Evaluation of Teleteaching Services over ATM and IP Networks

This paper presents the componentsof a synchronous teleteaching application, their underlying technology and their interaction with network services. In addition, it presents the architecture and designof a synchronous teleteaching application used over the public ATM network in Greece. This paper presents various teleteaching scenarios over an ATM network inforkV/U:jRV with the useof native ATM and IP over ATM. In each scenario we present the standards used, the logical components, the resource demands (network and equipment) and its special characteristics. For each scenario we give detailedinfledVR13 about the transmission andfVU; rates and the video delay. The main resultof our experiments is that broadband networks o#er many capabilitiesfa high quality teleteaching, and generally speaking, high quality telematic services

Network Based Information System To Support ODL Activities

This paper presents the architecture, the design and the services of a network based Information System that supports ODL (Open and Distance Learning) activities. The ODLIS (Open and Distance Learning Information System) offers synchronous and asynchronous distance learning and MIS (Management of Information System) services to support the educational procedure. The ODLIS is a web-based application, which runs over the Internet using real time protocols