Question 26
Incorrect description about recording server (CR101/CR102 ) is ( ).
Question 27
Fe and GEO, GE1 IP addresses can not be in the same network segment, otherwise it will cause network failure, at this time the front panel ALM light is always on. ( )
Question 28
What are the following message interactions included in the process of a terminal calling by number using the H.323 protocol?
Question 29
Video conferencing requires a color rendering index greater than ( ) for light sources
Question 30
More than 20% of the information that humans get from the outside world comes from hearing, and the sound that the human ear can perceive is a mechanical vibration wave, and the sound wave frequency is between which of the following ranges?