Information will be uploaded from the servers using mobile phone or Wireless LAN links. The architecture will scale the behaviour of the service to accommodate the information transfer capacity of the data communication link. These investigate the provision of complex services on portable handheld devices, and demonstrate these as the user interface to services running on remote servers. The conversation system consists of four key components. The heart of the presentation functions is a text display area, or if used in conference with other terminals, a text telephone.
Users can type material directly into the text phone.
At the same time, however, a set of items of information in a variety of media are available to the user via the AAC presentation function. These can be selected from the AAC presentation function, and they are passed to the appropriate Presentation Function for presentation to the other conversation participants. This all takes place in a portable terminal. The media items used are reported to the Conversation Tracking Engine. This then checks to see if this is a new user generated text or annotation or if it has been selected from the AAC Presentation Function.