what causes poor voice quality and video pixelization in a video call?

what causes poor voice quality and video pixelization in a video call?
A . Cisco Unified Communications Manager is configured to use
B . 711 instead
C . 729.
D . 1 Gbps network ports are used instead of 100 Mbps network ports.
E . The QoS is configured incorrectly.
F . A firewall is blocking the RTP ports.

View Answer

Answer: C