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The HD endpoints support point-to-point calls based on(). (Select 3 answers)

Applications typically run RTP on top of ( ). Each RTP packet is encapsulated into a ( ) data packet.

When using the MCU wall riding mode, there is no need to add other devices for traversing the public and private networks.

An SIP message body is in MIME format which supports message bodies (text or binary) of any types and composite message bodies which contains multiple single message bodies. ( )

If the sender and receiver ( ) are the same, MCU forward directly. (Choose 3 answers)

In Multi-channel Cascading, the protocols of all multi-channel conference sites must be consistent, but band widths can be different. ( )

In Videoconferencing room the reason Why the illuminance cannot be too low is because the camera generates significant white noises under low illuminance using CCD or CMOS. ( )

Forward error correction (FEC), when the two parties establish a call and detect that the media stream packet loss exceeds 0.1% within 10s, the super error correction function will be enabled, and the super borrow correction function will divide a part of the call bandwidth. It is used to transmit redundant code streams that are resistant to packet loss.

For FEC, When both parties establish a call and the packet loss in media stream exceeds 0.1% within 10s, the FEC function is enabled. FEC separates some bandwidth from the call bandwidth to transmit anti - dropping redundant stream. ( )

The stretching mode is full-screen stretching according to the output ratio, and part of the image will be captured.

By default, a single registration SC server supports a maximum of 20,000 registered devices.

The NLog V2 obtains statistics from the ( ).

The basic concept of white balance technology is "regardless of any light source, white objects can be restored to white", and the color cast phenomenon that occurs when shooting under a specific light source is compensated by strengthening the corresponding complementary color.

Which of the following statements are true about the multi-level protection of the collaboration hardware platform? (Choose all that apply.)

When the MCU is working in wall riding mode, GE0 is registered with switch center and GE1 can only support IP address calling.

Which of the following system module realize the regional management? ( )

If two MCUs are cascaded to hold a conference, the MCUs join the conference as virtual sites. ()

When terminal/MCU using number to call, Which of the following item does not contain in ARQ calling information ? ( )

All MCU under the same service area must have the same prefix number. ( )

Audio Enhancement Technologie-ANR is used to adjust the voice volume of a telephone call. ()

Capability Negotiation is primarily used to declare the ability to receive and send supported by this side. Declare the preferred capability set at this end, and the other party needs to prioritize the use of this capability set.

In H.323 protocol, opening the logical channel follows the rule of "who want to transmit, who open it". ()

In H.460 network, the private network terminal H.245 TCP connection is established with TS. ( )

Network recording service During the meeting, in addition to recording the content of the meeting, you can also watch it in real time through the live client.

Full HD image resolution is?

In Multi-channel Cascading, the prioritie at using the multiple channels is ().

The Call-ID header field is used as a unique identifier for a series of messages. In the dialog, in all requests and responses sent by each UA, the Call-id must be the same.

Wireshark supports packet decoding for various protocols, include (). (Select 3 answers)

MCUs assigned to the same service area must share a prefix. ()

A video terminal on a private network (video terminal A) uses the IP address 10.1.0.10, the static NAT outbound address is 61.1.0.10, and the GK IP address is 61.1.0.11. A video terminal on a public network (video terminal B) uses the IP address 61.1.0.12. Video terminal B can dial ( ) to call video terminal A.