20387-3

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20387-3 Application Field and Working Principle

20387-3, otherwise known as the Audio Line Standard for Multipoint Audio-Visual Equipment, is a standard set forth by the International Telecommunications Union (ITU). It is a technical standard designed to ensure interoperability between different types of audio-visual equipment, such as video conferencing systems, digital video codecs, and other multimedia systems. The standard defines the necessary parameters for audio and video signals that should be exchanged between these systems.The 20387-3 standard is applicable to both video and audio applications and defines the required line level and impedance characteristics necessary for reliable operation. These settings then must be applied to each piece of equipment that is used on the network. The standard outlines the necessary electrical characteristics that must be followed in order for the equipment to interoperate properly, ensuring a reliable audio-visual experience for everyone involved.In terms of the actual application of the 20387-3 standard, it is typically used for video collaboration systems, such as video conferencing. In these applications, it is used to define the parameters for the video signals that will be sent between the various participants of the conference. The line-level and impedance settings are necessary in order for the video signals to be relayed properly and without distortion. It is also possible for the parameters defined by the standard to be used for other types of audio-visual systems, such as digital signage or digital projectors.The 20387-3 standard also outlines the necessary procedures for setting up the audio and video signals and maintaining them throughout the course of the network. This includes the necessary configuration of components, such as cameras, microphones, and speakers, in order to ensure that the signals are transmitted and received without any issues. Additionally, the standard is used to provide guidance on the necessary cabling requirements and how it should be done in order to ensure optimal performance.Finally, the standard also defines the working principle for the audio signals. This includes how the audio signals are synchronized and routed between different pieces of equipment, as well as how the audio signals are processed and amplified. This ensures that the audio experience remains consistent and of a high quality, regardless of the size of the network or of the audio components involved.By following the requirements set out by the 20387-3 standard, audio-visual networks and systems can be properly configured and operated in order to ensure a reliable and consistent audio-visual experience for all participants involved.Therefore, 20387-3 is not only an important technical standard in the audio-visual industry, it is also a necessary one. Without it, any audio-visual system would be unreliable and prone to problems, which would seriously hamper its use. As such, it is essential that all systems conform to the standard in order to ensure maximum reliability and performance.

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