What is video conferencing?
Video conferencing is a communication technology that integrates voice and video to connect the remote users with each other via internet as they are in the same room. Each user needs a computer, microphone, web cam and a broadband internet connection for participating in the video conferencing. Users at both the ends see and hear each other in real time allowing natural conversation. Many communication companies have been dabbling in video conferencing technology.
Good bandwidth is needed for high quality of the video conferencing. Video conferencing got more popularity with the release of Microsoft Net meeting. Now currently there are a numbers of companies that are promoting the video conferencing software.
Video conferencing is very appealing to the educational and business sector. Video conferencing made it possible to bring the users closer (virtually face to face) hence saving the cost and time. Many universities have adopted video conferencing as an educational tool. Businessmen around the world use video conferencing to keep in touch with other people.
Video conferencing is in more demanding phase and more video conferencing applications and technologies are in the development and improvement process. Eventually video conferencing will allow the creation of the virtual cities, online places where people can work together without the need of physically present in the same premises. Using a computer, video camera and a broadband internet connection, you can establish a video conferencing connection.
Video conferencing is a very useful communication method because it can save the time and traveling cost of the people. A video conference between two people is known as point-to-point and among the more people is known as multipoint conference. Besides the audio and video transmission between the people, videoconferencing is also used to share the documents, computer displayed information.
More improvement is being made in the videoconferencing applications by which people can work and manipulate on the same documents and computer applications at the same time. IEEE gives standard and guidance for the development of videoconferencing. The H.320 standard tells that how video conferencing operates over ISDN telephone circuits. The H.323 standard tells how videoconferencing operates over the Internet (TCP/IP or IP).
The quality of the videoconferencing depends on the characteristics of the circuit between the conferencing sites. In H.323 world, a high quality conference needs about 768Kbs of bandwidth. In the universities and college campuses a higher bandwidth connection of 10Mbs is required.