Which U1900 Series Gateways Does ASI/OSU Not Match? [Multiple selection].

The video input interface supported by cloudLink Board is ? [Multiple Choice].

Huawei's converged communication solution supports unified architecture, full-service, all-terminal convergence, and cloud-based deployment [single choice].

The type of video interface that TE40 does not support is [radio].

After the user has activated the differential ringing service, you can understand the type of user who is the main caller through the ringing mode of the telephone, and the difference ringing cannot distinguish which of the following call scenarios? [Single Selection].