Image of a slide projector
- 1. Distance Education Videoconferencing Techniques
- 2. Projects 1 . Observe and critique one 2-way video/2-way audio conference distance learning program, and one 1-way video/2-way audio satellite delivered distance learning program.
- 3. Projects 2. Critique two computer mediated communication (CMC) education or training programs: 1 from NASA Live (as student) (SENG) 1 from the SENG Website (asynchronous) Link: http://elearn.cerc.wvu.edu/
- 4. Projects 3. Working with a partner, prepare, conduct and video tape a 20 minute multimedia presentation in a distance education site of origin (your office, school, home or CERC). Select a topic of your choice. This will be a simulation of a satellite, videoconference or CMC distance education program.
- 5. Distance Learning Develop an online class Satellite – Teaching in front of a camera w/mic where you are being broadcast and your students answer questions using a phone bridge.
- 6. Distance Learning Develop an online class Videoconference – Teaching in front of a camera w/mic where you are being broadcast and your students also are being broadcast allowing total interaction.
- 7. Distance Learning Develop an online class CMC – Teaching in front of a camera w/mic where you are being broadcast over the Internet and your students can interact using chat allowing minimal interaction.
- 8. Projects 4. P repare: One of the pages of the TE601 web page.
- 9. Bill Duff, Jr. Program Coordinator for Distance Learning Develop and manage distance learning courses and work with multimedia and distance learning projects for the Lane Department of Computer Science and Electrical Engineering. Produce video for web and class applications, manage Electronic Classrooms with distance learning classes, and delivery of live Internet classes and classes on demand. Oversee management of departmental web page. Manage uplinking facility at CERC/WVU. I also teach classes on Video Production for Training and Education and Distance Learning for the College of Human Resources and Education. Dance Classes WVNET 2002 Presentation Poetry Theme Song "Wow! I'm Wacky, I'm Crazy, I'm absolutely Dazy!"
- 10. Name Web Site Section Bond Links from lectures Jin Syllabus Miller Main page Munson Technology Nesselrotte Email Links O’Hara Main Page Silverman Virtual Class Spataro Docs Swearengen Related Links
- 11. Projects 5. Working alone , create an infrastructure development plan for an institution to improve their ability to use distance education/training. This must be based on an actual institution or facility.
- 12. Videoconferencing 2-way Video & 2-way Audio Cameras and mics Local fiber optics or similar hook up Allows teacher/student interaction Can accommodate large audiences http:// www.elearn.wvu.edu/IViN/index.htm
- 13. Videoconferencing Preparation for videoconferencing Use bold, 14 point font or bigger Use landscape mode Use simple graphics Leave margin around page Wear colors, not white or stripes
- 14. Videoconferencing Successful conferencing Distribute handouts beforehand Have info, phone #’s, connections Arrive early Transmission delay, respond accordingly Avoid papers, noise near mic’s Avoid side conversations At multipoint sites, mute mic when listening Wrap up time at end
- 15. Videoconferencing Reasons to Use Conferencing Reduces the need for business travel.
- 16. Videoconferencing Reasons to Use Conferencing Reduces the need for business travel. Access is getting cheaper
- 17. Videoconferencing Reasons to Use Conferencing Reduces the need for business travel. Access is getting cheaper Cameras
- 18. Videoconferencing Reasons to Use Conferencing Reduces the need for business travel. Access is getting cheaper Cameras Improve productivity
- 19. Videoconferencing Reasons to Use Conferencing Reduces the need for business travel. Access is getting cheaper Cameras Improve productivity Interactivity
- 20. Videoconferencing Advantages of Video Conferencing Establishes a connection between participants Enables connection with external resources Supports use of diverse media Document sharing facilitates collaboration and feedback
- 21. Videoconferencing Primary components: television cameras monitors microphones speakers communications network
- 22. Videoconferencing communications network Coaxial cable Fiber optics ISDN T1 ATM IP Satellite DSL and Cable Modems
- 23. Videoconferencing communications network Coaxial cable Used primarily between short distances like court room and jail
- 24. Videoconferencing communications network Fiber optics Used mainly as intranet like within a university Consists of many strands of fiberglass which conducts and can send large quantities of information
- 25. Videoconferencing communications network ISDN I ntegrated S ervices D igital N etwork voice and data are carried by bearer channels (B channels) bandwidth of 64 kb/s A data channel (D channel) = 16 kb/s H channel is 6 B channels = 384 kb/s
- 26. Videoconferencing communications network ISDN Basic Rate Interface ( BRI ) 2-B channels and 1-D = 144 kb/s Primary Rate Interface ( PRI ) 23-B and 1-D = 1536 kb/s ISDN telephone lines and codecs use the ITU H.320 standard Internet (LAN/WAN) connections and codecs use the ITU H.323 standard
- 27. Videoconferencing communications network T1 - high speed digital network (1.544 mbps) developed by AT&T 64Kbps 1/24 of 1 Channel DS0 T1 =1.544Mbps 24 Channels DS1 3.152 Mbps 2 T-1 48 Channels DS1C T2 = 6.312 Mbps 4 T-1 96 Channels DS2 T3 = 44.736 Mbps 28 T-1 672 Channels DS3 89.472 Mbps 56 T-1 1344 Channels DS3C T4 = 274.176 Mbps 168 T-1 4032 Channels DS4
- 28. Videoconferencing communications network ATM - Asynchronous Transfer Mode Also known as cell relay Speeds - 2.5 Gb/s in operation, 10 Gb/s in limited use and spanning up to 40 Gb/s in trials roughly 80 percent of the world's carriers use ATM
- 29. Videoconferencing communications network IP LAN – Local Area Networks WAN - Wide Area Networks MAN – Metropolitan Area Networks Allows point-to-point between computers or codecs bandwidth of around 384-768kb/s is very common Internet – bandwidth dependent
- 30. Videoconferencing communications network DSL and Cable Modems (Broadband Services) DSL phone connections dedicated home to provider's central office using copper wire Residential ADSL - 1.5 Mbps http://www.videnet.gatech.edu/cookbook//
- 31. Videoconferencing Characteristics of communications channels Types of signals: digital and analog Transmission modes: asynchronous and synchronous Direction of transmission: simplex, half‑duplex, full duplex Transmission rate
- 32. Videoconferencing Communications equipment Modems Multiplexors Front‑end processors Network interface cards
- 33. References http://www.anixter.com/ http://en.wikipedia.org/wiki/
- 35. Videoconferencing Conclusion Conferencing technologies enable real-time interaction of students and teachers with experts, collaborators, and organizations all over the globe. Conferencing is often more convenient and less expensive than travel, and a wider audience can be reached. Education can truly become a classroom without walls. The major limiting factors are bandwidth, technical training, and equipment and software expenditure. One last word of advice is to always keep in mind that conferencing takes careful planning and preparation. Guest appearances must be arranged ahead of time, equipment must be checked out, set up, and tested, and participants need to learn the basics of the technology and its use.
Editor's Notes
- #3: We can’t get a videoconference or satellite class so you don’t have to do this one.
- #4: Permission granted Do not participate Sign in as guest
- #9: You all have already signed up for a topic. I ask that you get this done asap so we can start putting it together.
- #10: Here is an example of using my web site. Remember to use good design principle like visible fonts, links, etc. You want to make sure you have a good main page with all the info clearly visible.
- #11: Here is the assignment list and who is responsible for which area. And of course we need the main page to be done first so we can fit the other parts to this puzzle in terms of color schemes and fonts etc. Are there any questions?
- #12: This project is designed for you to discover a way to use distance education to help improve and already existing project or course, or to create a new one. This must be real and with some department or school or business. Any questions?
- #13: A videoconference (also known as a video teleconference ) is a set of interactive telecommunication technologies which allow two or more locations to interact via two-way video and audio transmissions simultaneously.
- #14: How do you prepare to videoconference apart from the technical side? You have to prepare your materials as you normally do so they can be visible to your students.
- #15: In order to achieve successful results, you need to…
- #16: gas and oil prices have risen rapidly in recent times, which is inevitably going to make flying more expensive. If you have a choice of flying a dozen salespeople into your main head office for training, as an example, or hooking up a videoconference, it's easy to guess which is going to be more cost efficient. Videoconferencing can be used for training, business meetings, client presentations, interviews, client updates, and so on, all at a fraction of the cost involved in moving people around the country.
- #17: Currently, 85% of businesses use broadband rather than dial-up to connect to the internet, and that's only going to increase in the coming years. So as most businesses already have the broadband technology available at the workplace, hooking up a videoconference is made much simpler and cheaper. More than 60% of homes now have broadband too, so employees can easily join a videoconference from home.
- #18: Web cameras are also becoming more powerful and of a higher standard. It's possible to pick up a cheap web camera and still be able to transmit a picture of reasonable quality. This is helping videoconferencing become more widely used, as it's become so much simpler to join a group of people together using web cameras. Only a few years ago this wasn't possible, because the quality of web cameras was so poor. Now the images are much clearer, which helps make videoconferencing a success. Web cameras are easy to find, with computer and electronic stores as well as department stores having them available for anything from ten dollars right through to hundreds of dollars.
- #19: Money is saved when people don't need to travel, but also an enormous amount of time is saved. By the time someone drives to the airport, goes through security, waits for their flight, flies, picks up their baggage at the other end, drives to a hotel.... half a day or more of productive time is lost. With videoconferencing, as soon as the meeting is over you can go back into your office and get on with your work, not spend another half a day traveling.
- #20: Video conferencing is also becoming more widely used in education at all levels. It's especially popular in the institutions of higher learning. Videoconferencing allows all sorts of new learning experiences to take place, and early results suggest that students gain a great deal from the experience of learning things in a visual way. It's easier to show how something is done, or learn about other cultures. It also means that an expert can spare an hour of time to talk to a class, without disrupting the day extensively. Previously, the expert may have had to put aside at least half a day to allow time to get to or from the school, which would make the idea of talking to a class less appealing.
- #21: Conversation and body language can enhance communication. Interactive teaching strategies such as questioning and discussion can involve and motivate learners. Remote experts can validate understanding and provide practical examples. The real-world connection improves motivation. Graphics and photos look great on slides and can help to communicate a difficult concept Some systems allow application sharing which encourages collaboration and feedback in real-time.
- #25: And as we have already mentioned, you can send 100 terabits per second per fiber .. 1 terabit = 1012 bits = 1,000,000,000,000 bits (one trillion ,
- #27: The basic service is intended to meet the needs of most individual users. PRI is intended for users with greater capacity requirements.
- #29: This information is at most 2 yrs old and may have changed a little toward the fiber optic end.
- #30: Bandwidth dependent meaning the bandwidth fluctuates depending on usage
- #32: Simplex…type of data transmission where data travels in only one direction. For example, a print job is only sent from the computer to the printer. Half-duplex…Full Duplex transmission indicates the transmission of data in two directions simultaneously. For example, on a local area network with full-duplex transmission, one workstation can be sending data on the line while another workstation is receiving data. On the other hand, a half duplex transmission indicates that data transmission happens only in one direction at a time. is the rate at which information is processed by a transmission facility .
- #35: AT&T