Reynolds, Paul2016-10-302016-10-301984http://hdl.handle.net/10092/12869This report describes a Simula program designed to model the behaviour of X.25 Public Data Networks and produce statistics on various performance indices of the network. These include such indices as: - packet transfer times for each pair of nodes - time spent in each node - line utilisations - wait times for each line - buffer utilisations The user describes the network by suppling the model with information on each node and the lines that connect the nodes. This allows a large variety of X.25 network configurations to be studied.enAll Rights ReservedDiscussion / Working PapersFields of Research::40 - Engineering::4006 - Communications engineering::400602 - Data communications