You are working as a Voice Administrator in a company that is facing the problems of jitter, delay, and packet loss in its VoIP network. You want to fix all these issues. Which of the following is the most likely reason for these issues?
A.
There is lack of bandwidth.
B.
Voice VLAN is not configured.
C.
An audio codec is wrongly configured.
D.
The company and the service provider are located far from each other.