Today the world is considered as a global village, this has happened only due to the increase in communication
technology. The world is becoming smaller and smaller because of the use of highly advanced communication tools. An example of communication technology is teleconferencing. Teleconferencing is a telephone call between two or more people. The most simple form of teleconferencing is using three-way calling to setup your own teleconference between yourself and two other participants. More advanced PBX equipment can setup conference calls between more than three participants. Most businesses choose to use a teleconferencing service instead of purchasing and maintaining their own teleconferencing systems. Another advancement in the communication is the fax which is know as facsimile. It is a telecommunication technology used to transfer copies of documents, especially using affordable devices operating over the telephone network. The device is also known as a telecopier in certain industries. When sending documents to people at large distances, faxes have a
distinct advantage over postal mail in that the delivery is nearly instantaneous, yet its disadvantages in quality have relegated it to a position beneath email as the prevailing form of electronic document transferral.