Non-T.140 subtitles only support sending and receiving subtitles from H.323 type terminals.

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.

A short message is one that can send ( ) messages to a designated venue or to all venues for inter- venue communication and information prompting. (Fill in the blanks)

The original MCU cascade has a cascade channel, which can only transmit one video code stream, and the Zhizhen conference can only transmit the medium-screen image, supporting multi-channel cascading, each level of MCU Multiple video can be transmitted, and a complete Zhizhen 3-screen image can be transmitted to enhance the experience.

Loudness indicates the strength of the sound, ( ) determines the size of the loudness.