16. The initial cost of the equipment and leasing the lines to transmit conferences may be prohibitive.
17. Unless a strong effort is made by the instructor, students not located with the instructor may remain uninvolved in the course.
18. If visuals, like handwritten or copied materials, are not properly prepared, students may have a difficult time reading them.
19. If the system is not properly configured, class members may observe an audio effect. And the result is audio interference that detracts from the learning environment.
20. The absence of QOS (Quality of Service) provides virtually no guarantee of a satisfying and successful experience.
21. Though the technology is improving, a successful videoconference is dependent upon the connections and technologies at all of the participating sites like AND the network infrastructure.
45. Makes use of the cabled MAN connections in Scottish HEIs and special technology which compresses and bundles up the signal (Asynchronous Transfer Mode).
59. This research uses dual-process cognitive theory to describe how people process information differently when it is delivered via videoconference rather than when it is delivered face-to-face. According to this theory, relative to face-to-face communication, people in videoconferences tend to be more influenced by heuristic cues such as how likeable they perceive the speaker to be than by the quality of the arguments presented by the speaker. This is due to the higher cognitive demands that videoconferencing places on participants.
![Sultan Qaboos University College of Education Instruction and Learning Technologies Department __________________________________________________________________________ Review of a DE Technology ■Done by: Bader Mohammed Al-Wardi 68709 Abdullah Said Al-Kaabi ■Submitted to: Dr. Alaa Sadik ,[object Object],Video Conferencing System is a set of interactive telecommunication technologies which allow two or more locations to interact via two-way video and audio transmissions simultaneously. Also we can define it as the using of computer, video camera, and network such as the Internet, to conduct a live conference between two or more people. Finally, video conferencing is most basic form is the transmission of image (video) and speech (audio) back and forth between two or more physically separate locations. Video Conferencing System contains some basic components like: ,[object Object]](https://image.slidesharecdn.com/articleofvideoconferencing2-100104025535-phpapp01/85/article-of-video-conferencing2-1-320.jpg)
