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Publishing on the WWW Internet Communications
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Introduction Range of methods Asynchronous or Synchronous Mobile Communications / Internet
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Real Time Communications Text e.g. Internet Relay Chat (IRC) Audio – Internet phone calls Videoconferencing Internet Intranet
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Web Based Chat Use chat client or Java applet Real time Normally text based Can include sound and whiteboard
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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
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Video Conferencing Provides a direct video link between two or more participants Audio facilities Some systems are Internet based others use telecomms based networks
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Video Conferencing: Uses Collaborative work Support of distance learning Remote surveillance Remote Interviews
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Video Conferencing: Systems Desktop systems Portable sysems Room based sytems Videophones
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Video Conferencing: Transmission Methods Internet CUSeeMe MS Netmeeting ATM ISDN
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ATM Asynchronous Transfer Mode Very fast High quality Expensive!
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ISDN Telecom network Commercial packages Cost effective Medium quality
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Difficulties Quality Cost Range of standards How do you use it efficiently ?
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Mobile Communications: What is it ? Laptop computer Mobile phone
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Mobile Communications: The Technologies
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Mobile Communications: Uses Health Care
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