roaming bandwidth.............. 6
The voice stream-size and voice max-streams values can be adjusted as necessary by using the following command.
config 802.11a cac voice stream-size 84000 max-streams 2
Ensure QoS is setup correctly under the WLAN / SSID configuration, which can be displayed via "show wlan <WLAN id>".
Quality of Service............................... Platinum (voice)
WMM.............................................. Allowed
Cisco Unified Wireless IP Phone 7925G Deployment Guide 53