The TABU project at Telenor Research and Development is working with speech-based user interfaces for advanced telephone services in Norwegian. For the purpose of demonstrating the concept, a real-time demonstrator was set up in Oslo for the Telenor Expo exhibition held in March 1995. The demonstrator was a multi\-modal dialog system with input from speech only and output through speech and window-based computer console. This paper presents the demonstrator and the technology used in it: the hardware, the speech synthesiser, the speech recogniser and the implementation of the dialogue.