From voice communication to multimedia communication

With the improvement of data transmission rate, communication is no longer limited to simple voice calls, but integrates image, video, Internet and other services, greatly enriching our communication experience.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

People perceive the real world and obtain information through senses such as hearing, vision, smell, and touch, and transmit information through communication. Therefore, the basic form of communication is to establish a channel (channel) for transmitting (transferring) information between the source (beginning) and the destination (end). In the past, communication was limited to voice due to technological and demand limitations. With the advent of the information society, people's demand for information will become increasingly rich and diverse, and the development of modern communication has provided conditions for this. Therefore, the information referred to in modern communication is no longer limited to single media information such as telephone, telegram, and fax, but rather multimedia information that integrates sound, text, images, data, and so on.