The types of available technologies used in Distance Education can be divided into two groups: synchronous and asynchronous. Synchronous technology is used in distance education lessons in which learning is occurring in different places but at the same time. Asynchronous technology is used in lessons in which learning is occurring in different places but also at different times. Synchronous technologies include: Telephone,
Videoconferencing, Web Conferencing and so on. Asynchronous technologies are: