Can someone put this into plain english for me?
mls qos map policed-dscp 0 24 to 8
mls qos map cos-dscp 0 8 16 26 32 46 48 56
This is the untrusted scavanger model as discussed in the QoS SRND. Basically it allows only 128 kbps for voice traffic (RTP) per switchport, which is perfect unless you are using Barge feature, as G711 codec will never use this much badnwidth anyway, so the idea here is to protect the network from possible worms, etc simulating voice traffic. Anything above 128 K will be dropped, similarly with the signaling traffic, IPCC desktop, etc where exceeding traffic will be re-marked to the DSCP 8 value. Then on your WAN interfaces you probably have a policy that (LLQ) that matches traffic with dscp of 8 and gives it very small bucket, so that it does not starve out other traffic crossing the link.
HTH, please rate all useful posts!