A single Media board of VP9660 MCU can support up to () 1080P 30 ports?

A. 12

B. 36

C. 24

D. 8

Regarding call bills and billing scenarios, which of the following statements is correct () (multiple choice)

A. The CDR data will eventually need to be imported into the CDR database

B. Users can query the bill data through the web page of the U1900 unified gateway

C. In the CDR integrated network, the third-party billing system is used as FTP Client

D. A single bill server can store and process bill data from multiple IP PBX hosts at the same time

Which of the following methods can reset the web login password of the TE terminal? () Multiple choice

A. When the system is just started, long press the mode button of the TE30 terminal

B. When the system is running normally, long press the Reset button on the TE60 terminal

C. Log in to the TE40 terminal via SSH and enter web password 0

D. Restore factory settings via remote control

In the VoIP system, what are the factors that affect the quality of voice calls () (multiple choice)

A. Jitter

B. delay

C. Packet loss

D. bandwidth

The U1900 system is connected to the PSTN through a digital trunk. In U1900, phone A cannot call user B's On mobile phone, user B can call back phone A normally. Which of the following reasons may cause this failure? () (single choice)

A. The digital trunk connection between U1900 and PSTN is faulty.

B. Phone A is not registered properly.

C. Phone A outbound call permission restriction

D. Phone A has been added to the system's blacklist of called parties

Among the following types of boards, the one that can provide the function of connecting the U1960 to the PSTN is () (single choice)

A. SCU

B. ASI

C. MRS

D. OSU

If AAC_LD uses a coding rate of 48kbps and a packing time of 20ms, what is the IP bandwidth occupied by the codec () kbps

A. 80

B. 74.4

C. 64

D. 76.6

Which Huawei patented technology is newly introduced by the TP3206 system on the basis of TP3106 () (single choice)

A. Common optical center camera technology

B. Remote handshake

C. Electronic brand

D. Remote dinner

In the U1900+SC solution, eSpace 8950 is used to call the conference access number of the video conference system. When the conference list page appears on the phone screen, which statement is correct ()

A. You can select the conference B you want to join through the touch screen of the 8950 phone.

B. You can use the arrow keys on the 8950 phone to select the conference you want to join

C. The number key 2468 of the 8950 phone can be used to select the conference to join

D. You can use the microphone of the 8950 phone to select the conference you want to join by voice.

H.264 encoding, the main reason for blocking is () (single choice)

A. The macro block is in the intense motion area, the difference is big, resulting in obvious edges

B. The quantization level of the coding block jumps, resulting in sudden brightness changes at the boundary

C. Unreasonable division of macroblock coding modes, resulting in false edges

D. Deblocking filter (Deblocking) is not strong enough, resulting in not smooth edges