In the registration signaling process, the terminal initiates to GK which of the following messages represents a registration request ( ).

RRJ sendto [ ( 218.5.64.98:18616 )] [5928509444] [[0x00000065:err reg wrong account or passwork]] From the above logs, you can tell that the reason for the failure of registration is ( ).

When scheduling the meeting, the " IP port resources are insufficient " , and the check MCU corresponds to be online, and the number of 1P ports is sufficient. What could be wrong? ( )

There are several ways to join an IVR meeting at a venue ( ).

Network recording supports downloading the recording file to the local area in ( ) format, and supports local playback.

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.

In the process of processing the video signal of the video terminal, the chip is responsible for encoding and compression . (Please fill in the English abbreviations).

The video signal starts from the input terminal equipment, is sent to the network after encoding and compression, and finally displays, and has gone through many image processing links in the middle, mainly including: IP camera signal acquisition, pre-processing, compression encoding, data packaging and transmission, decoding, image format changes, playback.

The feed can only be displayed on the same monitor as the mainstream, not independently.

In the H460 network, the transmission keep-alive duration, keep-alive port, and keep-alive fields are in the signaling transmission stage. ()

Which of the following descriptions of the SIP protocol is correct?

Enabling SEC, the system can automatically adjust the network transmission and different error corrections of AV processing for the rich QOS mode of the IP network After enabling SEC, the anti-packet loss ability has been greatly improved ()

Jitter Buffer calculates network latency based on the transmission and reception time of messages, statistically averages the changes in message delays, predicts network jitter based on historical statistical results to track network conditions, and uses the minimum delay to achieve the goal of eliminating jitter Target.

In the hierarchical relationship of SIP structure, what are the following main items of the request message?

mode, communication between public and private network devices is supported, and data does not need to go through a firewall.