A.Yes，by modifying the LWAPP frame header DSCP value in transit.
B.Yes，by modifying the LWAPP frame header 802.1p value in transit.
C.No，the WMM queue classification parameter is transported inside the LWAPP tunnel.
D.No，the WMM queue classification parameter is determined at the AP based on the original client IP  header DSCP value.

A.Voice traffic should be marked to DSCP EF per the QoS baseline and RFC3246.
B.Voice traffic loss should be no more than 3%.
C.One-way latency （mouth-to-ear） should be less than 150 msec.
D.Average one way jitter should be targeted to less than 30 msec.
E.21-320 Kbps of guaranteed priority bandwidth is required per call depending on sample rate，codec，and  layer 2 overhead.