What can call oversubscription cause if you do not have call admission control?
A.
Echo
B.
Call drop
C.
Talk back
D.
Voice packet loss
E.
Call processing delay
Explanation:
An additional contributor to packet loss in campus networks is TX buffer congestion. Transmit buffer congestion can happen if a rate change occurs or if many interfaces are aggregated into a single uplink, resulting in an oversubscription of the uplink’s capacity to buffer packets.
Page 3-2, Cisco AVVID Network Infrastructure Enterprise Quality of Service Design