The Intelligent Network (IN) architecture promises easy development and fast deployment of sophisticated communication services. In this paper, we present the results of our research in the area of Intelligent Multimedia Services. One of the main results has been the evaluation of novel multimedia services operating over different network platforms. One of the new services being designed is a Multimedia News-on-Demand application allowing users to browse through items of current affairs and select a specific article for viewing. This service is supplemented by an Intelligent Multimedia Gateway providing interconnectivity between the public service telephone network and the Internet. The study of this service has proved useful in gaining insight on the way novel intelligent multimedia services across network platforms will benefit from the use of IN technology. A performance evaluation of the service has also proved valuable to identify the major system and traffic parameters to consider when designing and deploying IN multimedia services across multiple networks.