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In the Cseq header domain, Cseq is used to uniquely identify an invitation or a registration. ( )
TCSA refers to the capability exchange success response, which is used to return to the local side after the ability exchange is successful.
Extended request message UPDATE , which is used to modify session properties during the call setup phase. ( )
In an RTP packet, the initial value of the Sequence number is random, no RTP packet is sent, and the sequence number is incremented. The receiver detects packet loss and rebuilds packets based on it.
H.323 gateway refers to a node that provides real-time two-way traffic between the H.323 terminal on the SCN and other nodes on the PBN.
Banners are used to briefly display meeting content, and subtitles are used to highlight the meeting topic.
Where the illumination is not enough, the image noise is low, and the image is dark.
For the SDP protocol, line c contains information about the connection established for a multimedia session, which indicates the IP address used by the real media stream . ( )
Voice enhancement technology, automatic noise suppression ANR can solve the problem of the overall low or high call volume in the line.
A multi-screen conference needs to occupy the MCU one-way multi-screen encoding resources, and N sprites need N/2 multi-screen decoding resources.
In video conferencing, the empty field noise is required not to be greater than ( )dB. (Fill in the blanks)
In logical SIP entities, UAS is used to initiate SIP requests and UAC is used to return SIP responses.
In the MCU's web page, the format of the exported address book information is ( ). (Fill in the blanks)
At the heart of the NAT mapping is the modification of the destination address of the datagram header. ( )
When forgotten HD end user and password can not log in to the web interface, can only restore factory settings.
When the MCU is operating in wall riding mode, GE0 and GE1 must be in two different network segments, and all board GE0 (or GE1) must be in the same network segment.
Color temperature represents the most general indicator of the spectral quality of a light source in lux (Lux , lx ). ( )
WEB When managing must, in the Export item under the device management interface, the following cannot be exported. ( )
Under static NAT networking, the signaling description of the public network terminal called the private network terminal is correctly (). (3 answers).
Forward error correction FEC, when both parties establish a call and detect more than 0.1% of the media stream loss within 10s, the super error correction function is enabled , super loan correction
function, will be a part of the call bandwidth, used to transmit anti-packet loss of redundant code stream. ( )
Cascade channels are used by priority, and resources are mutually exclusive when at the same priority.
Fe and GE0, 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.
Call acceptance, which is used by the terminal to request the validity certificate of the call from GK and the address and bandwidth information of the caller. ( )
Call process signaling CALL PROCEEDING is a message sent by the caller to the called, indicating that the call is being processed.
An MCU can belong to only one service area, but a service area can have multiple MCUs.
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? ( )
A short message is when a message ( ) can be sent to a designated venue or to all venues for inter-venue communication and information prompting.
SDP It is not a transport protocol, it uses the appropriate protocol to get the job done, including protocols such as ( ).
In audio encoding, which of the following is a speech quality metric. () (3 answers).
Which of the following messages indicates that the request cannot be implemented on any SIP server . ( )
Sendto[(218.5.64.98:18616)][59285094444][0x00000065:err_reg_wrong_account_or_password]] From the above logs, you can tell that the reason for the registration failure is ().
The INFORMATION that the IP header in the SETUP message does not contain Is there? ( )
In audio coding technology, which of the following is a voice quality metric. ( )
Which of the following protocols belongs to the encapsulated transport protocol ( ).
In VR scenarios, the terminal cannot join the meeting ( ) in one of the following ways.
The following description of the cascading characteristics of the miniMCU is correct. () (3 answers).
In the hierarchical relationship of SIP structure, what are the following main items of the request message?
Loudness indicates the strength of the sound, which of the following factors determines the size of the loudness?
Dynamic mapping can be from multiple private addresses to a single public address, or from multiple private addresses to multiple public addresses. ()
Users can call a conference access number and then create a video conference based on the IVR prompts.
When accessing a specified meeting via IVR, what is the default IVR Unified Access Number?
Terminals with built-in mini-McU capabilities can hold multi-point meetings with the built-in MiniMU, but processing power is limited.
The frame does not have complete picture data, only data that differs from the previous frame.
Web recording can record audio and video output from any venue in a video conference (voice, SD/HD/Zhizhen) and play it back on demand via Webcast.
Small A found that the image is not clear and the overall image is dark when holding a video conference, please analyze it in combination with the optical principles of video conference construction, which of the following is the most likely cause?
When using the MCU wall riding mode, you need to modify the firewall in the original network (such as open ports).
Huawei VUE Exam Instructions: 1 The exam randomly draws 60 questions, with a score of 1000, and can be passed by 600;2 After the question bank is all mastered, you can make an appointment for the exam, and the day before the exam, you can make an appointment at the nearest test center; 3. The test question types are single choice and multiple choice, judgment, fill in the blanks, drag charts, and the questions will not tell single choice or multiple choice
You can tell by the options: the radio option is preceded by "Circle", the multi-select option is preceded by "Box"; 4 Exam questions and options are randomly out of order; 5 Documents: ID Card + (Student ID Work Card Credit Card Social Security Card Passport) One of the two documents in total 6. Arrive at the test room 10 minutes in advance (if you encounter special circumstances, you can contact the test room if you are late).
ZTE VUE Exam Instructions:
1. The exam randomly selects 60 questions, with a full score of 100 points, and can be passed by the exam 60 points; (some exams pass 80 points: for example, ZTE service specifications) 2 The question bank is all palmed
After holding the exam, you can make an appointment for the nearest test center the day before the exam; 3. The test question types are single choice, judgment, and multiple choice, each with 20 questions; 4 The order of the exam questions is single choice, multiple choice, judgment; the options are randomly out of order; 5 ID: ID 6 Arrive at the test room 10 minutes early (if you are late in case of special circumstances, you can contact the test room).
RFC2190 defines a total of 3 load heads for the H.263 video codec format: mode A and mode B and mode C/A mode is the recommended and commonly used transmission mode. ()
When the speech codec capability is negotiated in the SIP protocol, the voice codec supported by the local device is provided, including PCMU and PCMA Based on the RTP message shown in the figure, it can be seen that the ( ) voice codec is selected.
The MCU wall riding mode does not require the use of private protocols and can be used with terminals of different manufacturers. ()
capability negotiation is primarily used to declare the receiving and sending capabilities supported by this side. When declaring the priority capability set of this end, the other party needs to prioritize the use of the ability set.
RFC2190 defines a total of three formats of load heads for the H.263 video codec format: mode A, mode B, and mode C.
networking network, the H.245TCP connection of the private network terminal is established with TS. ()
If the meeting scheduled by the user is not held on time, which of the following measures can be taken to solve this problem?
What are the following message interactions included in the process of a terminal calling by number using the H.323 protocol?
For reverberation, the pickup is dominated by a direct sound, and the appropriate amount of reverberation sounds thicker, and it is recommended that the pickup direct sound be around 90%. However, the reverberation sound after 50ms will affect the language comprehensibility, and it is recommended that the sound energy reached within 50ms accounts for more than 80%.
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.
TESTED 24 Apr 2024
