Using the Modular QoS CLI you can configure QoS for VoIP by configuring a class-map to classify traffic based on various match criteria and a policy-map command to determine what needs to happen to each class. You then apply the policy to incoming or outgoing traffic on an interface by issuing the service-policy command.
Whats happening above is that you're matching traffic with DSCP EF (Voice RTP traffic) and your DSCP cs3 (Voice signalling traffic) in your class-map.
In your policy map you're then giving each traffic type a certain priority.
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...