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Educational Telecommunications

This book provides a comprehensive overview of telecommunications in education, covering topics such as distance education, teleconferencing, computer networks, and the internet. It explores various modes of communication and types of telecommunication systems. Suitable for educators and students interested in leveraging telecommunications for educational purposes.

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Educational Telecommunications

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  1. Educational Telecommunications by Gerald Knezek Professor of Technology & Cognition University of North Texas

  2. Telecommunications • Tele - at a distance • Communications - exchange of information

  3. Telecommunications • Communications over distance or time

  4. Modes of Communication • Simplex • broadcast radio, TV • Half Duplex • speakerphone • Full Duplex • telephone

  5. Types of Telecommunication Systems • Audio • Video • Data • Combinations

  6. Audio • Broadcast Radio • Two-way Radio • Audio Teleconferencing

  7. Video • Broadcast Television • Slow-Scan TV • Two-Way Videoconferencing

  8. Data • Computer-Mediated Communication • Asynchronous (E-mail) • Synchronous (Chat Mode) • Computer Conferencing • Computer-Supported Collaborative Work

  9. Required Data Comm. Equipment • Computer • Modem (modulator - demodulator) • Terminal Emulation Software • Phone Line

  10. Combination Data/Graphics Systems • Information Retrieval Services • interactive access to (primarily) text • Source, Compuserve, Dow Jones • Teletext • one-way text and graphics; Prestel (UK) • stock market quotations • severe weather alert (continued)

  11. (continued) • Videotex • Prodigy, U.S. Videotel • two-way interactive retrievel of text and graphics • Audiographics • text, sound and graphics via computer workstation • electronic blackboard

  12. Teleconferencing • Audio • Video • includes audio

  13. Distance Education • Distance Learning • Distance Teaching

  14. Distance Education Delivery Systems • LIFT Model • Live, Interactive, Facilitated TV • Satellite Based • TI-IN (continued)

  15. (continued) • Modem Courses • Submit homework via Email • TCJC • Two-Way Audio/Video • video teleconference • UNT PDC, VTEL

  16. Computer Networks • Cluster • less than 30 machines • near to each other • LAN • local area network • less than 9 miles (continued)

  17. (continued) • MAN • metropolitan area network • less than 50 miles • WAN • wide area network • greater than 50 miles

  18. Internet • Network of networks • All use TCP/IP protocols (continued)

  19. (continued) • Support basic services • Email (SMTP) • Telnet • FTP • Supports numerous servers and clients • JOVE Unix system at UNT, Tenet in Austin • Listservs • Gopher, WWW, etc.

  20. Simple Curricular Enhancements via Email • NGS Kids Network • ATT Learning Network • TERC’s Global Lab • TCET’s Air/Water Project

  21. The End

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