How videoconferencing works in business and education

Videoconferencing in Business & Education

In recent months the interest in videoconferencing has grown dramatically because of the terrorist attacks on America. Businesses and business travelers have embraced this form of distributed multimedia as a means of avoiding air travel. It is also a popular technology with educational institutions. The advent of videoconferencing has allowed people in different parts of the world access to quality education.

This discussion will investigate how videoconferencing works including the components, proper protocol and bandwidth that are needed to deploy the technology. We will then discuss the uses of videoconferencing in business. There will be an investigation of the advantages and disadvantages of using the technology in the business environment.

Our research will subsequently focus on the educational uses of videoconferencing. We will discuss why videoconferencing is used in the academic environment and the challenges that educators face in incorporating the technology into their teaching strategies.

Video Conferencing

Encarta defines videoconferencing as "the holding of a meeting in which participants are in different places, connected by audio and video links" (Encarta). The technology was invented in the mid-80's and has grown in popularity since 1997.

Components

There are six components that are essential to the success of videoconferencing. These components include; a Computer which can be either a PC or Macintosh, an Internet Camera that is connected to the Computer, an Internet Connection that is no less than 56k (the higher the speed the better the quality of the conference), a Headset (which allows for better audio than a microphone, a Sound Card, and a Videoconferencing Software Program. (Video Conferencing: Easy as 1,2,3)

Protocol

There is a standard protocol for videoconferencing, which is H.323 Protocol. This protocol is an International Telecommunications Union standard that provides specifications for equipment, computers, and services for multimedia communication over networks. H.323 is the standard protocol for various types of audiovisual conferencing. The data that is transmitted across the network can be videoconferencing or audio conferencing data. Depending on the application that you are using you should be able to dial into someone else's IP address. This can be done with Microsoft NetMeeting, CuSee Me, Intel Video Phone, and others. It is vitally important that the software application uses H.323 protocol. (H.323 Protocol: Conferencing for One and All)

Bandwidth

The level of bandwidth is very important to the success of a videoconference meeting.

The amount of bandwidth that is transmitted affects many aspects of online communication and conferencing such as web telephony, file sharing, videoconferencing, and webcams. Bandwidth primarily means a measure of data transfer speeds or as a measure of space available for data to occupy. (Better Bandwidth Means Cooler Conferencing)

Uses of Videoconferencing

Challenges that Educators face when using videoconferencing

It is often assumed that, since you are still in "real-time" with the students, your face-to-face skills will be enough. Excellent face-to-face presentation skills are necessary, but the lecturer must go beyond these skills and incorporate new skills. Some suggested strategies to improve the learning experience, are:

Set expectations and establish protocols. To combat this an instructor must make expectations known before the module. Educators can also aid students in understanding the differences between broadcast television and two-way compressed videos. They must also explain the difference in audio/visual quality along with protocols. (Greunen, Wesson)

Involve students from the beginning. Educators can use icebreakers to communicate with students and to allow them to feel at ease.

Use visual aids. The use of visual aids can also help students with their learning experience. This can be done through power point because PC-based and Desktop systems can share the application. Power point can be used to show objects as well as photos and graphics.

Provide supporting materials. Teachers can use handouts to help remote students follow the lecture.

Punctuate lectures with small group activities. Educators should assign small group activities with a task that can be discussed later and allow students to take a break in between chapters or subjects.

Reduce distractions. It is also important the instructors reduce distractions as much as possible. This can be accomplished by posting a still image during a class activity.

Encourage dialogue. Finally it can be difficult for students in a videoconference setting to ask questions. Teachers must encourage the asking of questions so that the student can learn.

Recent Problems associated with Videoconferencing

Recently there have been problems associated with the use of video conferencing.

Michelle Delio of Wired News reports that,

Even a relatively unskilled attacker can transform some video-conferencing systems into video-surveillance units, using the devices to snoop, record or publicly broadcast presumably private video conferences. Some of the issues have been addressed in a system upgrade released last week, but many users said they weren't advised they needed to upgrade their ViewStation's operating system and were unaware of the security problems." (Delio)

The article also states that many hackers can easily recover View Station administrator passwords. In addition these hackers can obtain control of the device and record or monitor videoconferences. Eric Goldberg, general manager of Navastream, which provides communication security services. believes that there are definitely serious problems with the security associated with videoconferencing. Ken Pfeil, who is the senior security consultant at Avaya, which builds and manages corporate communications networks, validates his fears saying, "A hacker could very easily take administrative control over the entire conferencing system. One would need only a Web browser to point and click their way into the system." (Delio)

Conclusion

Our investigation has thoroughly examined the technology known as videoconferencing. We have found that videoconferencing is defined as a meeting composed of individuals who are in different places communicating via audio and video links. We also established that there are several factors that must exist for a videoconference to take place. These factors included a webcam, a computer and a soundcard. In addition we concluded that the clarity and quality of a videoconference is dependent upon the bandwidth and the speed of the Internet connection.

As our discussion continued we found that there were two primary uses of videoconferencing. These uses included business and educational institutions. We found that the primary reason why businesses use videoconferencing is to eliminate the need foe unnecessary business travel. We also found that there are several advantages and disadvantages to teleconferencing within the business environment including cost savings and lack of specific ownership.

Our research found that videoconferencing is often used in the academic environment to reach rural and foreign communities. We discussed certain challenges that educators face when videoconferencing is used such as using technology to incorporate visual aids. Finally we discussed current issues involving the safety of videoconferencing. We discovered that hackers can gain access and control over a video conference very easily.

Appendix and References

Appendix A- Breakeven table for converting meetings to videoconferencing