Page 265 - DEDU403_EDUCATIONAL_TECHNOLOGY_ENGLISH

Unit-31: Interactive Technology

Notes

As a result of revolutionary change in communication and mutual interaction through
software and hardware techniques, the fi eld and structure of teleconferencing has
been developed whose results can be seen in our daily lives.

31.2 Types of Teleconferencing

At present, following three types of teleconferencing are popular—
1. Audio Conferencing
2. Video conferencing
3. Computer Conferencing
1. Audio Conferencing—It leads the simplest and most popular form of teleconferencing. In this
conference, telephone is used to set up communication between two participants. It is an extended form
of telephone services implemented between two people in which conversation and communication
field is expanded to more than two people.

2. Video Conferencing—It is more beneficial than audio conferencing because two people sitting at
distant locations not only listen to each other but they can see each other on the television screen as they
are sitting in front each other.
3. Computer Conferencing—It leads to an advanced and effective combination of the types explained
above – audio conferencing and video conferencing. For this type of conferencing, powerful multi-way
services are used. Here we can express written material and graphics etc. to the people participating in
the conferencing through internet that can be received by them using their computers. Then they can
forward their responses and activities to sender of the communication materials or desired people in
the conference through internet services or they can contribute to keep continuing the communication
process or conversation with the people who want to participate in the conversation. They can use
audio and video means through multimedia services of the computer in order to exchange this type
language, graphics or other materials. As a result all participants of the conference can hear the voice
of each other with the help of sound recorder or earphones and can see each other through web cams.
Through online services, the participants of this type of conference can forward written, printed or
sketched messages using email and chatting services. They can hear the speech of the users and see
their actions and reaction on the same computer as they were sitting in front of each other. Beside this,
the major advantage of computer conferencing is that the participants need not to be present online.
Following methods of visual contents and components are used to make teleconferencing services more
successful—
1. The electronic copies of the typed message can be forwarded through Fax.
2. Electronic chalk board can be used. Whatever written on the board is converted into digital
information which can seen by a participant sitting at a distant location on his monitor.
3. Video text or Tele text systems are also used here.
The goals of teleconferencing can be achieved in an effective way if computer technology is included
in the video conferencing. Through this type of event, students sitting in a classroom in Delhi can be
involved in serious dialogue and conversation with the participants sitting at Bangalore or London. They
can see each other smiling on monitor screen and whatever they want say for setting up conservation,
they can type on the keyboard through Chat Window. In this way participant sitting at distant locations
can experience whatever is happening, regarding exchange of information and mutual discussions as
they were sitting under the same roof.

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