Policy map using policy map

I have been given a template configuration for a DSCP based QoS.

So the incoming traffic policy map marks the traffic accordingly, and then the WAN interface calls policy map S-QUEUE to decide how to handle the outbound traffic which in turn calls policy map QUEUE.

policy-map S-QUEUE class class-default shape average 1048000 service-policy QUEUE

policy-map QUEUE class M-QUEUE !dscp ef priority 1032 class I-QUEUE !dscp af31 bandwidth 16 class class-default !the rest fair-queue random-detect dscp-based

Somehow I am stuck trying to figure out why not have the WAN interface use QUEUE instead of using S-QUEUE. The WAN bandwidth is 10Mb.

Geoffrey Sinclair Remove the nb for email.