A while back there were some questions about a simulator for a phone network. There is one on eBay: 5850959638 HTH, Gil (offline) A. G. (Gil) Carrick, Director The Museum at CSE University of Texas at Arlington Department of Computer Science & Engineering Box 19015, 471 S Cooper Street Arlington, TX 76019 817-272-3620 http://www.cse.uta.edu/TheMuseum@CSE/