To start teleconferencing the only necessary stuff, when it comes to audio conferencing is to have a telephone system, a connection already set up, and a requested teleconference service be it for calling inside the country or internationally. The rest is done having the telephone number of the person and dialing it. To begin a video conference it is necessary to have the appropriate video telephone equipment for both sides and the service requested to the respective provider. They might have to set up additional cable lines for this service to be available at home. To have a web conference it is only necessary to count with a computer, an internet connection, a web camera, a graphics card, and request the service from a provider online or use a chat program that counts with video chat.