A videoconference is a kind interaction through devices, which allow two or more people in different places to remotely communicate simultaneously. It is also called video meeting or audio-video remote meeting. It’s different from a videophone because the technology is focused on the conference not the individual.
The most primitive type of video conferencing equipment is the television. Though the transmission of information was one way there is feedback after transmission. The cycle of information and the process of feedback is fulfilled by the television that qualifies it as a video conferencing equipment.
Since the development of digital telephony and internet based services like software, such as NetMeeting, MSN Messenger, Yahoo Messenger and other instant messaging web plug ins that allow transmission of messages real time through the internet. The Internet has become the most important tool for video conferencing and other instant messaging services.
Because of the sheer speed that the Internet has within it self and the ability to transfer information real time most of the web based videoconference centers puts most of its resources online.
Because of the advancement of Internet technology it has been possible over the years to have simultaneous videoconferencing among three or more remote points. These remote points can be anywhere in the world and the remote locations need not have a special set of equipment or software.
There is a bridge though that connects all of these remote peripherals on to the network and that is called the MCU or the Multi Channel Unit, it allows different computers to run the same format code to et communicate in one network.
There are MCU bridges for IP and ISDN-based videoconferencing. The MCUs used as bridges on IP and ISDN connections are most of the time pure software, and others that can be found in other forms of connections are a combination of hardware and software.
An MCU’s type is determined according to the number of simultaneous calls and conference participants it can handle, its ability to carry out information exchanges, shared programs, shared documents, shared application and other different kinds of sharing peripherals available on the conference. One god thing about MCU’s is that it can be a complete stand alone software for conferencing since it does not need hardware acceleration because it is purely software accelerated.
Because of the needs and the technology available to meet those needs, video conferencing has been more than a necessity for education, medicine, law making, and business.
For education the impact of video conferencing to it and the system can be seen easily. Because high speed Internet connection is becoming a much-needed part of modern curriculum, video conferencing has also been part of the next step towards modernization of the school system. Because of video conferencing special lecturers can now remotely conduct lectures, teachers can be on location and still deliver the lesson and correspondence between schools can be easily done through video conferencing.
Videoconferencing classes also adds to the possibility of a conversation in the scenarios such as a live conversation is needed between people in different countries. A visual information is an important component of the telephone conversation, the parties of the conversation can't physically come to the same location.
The expense or time of travel is a consideration because these situations calls for something drastically fast and efficient.