Multipoint Interactive Audiovisual System


MIAS - 2684

Keywords audioconferencing, videoconferencing, standards, ISDN


Start Date: 01-FEB-89 / Duration: 30 months

[ contact / participants ]


Objectives and Approach

MIAS is a project in the field of multipoint audiovisual telecommunications. Until recently, the various telecommunications services have used different networks and equipment. Thus text might be sent by telex, and the spoken word by telephone. At the time of the project, there had been little attempt to combine these services together. Thanks to digital transmission and switching, we are now starting to see a variety of audiovisual services which combine sound communication, pictures and text in a number of ways. So that these terminals can interwork, however, it is important that a standard framework is provided which describes how the signals are combined and controlled. This framework is generally known as the conversational audiovisual service infrastructure.

The main objective of MIAS has been the further development of this signal and protocol infrastructure, building on the results already achieved in this area by the preceding project 1057-MIAC. The adoption of such an infrastructure as a European and world-wide standard is enabling the successful introduction of terminals and services based on these concepts.

Results

The project objectives have been achieved by developing the audiovisual infrastructure and incorporating it in a range of demonstration terminals and network facilities. The terminals were designed as single - user office workstations and provided simultaneous communication of speech, moving pictures and telematic information between users at two or more widely separated locations using the emerging ISDN. A number of demonstrator terminals were produced; the first demonstration showing terminals in point-to-point use.

An important feature of the project have been the development of the multipoint aspects. With many companies operating between diverse sites there has been an increasing user need for simultaneous interactive communications facilities between more than two locations. The final demonstration in 1991, comprised a complete multipoint multimedia system with visual and office system aids and was also capable of interworking with different types of terminal. It demonstrated the potential facilities which can be offered and showed the synergy which can be produced between office tasks, videoconferencing and videotelephony.

Exploitation

Exploitation of the project results is being achieved by the partners in three main ways:


CONTACT POINT

Mr William J. Clark
DSA 341
BT RESEARCH LABS
Martlesham Heath
UK - IPSWICH IP5 7RE
tel: + 44/ 473-642006
fax: + 44/ 473-643791
telex: 988811

Participants

BT RESEARCH LABS - UK - C
ALCATEL CIT - F - P
CNET - F - P
CSELT - I - P
PTT RNL - NL - P
TELEFONICA - E - P
AMPER SA - E - P


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MIAS - 2684, December 1993


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html version of synopsis by Nick Cook