Synchronous Conferencing

Synchronous conferencing is the formal term used in science, in particular in computer-mediated communication, collaboration and learning, to describe online chat technologies. It has arisen at a time when the term chat had a negative connotation. Today it is occasionally also extended to mean audio/video conferencing or instant messaging systems, given they provide a text-based multi-user chat function. The word synchronous in this case is not to be considered a technical term, but rather describing how it is perceived by humans—chat happens in real time before your eyes.

Free Video Conferencing Sites

Video conferencing

화상회의의 장점

  1. Allows real time visual contact between students and the instructor or among students at different sites.
  2. Supports the use of diverse media (Reed and Woodruff, 1995). Blackboards, handwritten documents, and videos may be incorporated at all sites.
  3. Enables connection with experts in other geographical locations (Reed and Woodruff, 1995).
  4. Can provide access to at-risk or special needs students (Woodruff and Mosby, 1996).
  5. Provides additional access to students at remote sites.

화상회의의 단점

  1. The initial cost of the equipment and leasing the lines to transmit conferences may be prohibitive.
  2. Companies which produce codecs have each developed unique methods of compression which are incompatible, although protocols have been established to allow communication among brand names. However, this universal standard compromises resolution and quality to a certain degree.
  3. Unless a strong effort is made by the instructor, students not located with the instructor may remain uninvolved in the course.
  4. If visuals, like handwritten or copied materials, are not properly prepared, students may have a difficult time reading them.
  5. If the pipe that carries the transmission among sites is not large enough, the students may observe ghost images when rapid movement occurs in real time (Reed and Woodruff, 1995).
  6. If the system is not properly configured, class members may observe an audio echo effect (Reed and Wooduff, 1995). The result is audio interference that detracts from the learning environment.

출저:http://www.uiweb.uidaho.edu/eo/dist10.html