Idea of video conference call service began from the TV broadcasting. In which only the observer shows his result to the viewer and there is no effort involve from the viewer side.
With some modification in this idea a video conference call service technique was introduced with the input/output from the both sides, an observer and viewer. This input/output in the video conference call service is the scenario of exchanging the voice, data and video signals between the viewing person and the observing person.
At the initial stage of video conference call service only few types of equipment were used to hold video conference call service. A video camera, screen, headphone having the facility of input/output feature, speaker and a special kind of transmission equipment use to transmit the input/output signals between the parties sitting at different places to precede video conference call service successfully.
For arranging a video conferenceall people wish to take part in the video conference call service are needed to present in the room in the same time slot at different locations. In the start the transmission of signals between the members of video conference call service was very slow; members use to wait for small time duration to get back the response from the other end during video conference call service. In was because of the fact that technology was not much advanced on that time.
Soon, a concept of wireless communication was introduced, and became much popular in the video conference call service world. This technology expanded with time and become cost effective technology, which became the most appealing factor for using the video conference call service.
People can only see the people and can hear their voice during video conference call service. But with the time passed, many technologies developed in the field of video conferenceand members were able to use different tools to make their video conference call service more effective and efficient.
