To media exchange layer, which of the following statement is correct? (Please choose 2 answers)
A) It takes charge of Video switching, Audio mixing, Data processing, Terminal Access, Signaling exchange and so on.
B) It is made up by the MCU and voice gateways.
C) It achieves uses' interaction between the video systems.
D) It is responsible for call processing, signal processing and QoS policy control and so on.
Correct Answer:
Verified
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