The Evolution of Conferencing

Part of the BT Telecommunications Series book series (BTTS, volume 16)


Visual communication has a long history in the UK with the first public service established nearly 25 years ago, called ‘Confravision’, which linked London, Manchester, Birmingham, Bristol and Glasgow [1]. Soon after this, advances were made in video coding techniques in which it was possible to compress the video signal and transmit it over digital circuits. This work was ground breaking not just because 100 to 1 compression was achieved on the video pictures, but also because for the first time companies collaborated together to define the standards, thus recognizing that people ultimately needed to be able to communicate outside closed user groups [2].


Very Large Scale Integration Video Codec Central Processor Unit Application Sharing Integrate Service Digital Network 
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Copyright information

© Springer Science+Business Media Dordrecht 1999

Authors and Affiliations

  • I Parke

There are no affiliations available

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