About video conference | Teleconference | Video conferencing | Polycom
Overview of the video conference
Video conferencing systems are tools of communication technology that allows two or more locations to interact via voice and images simultaneously through a digital telecommunication network. Face to face directly to known voice, body language and expressions of meeting participants.
The advantage of video conferencing:
1. Rapid communication between consumers, suppliers, management.
2. Information quickly can be sent, communicated, discussed for solutions.
3. Improved human resources / technology transfer / information quickly that relate directly to experts.
4. Increasing productivity, efficiency.
5. Reduce travel costs and save time.
Part of video conferencing:
Video inputs: the input camera
Video Output: Output is connected to the monitor / tv
audio input: inputs for microphones, CD player / audio source sharing.
Audio Output: connected with the speaker or speakers.
Transfer data: linked by telephone analog / digital, LAN / Internet.
Camera image capture, microphone capture the sound was followed by digital compression of audio and video streams in real time by using hardware / software called coder / decoder / codec. audio clips that were compressed and then transmitted via a digital network ISDN or IP.
Type of video conferencing systems.
Complete video conference system, consisting of cameras, monitors, cabinet, mic input, speakers, codex, computer everything is available in one package.
The camera can capture images all participants at the meeting, pan to the left / right / top and bottom. Mic picking up sound from all participants at the meeting, the mic is placed on the meeting table at the boardroom.
PC systems, which use different types of cameras and microphones, pc systems typically use standard H323
Video conferencing is selected based on need, for one person ( personal telepresence) , a small group, medium group, large group ( room telepresence) to the large-scale meeting ( immersive telepresence)
The quality of video conferencing systems are also classified into standard video quality, high resolution quality ( high resolution and quality high definition ( HD)
communicating between 3/ 4 end point video conferencing is required MCU ( Multipoint video conferencing) . MCU can be either software and hardware.
Software MCU may only connect 4 places at once, while Hardware MCU can connect more than 50 places at once.
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