问题:
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.
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