You have recently added Cisco Unified Wireless IP Phones 7921G and 7925G to your branch office. The new wireless and wired IP phones are experiencing poor call quality when receiving calls across the IP WAN from the remote HQ. What is the most likely issue?
A. The Cisco Unified Communications Manager bandwidth for the IP WAN link is not properly configured and is allowing more calls than the link can accommodate.
B. The Cisco Unified Communications Manager bandwidth settings have not been increased to support the new wireless IP phones.
C. The Cisco Unified Communications Manager bandwidth is set too low, resulting in poor call quality.
D. The Cisco Unified Communications Manager gatekeeper-controlled CAC has been set too low, resulting in poor call quality.
