What are three functions provided by a switching system in a traditional telephony network?
(Choose three.)
A.
Call setup
B.
Call supervision
C.
Quality of service
D.
Codec processing
E.
Voice compression
F.
Customer IDs and telephone numbers
What are three functions provided by a switching system in a traditional telephony network?
What are three functions provided by a switching system in a traditional telephony network?
(Choose three.)