The paper examines the real time speed of the conservative parallel simulation of a telecommunications network. Real time speed is defined as the ratio of the simulated time to the execution time. A generic simulation model of SS7 networks is executed under the conservative mechanism. A technique used to secure a stable lower bound on the speed of the simulator is introduced and analyzed. Using this technique simulation models ranging in size, from 16 to 64 nodes are executed on similarly sized and configured transputer networks: empirical data on the real time performance of the system are presented. The results confirm that the speed of the simulator is both stable and scalable: independent of work load density and size of the modelled network simulation of a given period of model activity is achieved within a predetermined period of real time.
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