Now, video conferencing has become the most advanced means of communication, then, what types of video conferencing system?
First, from the video conferencing technology to achieve the level of distinction, the current video conferencing systems are:
(1) TV live video conferencing system.
This system needs to rent a dedicated satellite channel, the transmission mode for the one-way transmission, to bidirectional transmission must be rented two channels. The cost of renting a satellite is very expensive and must also be complicated through approval. So this conference system can only be used for some special industries such as television stations.
(2) MPEG1, MPEG2 compression format video conferencing system.
MPEG1 requires a bandwidth of 5 Mb / s, MPEG2 requires a bandwidth of 3Mb / s, and the image quality drops sharply with the network transmission distance. Therefore, the system is usually only available for local high-speed network segments.
(3) based on ITU (International Telecommunication Union) H.320, H.323 series of standards and MPEG4 compression format video conferencing system.
The emergence of the system makes expensive video conferencing systems into commercial areas. As the MPEG4 standard set late, the first business development of the MPEG4 standard is not very uniform, which resulted in MPEG4 standard video conferencing system congenital compatibility. Currently on the market technology is mature and the real dominant is based on H.320 / H.323 standard video conferencing system.
Second, from the nature of video conferencing distinction, the current video conferencing systems are:
(1) hardware video conferencing system
Hardware video conferencing is based on the embedded architecture of video communication, relying on DSP + embedded software to achieve video and audio processing, network communications and the conference function. As the current hardware video conferencing systems need to be equipped with high-performance DSP processor and dedicated operating system, so there are expensive, high risk of investment, maintenance operations complicated features
(2) software video conferencing system
Software video conferencing is based on the PC architecture video communication, mainly rely on CPU processing, audio codec work, its biggest feature is cheap, and good openness, software integration convenience. It is also because of the advantages of software video conferencing systems, software video conferencing has now become the first choice for enterprise layout video conferencing systems.
Software video conferencing system, the main use of the server + PC architecture. In the center of the deployment of MCU server, multi-screen processing server and streaming media server; in the ordinary desktop PC configuration USB camera, headset and conference terminal software; in the conference room configuration high-performance PC, video capture card, conference camera and conference terminal software. In the holding of video conferencing, the use of Windows-based user interface for the set of meetings and management.
(3) based on SaaS platform video conferencing system
With the rapid development of Internet communication in recent years, especially the rapid development of “cloud” technology, the software video conferencing system has emerged a new trend, that is based on SaaS platform video conferencing system. This type of video conferencing system is characterized by: users do not need to install video conferencing software server (or even client), as long as the computer can access the Internet, the computer is equipped with audio and video output, you can through the browser to achieve remote video conferencing, remote interactive collaboration The Among them, has 20 years of successful experience in video conferencing ezTalks network video conferencing system, which is one of the best.