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Publishing on the WWW Internet Communications. Introduction Range of methods Asynchronous or Synchronous Mobile Communications / Internet.

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Presentation on theme: "Publishing on the WWW Internet Communications. Introduction Range of methods Asynchronous or Synchronous Mobile Communications / Internet."— Presentation transcript:

1 Publishing on the WWW Internet Communications

2 Introduction Range of methods Asynchronous or Synchronous Mobile Communications / Internet

3 Real Time Communications Text e.g. Internet Relay Chat (IRC) Audio – Internet phone calls Videoconferencing Internet Intranet

4 Web Based Chat Use chat client or Java applet Real time Normally text based Can include sound and whiteboard

5 IRC – Internet Relay Chat Talk across the network with unlimited number of participants ‘live’ (real-time) One-to-one and one-to-many Connect to a server Connect to a channel (= discussion) Closed and public discussions

6 Video Conferencing Provides a direct video link between two or more participants Audio facilities Some systems are Internet based others use telecomms based networks

7 Video Conferencing: Uses Collaborative work Support of distance learning Remote surveillance Remote Interviews

8 Video Conferencing: Systems Desktop systems Portable sysems Room based sytems Videophones

9 Video Conferencing: Transmission Methods Internet CUSeeMe MS Netmeeting ATM ISDN

10 ATM Asynchronous Transfer Mode Very fast High quality Expensive!

11 ISDN Telecom network Commercial packages Cost effective Medium quality

12 Difficulties Quality Cost Range of standards How do you use it efficiently ?

13 Mobile Communications: What is it ? Laptop computer Mobile phone

14 Mobile Communications: The Technologies

15 Mobile Communications: Uses Health Care


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