The veneer slot information of the VP9660 is shown in the following:

Which of the following actions will prevent users from dialing the MCU's IVR number from the terminal to create a meeting?
The sound test is to test whether the terminal audio output is correct.
NLOG supports viewing historical network data for event venues within the conference ().
The gatekeeper rejects the access authentication, address resolution request, and gives the resolution result, which of the following signaling can achieve this function