We describe a new tool that we are developing to help analyze the performance of emerging telecommunication systems. These emerging systems include ATM, broadband, intelligent and wireless networks, each of which will support a wide variety of services and media. Our tool is distinguished from previous tools by exploiting numerical transform inversion. In this paper we describe three modules in the tool. These modules provide algorithms for obtaining the exact analytic solutions to: (i) resource-sharing models, (ii) BMAP/G/1 queueing models and (iii) polling models. Since the tool is based on analytical methods instead of simulation, it is relatively fast. The tool has a windowbased menu-driven interface and provides both graphical and numerical output
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