NEW QUESTION 329
Accept the message sent by the terminal to the gatekeeper about the gateway request to deregister registration, which of the following signaling can achieve this function

NEW QUESTION 330
After the terminal enables the NAT setting, it can change the content of the packet message, which mode can be used for NAT networking to achieve public and private network communication

NEW QUESTION 331
Common SIP calls the SDP negotiation process includes (). (3 answers).

NEW QUESTION 332
At the UDP layer, H.323 protocols fall into three broad categories, where the functions of the terminal control class are not included. ( )

NEW QUESTION 333
Cascade channel usage rules are consumed by priority, and resources are mutually exclusive when at the same priority.

NEW QUESTION 334
Header domains carry the properties of SIP entities, message bodies, and so on.

NEW QUESTION 335
According to the H.323 protocol, a message sent by the caller to the caller indicates which message ( ) the called user has off-hooked.

NEW QUESTION 336
How often does the terminal default interval report packet loss to the MCU?

NEW QUESTION 337
The protocol that can implement video codec is ( ).

NEW QUESTION 338
Due to the size of the display and the resource limitations of the MCU , the number of multi-screen sprites generally does not exceed 24 , otherwise the image is too small and the picture will not be clear.

NEW QUESTION 339
On the terminal web page, you can set parameters for subtitles, which include banners, middle captions, and instant messages. Banners and middle captions can be displayed separately or at the same time; Instant messages can be sent to peer-to-peer private chat, broadcast and sent, or sent at a designated venue.

NEW QUESTION 340
In multi-channel cascading, two MCUs in a conference support up to ( ) cascaded channels

NEW QUESTION 341
In the process of the MCU main control board main standby reversal, the conference and venue status on the SMC will be offline for about 10 seconds.

NEW QUESTION 342
defines the load head RTP load head structure for the A/B/C3 mode as ( ) mode.

NEW QUESTION 343
The feed can be either the active image or the contents of the computer desktop. ( )

NEW QUESTION 344
People convert the corresponding mechanical vibrations of sound into electrical signals, which are collectively referred to as audio signals.

NEW QUESTION 345
Desktop tones can be taken as skin color adjacent to color or gray, avoiding the same color of skin tone; Desktop reflectance should be higher than skin tone, highlighting the skin image.