Remote branch offices with Cisco IP Phones have just been implemented across a 2 Mb/s WAN link from your existing Cisco Unified Communications Manager cluster in headquarters. The WAN links are heavily utilized for data traffic. Users from the branch office report poor audio quality when they call the headquarters.
Which approach can you implement to directly improve audio quality in this scenario?
A. Implement LLQ.
B. Implement CBWFQ.
C. Implement weighted random early detection.
D. Implement TCP header compression.
